Knowledge Base

Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
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ON-BOARD DIAGNOSIS SYSTEM [START STOP UNIT]

Outline

  • The start stop unit has an on-board diagnostic function to facilitate system diagnosis.

Function

  • The on-board diagnostic function consists of the following functions:

    • A malfunction detection function, which detects overall malfunctions in the start stop unit-related parts.

    • A memory function, which stores detected DTCs.

    • A display function, which indicates malfunction locations and status via DTC output.

    • A PID/data monitoring function, which reads out specific input/output signals and verifies the input/output condition.

    • Simulation function for driving start stop unit-related parts

  • Using the Mazda Modular Diagnostic System (M-MDS), DTCs can be read out and deleted, and the PID/data monitoring function can be activated.

On-board Diagnostic Function
    Malfunction detection function

  • If a malfunction occurs, the start stop unit records the malfunction as a DTC. A recorded DTC can be read by the Mazda Modular Diagnostic System (M-MDS).

  • Malfunction diagnosis of the immobilizer system is automatically performed every time the engine is switched from off (ACC) to ON (START).

    Memory Function

  • Stores malfunctions detected by the malfunction detection function as DTCs in the start stop unit. The detected DTCs are not cleared even if the ignition is switched OFF (LOCK) or the negative battery cable is disconnected.

    Display Function

  • If any malfunction is detected, the KEY warning light (red), security warning light, or the push button start indicator light (amber) in the instrument cluster turns on or flashes to notify the driver of a system malfunction. In addition, DTCs are displayed by the number of times the security indicator light flashes.

    NOTE:

    • If two or more malfunctions are detected as the result of the malfunction diagnosis of the immobilizer system, the security indicator light only displays the flash pattern for the malfunction with the lowest number of detected DTCs.

  • Using the Mazda Modular Diagnostic System (M-MDS), DTCs can be read out and deleted, and the PID/data monitoring function can be activated.

  • If there is a malfunction in the immobilizer system, the security indicator light turns on, flashes, or turns off in the following patterns in the approx. 1 min after detecting a malfunction and before displaying the DTC:

    CAUTION:

    • If the security indicator light itself has a malfunction, it is possible that a DTC may not be indicated properly.

Security indicator light flash pattern

(before displaying DTC)

DTC

09, 11, 13, 15, 16

21

22, 23
DTC table
Immobilizer System×: Applicable—: Not applicable

DTC

KEY warning light (red)

Push button start indicator light (amber)

Description

Fail-safe

Drive cycle

Self test type*2

Memory function

Mazda Modular Diagnostic System (M-MDS) display*1

Security indicator light flash pattern

Start stop unit

PCM

U3000:96

P1260:00

09

On

Flash

Start stop unit malfunction

—

—

C

×

B10D9:87

P1260:00

11

—

Flash

Coil antenna (built into push button start) error

—

—

C

—

B13D3:05

P1260:00

13

—

—

Remote transmitter program error

—

—

C

—

B13D3:94

P1260:00

13

—

—

Communication error with remote transmitter

—

—

C

—

B13D3:51

P1260:00

15

—

Flash

Unregistered remote transmitter is detected

—

—

C

—

U0100:87

P1260:00

16

—

—

Communication error with PCM (no response or data mis-match)

—

—

C

—

B13D4:00

P1260:00

21

On

—

Insufficient remote transmitter programming number

—

—

C

—

B10DA:51

P1260:00

22

—

—

Communication error with PCM (data received failure)

—

—

C

—

B10DA:62

P1260:00

23

—

—

Communication error with PCM (code mis-matched)

—

—

C

—
*1
The letters at the beginning of each DTC are only displayed when using the Mazda Modular Diagnostic System (M-MDS), and refer to the following: B= Body system, P= Powertrain system, U= Network communication system.
*2
C: CMDTC self test, D: ODDTC self test
Advanced Keyless Entry System (With Advanced Keyless Entry System)×: Applicable—: Not applicable

DTC No.

KEY warning light (red)

Push button start indicator light (amber)

Description

Fail-safe

Drive cycle

Self test type*1

Memory function

B10C6:1F

On

—

Keyless antenna (exterior, rear) circuit malfunction

×

—

C, D

×

B10C7:1F

On

—

Keyless antenna (interior, rear) circuit malfunction

×

—

C, D

×

B10C8:1F

On

—

Keyless antenna (interior, center) circuit malfunction

×

—

C, D

×

B10C9:1F

On

—

Keyless antenna (interior, front) circuit malfunction

×

—

C, D

×

B10D1:23

On

—

Request switch (LF) circuit malfunction

—

—

C

×

B10D3:23

On

—

Request switch (RF) circuit malfunction

—

—

C

×

B11FD:1F

On

—

Keyless antenna (exterior, LF) circuit malfunction

×

—

C, D

×

B1210:1F

On

—

Keyless antenna (exterior, RF) circuit malfunction

×

—

C, D

×

B13C3:04

On

—

LF control unit internal malfunction

×

—

C

×

B13C3:09

On

—

LF control unit malfunction

×

—

C

×

B13C3:16

On

—

LF control unit power supply voltage low input

×

—

C

×

B13C3:29

On

—

Communication error between start stop unit and LF control unit

×

—

C

×
*1
C: CMDTC self test, D: ODDTC self test
Start Stop Unit×: Applicable—: Not applicable

DTC No.

KEY warning light (red)

Push button start indicator light (amber)

Description

Fail-safe

Drive cycle

Self test type*1

Memory function

B108B:23

—

Flash

Push button start switch 1 circuit malfunction

×

—

C

×

B108B:24

—

Flash

Push button start switch 1 circuit malfunction

—

—

C

×

B108C:23

—

Flash

Push button start switch 2 circuit malfunction

×

—

C

×

B108C:24

—

Flash

Push button start switch 2 circuit malfunction

—

—

C

×

B10AC:13*2

—

—

Cruise control switch circuit malfunction

—

—

C

×

B10AC:23*2

—

—

Cruise control switch circuit malfunction

—

—

C

×

B10C9:1F*3

On

—

Keyless antenna (interior, front) circuit malfunction

—

—

C, D

×

B10E7:11

—

Flash

IG1 relay circuit malfunction

—

—

C

×

B10E7:12

—

Flash

IG1 relay circuit malfunction

—

—

C

×

B10E7:16

—

Flash

IG1 relay circuit malfunction

—

—

C

×

B10E7:17

—

Flash

IG1 relay circuit malfunction

—

—

C

×

B124C:56

—

—

Turn switch internal circuit malfunction

—

—

C

×

B13D3:16

—

—

Low remote transmitter battery voltage

—

—

C

×

B13D3:4A

On

—

Remote transmitter matching malfunction

—

—

C

×

B13D3:97

—

—

Remote transmitter registration work not completed

—

—

C

×

B1C53:13

—

—

Wiper switch circuit malfunction

—

—

C

×

C0040:23*4

—

Flash

Brake switch (No.1 signal) circuit malfunction

×

—

C

×

C0040:24*4

—

Flash

Brake switch (No.1 signal) circuit malfunction

×

—

C

×

C0051:2F*5

—

—

Steering angle sensor signal error

—

—

C

×

C0051:95*5

—

—

Steering angle sensor assembly malfunction

—

—

C

×

C0052:14*5

—

—

Steering angle sensor A signal circuit malfunction

—

—

C

×

C0052:2F*5

—

—

Steering angle sensor A signal malfunction

—

—

C

×

C0053:14*5

—

—

Steering angle sensor B signal circuit malfunction

—

—

C

×

C0053:2F*5

—

—

Steering angle sensor B signal malfunction

—

—

C

×

C2003:13*6

—

—

Open circuit in steering switch

—

—

C

×

P0615:11

—

Flash

Starter relay circuit malfunction

—

—

C

×

P0615:12

—

Flash

Starter relay circuit malfunction

×

—

C

×

P0615:13

—

Flash

Starter relay circuit malfunction

—

—

C

×

P0615:16

—

Flash

Starter relay circuit malfunction

—

—

C

×

P0616:23

—

—

Circuit malfunction on downstream side of starter relay

—

—

C

×

P0616:24

—

—

Circuit malfunction on downstream side of starter relay

—

—

C

×

P0616:29

—

—

Downstream side of starter relay signal malfunction

—

—

C

×

P081C:23*4

—

Flash

NOT P position switch circuit malfunction

×

—

C

×

P081C:24*4

—

Flash

NOT P position switch circuit malfunction

×

—

C

×

P081D:29*7

—

Flash

Neutral switch error signal received

×

—

C

×

P081D:2F*7

—

Flash

Neutral switch signal mismatch

×

—

C

×

P0830:23*7

—

Flash

Clutch pedal position switch circuit malfunction

×

—

C

×

P0850:23*4

—

Flash

Transmission range switch circuit malfunction

×

—

C

×

P0850:24*4

—

Flash

Transmission range switch circuit malfunction

×

—

C

×

P0930:71*4

—

—

Shift-lock solenoid circuit malfunction

×

—

C

×

P1708:24*7

—

Flash

Starter interlock switch circuit malfunction

×

—

C

×

P1708:29*7

—

Flash

Starter interlock switch circuit or clutch pedal position switch circuit malfunction

×

—

C

×

P1794:16

—

Flash

Start stop unit power supply voltage (terminal 2W) low input

—

—

C

×

U0001:88

On

Flash

Module communication error (HS-CAN)

×

—

C

×

U0028:87

On

—

Communication error with BCM

×

—

C

×

U0100:00

On

Flash

Communication error with PCM

×

—

C

×

U0101:00*4

—

Flash

Communication error with TCM

×

—

C

×

U0121:00

On

Flash

Communication error with DSC HU/CM

×

—

C

×

U0121:87

On

Flash

Communication error with DSC HU/CM

×

—

C

×

U0131:00

—

—

Communication error with electric power steering (EPS) control module

×

—

C

×

U0140:00

—

—

Communication error with BCM

×

—

C

×

U0146:00

On

Flash

Communication error with BCM

×

—

C

×

U0151:00

On

Flash

Communication error with SAS control module

×

—

C

×

U0155:00

On

Flash

Communication error with instrument cluster

×

—

C

×

U0447:86

On

Flash

Error signal received from BCM

×

—

C

×

U201F:11

On

—

Keyless receiver circuit malfunction

—

—

C

×

U201F:12

On

—

Keyless receiver circuit malfunction

—

—

C

×

U2100:00

On

—

Start stop unit configuration not completed

×

—

C

×

U2300:00

—

—

Configuration data not received from instrument cluster

×

—

C

×

U3000:01*5

—

—

Start stop unit internal malfunction

—

—

C

×

U3000:49

On

Flash

Start stop unit internal malfunction

×

—

C

×

U3000:96

On

Flash

Start stop unit malfunction

—

—

C

×

U3003:16

On

—

Start stop unit power supply voltage (terminal 1A) low input

×

—

C

×

U3004:11

—

Flash

ACC relay circuit malfunction

—

—

C

×

U3004:12

—

Flash

ACC relay circuit malfunction

—

—

C

×

U3004:16

—

—

ACC relay circuit malfunction

—

—

C

×

U3004:17

—

—

ACC relay circuit malfunction

—

—

C

×
*1
C: CMDTC self test, D: ODDTC self test
*2
With cruise control system
*3
With keyless entry system
*4
AT
*5
With adaptive front lighting system (AFS) control module
*6
With steering switch
*7
MT

Snapshot Data

NOTE:

  • The start stop unit stores the following two types of snapshot data (vehicle information) when a DTC is detected and displays them in the Mazda Modular Diagnostic System (M-MDS).

    • Vehicle information detected by start stop unit

    • Vehicle information detected by instrument cluster and received by start stop unit via CAN communication

  • The data for all DTCs currently detected is stored.

—: Not applicable

Snapshot data item

Unit

Data contents

Data read/use method

Corresponding data monitor items

AAT

°C

°F

Ambient temperature

—

—

APP_STATUS

Accelerator Pedal Off/Under20%/Over20%/FAIL

Accelerator pedal position status

—

—

CFG_STATUS

Config Complete/Not Configured/Config Error

Instrument cluster configuration status

—

—

ECT_STATUS

Under 0 degrees C/0 - Under 80 degrees C/Over 80 degrees C/FAIL

Engine coolant temperature status

—

—

IC_VPWR

V

Instrument cluster power supply voltage

  • The start stop unit constantly receives the power supply voltage value of the instrument cluster sent via CAN communication from the instrument cluster.

  • If a DTC is detected, the start stop unit records the power supply voltage of the instrument cluster when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).

VPWR*1

IG-ON_TIMER

hh:mm:ss*2

Elapsed time since ignition was switched ON (engine off or on)

NOTE:

  • The instrument cluster records the elapsed time since the ignition was switched ON (engine off or on).

  • The start stop unit constantly receives the elapsed time since the ignition was switched ON (engine off or on) sent via CAN communication from the instrument cluster.

  • If a DTC is detected, the start stop unit records the elapsed time since the ignition was switched ON (engine off or on) when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).

—

PWR_MODE_KEY

Key Out/Key Recently Out (Position 0)/Accessory (Position 1)/Post Ignition (Position 2)/Ignition On (Position 2)/Running (Position 2)/Running - Starting In Progress (Position 2)

  • Key Out: Ignition switched off

  • Key Recently Out (Position 0): Elapsed time within 3 s since ignition was switched off

  • Accessory (Position 1): Ignition is switched to ACC

  • Post Ignition (Position 2): Elapsed time within 3 s since ignition was switched ON (engine off or on)

  • Ignition On (Position 2): Ignition switched ON (engine off)

  • Running (Position 2): Ignition switched ON (engine on)

  • Running - Starting: Cranking condition

  • The start stop unit constantly receives the ignition switch status sent via CAN communication from the instrument cluster.

  • If a DTC is detected, the start stop unit records the ignition switch status when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).

—

RPM_STATUS

Engine Stop/Under1500rpm/Over1500rpm/FAIL

Engine speed status

  • The start stop unit constantly receives the engine speed sent via CAN communication from the instrument cluster.

  • If a DTC is detected, the start stop unit records the engine speed when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).

TACHOMTR*1

SHIFT_STATUS

P/N/D/R/FAIL

Selector lever position status

  • The start stop unit constantly receives the selector lever position sent via CAN communication from the instrument cluster.

  • If a DTC is detected, the start stop unit records the selector lever position when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).

—

TOTAL_DIST

km

Miles

Accumulated total traveled distance from completion of vehicle until start stop unit detects DTC (Odometer value in instrument cluster)

The total traveled distance from which the start stop unit detects DTCs to the present can be calculated by performing the following procedure.

  • Verify the odometer value in the instrument cluster.

  • Verify the snapshot data item TOTAL_DIST.

  • Subtract 2 from 1.

—

TOTAL_TIME

hh:mm:ss*2

Accumulated total elapsed time since vehicle completion until start stop unit detects a DTC

NOTE:

  • When the ROOM fuse is removed, and the ignition is switched off, the time is not included in the elapsed time.

The elapsed time from which the start stop unit detects DTCs to the present can be calculated by performing the following procedure.

  • Verify the instrument cluster PID item TOTAL_TIME.

  • Verify the snapshot data item TOTAL_TIME.

  • Subtract 2 from 1.

TOTAL_TIME*1

TRNS_NUM_L

Initial/No.1/No.2/No.3/No.4/No.5/No.6

Registration number of the remote transmitter

If the start stop unit detects DTC B13D3:16 (Low remote transmitter battery voltage), inspect the remote transmitter in which the malfunction is occurring using the following procedure to display the registration number of the remote transmitter that was operated.

  • Verify the registration number of the remote transmitter in the snapshot data.

  • Display the start stop unit PID item RF_TRNS_NUM and inspect the battery voltage of the remote transmitter having the same registration number as the recorded remote transmitter registration number.

—

VPWR

V

Start stop unit power supply voltage

—

VPWR_B2

VPWR_B1

V

Start stop unit power supply voltage (ROOM fuse)

—

VPWR_B1

VSPD_STATUS

Stop/0-10km/h/Over10km/h/FAIL

Vehicle speed status

  • The start stop unit constantly receives the vehicle speed sent via CAN communication from the instrument cluster.

  • If a DTC is detected, the start stop unit records the vehicle speed when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).

SPEEDOMTR*1
*1
Instrument cluster PID (See ON-BOARD DIAGNOSTIC [INSTRUMENT CLUSTER].)
*2
The seconds may be indicated after the decimal point.

DTC 7-digit code definition

  • When related systems or components have failed, the CM stores the DTC of the malfunctioning part in the CM memory, and allows for the retrieval of the store data using scanning tool when necessary. The DTCs are indicated using seven digits. Each digit indicates the following.

Status byte for DTC

  • The two digits (two digits after hyphen (-)) after the seven-digit DTC.

  • A code which indicates the pending code, current/past malfunction status, or warning illumination status.

  • Can be read by performing a CMDTC self-test using the Mazda Modular Diagnostic System (M-MDS).

  • For details on the status byte, refer to the explanation on the Mazda Modular Diagnostic System (M-MDS) when reading the DTC.

Detection condition for the applicable DTC

Immobilizer System

DTC No.

Description

Detection condition

B10D9:87

Coil antenna (built into push button start) error

  • Start stop unit detected a malfunction in the coil antenna, and remote transmitter communication is not possible.

B10DA:51

Communication error with PCM (data received failure)

  • Start stop unit detects a communication error (data received failure) with PCM.

B10DA:62

Communication error with PCM (code mis-matched)

  • Start stop unit detects a communication error (code mis-matched) with the PCM.

B13D3:05

Remote transmitter program error

  • Start stop unit detects a remote transmitter program error.

B13D3:51

Unregistered remote transmitter is detected

  • Start stop unit detects that the remote transmitter has not been programmed.

B13D3:94

Communication error with remote transmitter

  • Start stop unit could not detect the remote transmitter communication or communication error was detected.

B13D4:00

Insufficient remote transmitter programming number

  • Start stop unit detects that the number of programmed remote transmitters is less than 2.

U0100:87

Communication error with PCM (no response or data mis-match)

  • Start stop unit detects a communication error (no response or immobilizer system cancel not possible) with the PCM.

U3000:96

Start stop unit malfunction

  • Start stop unit malfunction detected.
Advanced Keyless Entry System (With Advanced Keyless Entry System)

DTC No.

Description

Detection condition

B10C6:1F

Keyless antenna (exterior, rear) circuit malfunction

  • Start stop unit detects an open circuit or short to ground in the keyless antenna (exterior, rear) circuit with the ignition switched off.

B10C7:1F

Keyless antenna (interior, rear) circuit malfunction

  • Start stop unit detects an open circuit or short to ground in the keyless antenna (interior, rear) circuit with the ignition switched off.

B10C8:1F

Keyless antenna (interior, center) circuit malfunction

  • Start stop unit detects an open circuit or short to ground in the keyless antenna (interior, center) circuit with the ignition switched off.

B10C9:1F

Keyless antenna (interior, front) circuit malfunction

  • Start stop unit detects an open circuit or short to ground in the keyless antenna (interior, front) circuit with the ignition switched off.

B10D1:23

Request switch (LF) circuit malfunction

  • Start stop unit detected any of the following conditions at a vehicle speed of 5 km/h {3 mph} or more.

    • The request switch (LF) is continuously ON for 2 min or more.

    • The request switch (LF) was ON 7 times.

B10D3:23

Request switch (RF) circuit malfunction

  • Start stop unit detected any of the following conditions at a vehicle speed of 5 km/h {3 mph} or more.

    • The request switch (RF) is continuously ON for 2 min or more.

    • The request switch (RF) was ON 7 times.

B11FD:1F

Keyless antenna (exterior, LF) circuit malfunction

  • Start stop unit detects an open circuit or short to ground in the keyless antenna (exterior, LF) circuit with the ignition switched off.

B1210:1F

Keyless antenna (exterior, RF) circuit malfunction

  • Start stop unit detects an open circuit or short to ground in the keyless antenna (exterior, RF) circuit with the ignition switched off.

B13C3:04

LF control unit internal malfunction

  • Start stop unit detects the LF control unit internal malfunction.

B13C3:09

LF control unit malfunction

  • When any of the following conditions is met:

    • Start stop unit detects that the LF state signal of the LF control unit is low for 5 s or more.

    • With the communication between the start stop unit and LF control unit being performed normally, there is no response from the LF control unit even though there is the signal transmission request from the start stop unit to the LF control unit, and the LF state signal becomes low.

B13C3:16

LF control unit power supply voltage low input

  • Start stop unit power supply circuit voltage of 8.5 V or more or less than 16.5 V and LF control unit power supply circuit voltage of 5 V or more or less than 8.5 V are detected for 5 s or more.

B13C3:29

Communication error between start stop unit and LF control unit

  • Start stop unit detects the communication error with the LF control unit 10 times.
Start Stop Unit

DTC No.

Description

Detection condition

B108B:23

Push button start switch 1 circuit malfunction

  • Start stop unit detects that the push button start switch 1 is stuck on for 120 s or more.

B108B:24

Push button start switch 1 circuit malfunction

  • Start stop unit detects that the push button start switch 1 is kept in an off condition 5 times or more even though the push button start switch 2 is on.

B108C:23

Push button start switch 2 circuit malfunction

  • Start stop unit detects the push button start switch 2 is stuck on for 120 s or more.

B108C:24

Push button start switch 2 circuit malfunction

  • Start stop unit detects that the push button start switch 2 is kept in an off condition 5 times or more even though the push button start switch 1 is on.

B10AC:13

Cruise control switch circuit malfunction

  • Start stop unit detected an open circuit in the cruise control switch circuit for 5 s or more with the ignition switched ON (engine off or on).

B10AC:23

Cruise control switch circuit malfunction

  • Start stop unit detects any cruise control switch stuck on for 120 s or more with the ignition switched ON (engine off or on).

B10C9:1F

Keyless antenna (interior, front) circuit malfunction

  • Start stop unit detects an open circuit or short to ground in the keyless antenna (interior, front) with the ignition switched off.

B10E7:11

IG1 relay circuit malfunction

  • Start stop unit detects the voltage from the IG1 relay output monitor as less than 2.5 V for 0.5 s or more while the engine is not being cranked with the ignition switched ON (engine off or on).

B10E7:12

IG1 relay circuit malfunction

  • Start stop unit detects the IG1 relay output monitor voltage of 2.5 V or more for 0.5 s or more with the ignition switched off or ACC.

B10E7:16

IG1 relay circuit malfunction

  • Start stop unit detects the IG1 monitor voltage of less than 2.5 V for 1 s or more while the engine is not being cranked with the ignition switched ON (engine off or on).

B10E7:17

IG1 relay circuit malfunction

  • Start stop unit detects the IG1 monitor voltage of 2.5 V or more for 1 s or more with the ignition switched off or ACC.

B124C:56

Turn switch internal circuit malfunction

  • Start stop unit detects that the turn switch LH and RH are turned on simultaneously for 5 s or more.

B13D3:16

Low remote transmitter battery voltage

  • Start stop unit detects the low remote transmitter battery voltage in any of the programmed transmitters 3 times continuously.

B13D3:4A

Remote transmitter matching malfunction

  • Start stop unit detects a remote transmitter different from the one equipped to the vehicle.

B13D3:97

Remote transmitter registration work not completed

  • Start stop unit detects that the registration of a remote transmitter has not been completed.

B1C53:13

Wiper switch circuit malfunction

  • Start stop unit detects an open circuit, short to ground, or short to power supply in the wiper switch circuit for 5 s or more with the ignition switched ON (engine off or on).

C0040:23

Brake switch (No.1 signal) circuit malfunction

  • The start stop unit detected the following condition 5 times continuously with the ignition switched ON (engine off or on).

    • The brake switch (No.1 signal) is OFF for a continuous 3 s or more even though the brake switch (No.2 signal) changes.

C0040:24

Brake switch (No.1 signal) circuit malfunction

  • The start stop unit detected the following condition 5 times continuously with the ignition switched ON (engine off or on).

    • The brake switch (No.1 signal) is ON for a continuous 3 s or more even though the brake switch (No.2 signal) changes.

C0051:2F

Steering angle sensor signal error

  • Start stop unit detects the steering angle sensor signal error for 5 s or more with the ignition switched ON (engine off or on).

C0051:95

Steering angle sensor assembly malfunction

  • Start stop unit receives the following signals with the ignition switched ON (engine off or on).

    • Steering angle sensor assembly malfunction from electric power steering (EPS) control module for 1 s or more

    • Improper assembly of steering angle sensor at 360°

    • Steering wheel angle of 720° or more for 0.048 s or more

C0052:14

Steering angle sensor A signal circuit malfunction

  • Start stop unit detects an open circuit or short to ground in the steering angle sensor A signal circuit.

C0052:2F

Steering angle sensor A signal malfunction

  • When any of the following conditions is met:

    • Start stop unit detected the sudden change in steering angle sensor A signal.

    • Start stop unit detected that the steering angle sensor A signal is stuck with the ignition switched ON (engine off or on).

C0053:14

Steering angle sensor B signal circuit malfunction

  • Start stop unit detects an open circuit or short to ground in steering angle sensor B signal circuit.

C0053:2F

Steering angle sensor B signal malfunction

  • When any of the following conditions is met:

    • Start stop unit detects the sudden change in steering angle sensor B signal.

    • Start stop unit detects that the steering angle sensor B signal is stuck with the ignition switched ON (engine off or on).

C2003:13

Open circuit in steering switch

  • Start stop unit detects an open circuit in the steering switch circuit for 5 s or more with the ignition switched ON (engine off or on).

P0615:11

Starter relay circuit malfunction

  • Start stop unit detects that the starter relay monitor circuit voltage of less than 2.2 V for 0.2 s or more with the ignition switched off.

P0615:12

Starter relay circuit malfunction

  • Start stop unit detects that the starter relay circuit voltage of specification or more for 0.1 s or more with the ignition switched off.

P0615:13

Starter relay circuit malfunction

  • Start stop unit detects an open circuit in the starter relay circuit for 0.075 s or more with the ignition switched off.

P0615:16

Starter relay circuit malfunction

  • Start stop unit detects that the starter relay circuit voltage that is less than the specification for 0.05 s or more during cranking.

P0616:23

Circuit malfunction on downstream side of starter relay

  • Start stop unit detects a short to ground in the starter relay downstream circuit continuously for 0.5 s or more for a continuous 5 times.

P0616:24

Circuit malfunction on downstream side of starter relay

  • Start stop unit detects an open circuit in the starter relay downstream circuit continuously for 0.5 s or more for a continuous 5 times.

P0616:29

Downstream side of starter relay signal malfunction

  • Start stop unit detects that the following signals are unmatched for 0.5 s or more for a continuous 5 times.

    • Transmission range switch (AT)/starter interlock switch (MT) condition

    • Starter relay downstream circuit condition

    • PCM control result

    • CAN signal condition output from PCM

P081C:23

NOT P position switch circuit malfunction

  • Start stop unit detects that the NOT P position switch is stuck on for 5 s or more for a continuous 5 times with the ignition switched ON (engine off or on).

P081C:24

NOT P position switch circuit malfunction

  • Start stop unit detects that the NOT P position switch is stuck off for 5 s or more for a continuous 5 times with the ignition switched ON (engine off or on).

P081D:29

Neutral switch error signal received

  • Start stop unit receives the neutral switch signal error signal from the PCM for 1 min or more with the ignition switched ON (engine off or on).

P081D:2F

Neutral switch signal mismatch

  • Start stop unit detects that the vehicle speed changes from 0 km/h {0 mph} to 10 km/h {6.2 mph} for a continuous 5 times or more even though the neutral signal from the PCM is being received with the ignition switched ON (engine off or on).

P0830:23

Clutch pedal position switch circuit malfunction

  • Start stop unit detects that the clutch pedal position switch is stuck on for 10 min or more.

P0850:23

Transmission range switch circuit malfunction

  • The start stop unit detected the following condition 5 times continuously with the ignition switched ON (engine off or on).

    • Transmission range switch is stuck on for a continuous 1 s or more even though the TCM CAN signal is in a position other than the P and N position.

P0850:24

Transmission range switch circuit malfunction

  • The start stop unit detected the following condition 5 times continuously with the ignition switched ON (engine off or on).

    • Transmission range switch is stuck off for a continuous 1 s or more even though the TCM CAN signal is in a position the P or N position.

P0930:71

Shift-lock solenoid circuit malfunction

  • The start stop unit continues to operate the shift-lock solenoid for 30 min or more with the ignition switched ON (engine off or on).

P1708:24

Starter interlock switch circuit malfunction

  • Start stop unit detects an open circuit in the starter interlock switch circuit for 0.5 s or more for a continuous 5 times with the ignition switched ON (engine off or on).

P1708:29

Starter interlock switch circuit or clutch pedal position switch circuit malfunction

  • Start stop unit detects that the starter interlock switch circuit is stuck on for 0.2 s or more, or the clutch pedal position switch circuit is stuck off for 0.25 s or more.

P1794:16

Start stop unit power supply voltage (terminal 2W) low input

  • Start stop unit power supply circuit voltage (terminal 2W) of less than 6.5 V is detected for 5 s or more.

U0001:88

Module communication error (HS-CAN)

  • Start stop unit detects the CAN bus communication line (HS-CAN) malfunction 10 times continuously with the ignition switched ON (engine off or on).

U0028:87

Communication error with BCM

  • Start stop unit detects the communication error with BCM 10 times continuously.

U0100:00

Communication error with PCM

  • Start stop unit could not receive the CAN signal from the PCM for 1 s or more with the ignition switched ON (engine off or on).

U0101:00

Communication error with TCM

  • Start stop unit could not receive the CAN signal from the TCM for 1 s or more with the ignition switched ON (engine off or on).

U0121:00

Communication error with DSC HU/CM

  • Start stop unit could not receive the CAN signal from the DSC HU/CM for 1 s or more with the ignition switched ON (engine off or on).

U0121:87

Communication error with DSC HU/CM

  • Start stop unit could not receive the CAN signal from the DSC HU/CM for 10 s or more with the ignition switched off.

U0131:00

Communication error with electric power steering (EPS) control module

  • Start stop unit could not receive the CAN signal from the electric power steering (EPS) control module for 1.2 s or more with the ignition switched ON (engine off or on).

U0140:00

Communication error with BCM

  • Start stop unit could not receive the CAN signal from the BCM for 5 s or more with the ignition switched ON (engine off or on).

U0146:00

Communication error with BCM

  • Start stop unit could not receive the CAN signal from the BCM for 5 s or more with the ignition switched ON (engine off or on).

U0151:00

Communication error with SAS control module

  • Start stop unit could not receive the CAN signal from the SAS control module for 1 s or more with the ignition switched ON (engine off or on).

U0155:00

Communication error with instrument cluster

  • Start stop unit could not receive the CAN signal from the instrument cluster for 5 s or more with the ignition switched ON (engine off or on).

U0447:86

Error signal received from BCM

  • Start stop unit receives the error signals from the BCM for 5 s or more with the ignition switched ON (engine off or on).

U201F:11

Keyless receiver circuit malfunction

  • Start stop unit detects that the keyless receiver circuit voltage of less than 3.4 V for 0.5 s or more.

U201F:12

Keyless receiver circuit malfunction

  • Start stop unit detects that the keyless receiver circuit voltage of 6.2 V or more for 0.5 s or more.

U2100:00

Start stop unit configuration not completed

  • Start stop unit configuration not completed.

U2300:00

Configuration data not received from instrument cluster

  • Start stop unit cannot receive the configuration data from the instrument cluster for 1 s or more with the ignition switched ON (engine off or on).

U3000:01

Start stop unit internal malfunction

  • Start stop unit detects the internal malfunction.

U3000:49

Start stop unit internal malfunction

  • Start stop unit detects the internal malfunction.

U3000:96

Start stop unit malfunction

  • Start stop unit malfunction detected.

U3003:16

Start stop unit power supply voltage (terminal 1A) low input

  • Start stop unit power supply circuit voltage (terminal 1A) of 5V or more, less than 8.5 V is detected for 5 s or more.

U3004:11

ACC relay circuit malfunction

  • Start stop unit detects that the ACC relay output monitor voltage of less than specification for 0.05 s or more with the ignition switched to ACC or ON (engine off or on).

U3004:12

ACC relay circuit malfunction

  • Start stop unit detects that the ACC relay output monitor voltage of 2.5 V or more for 0.5 s or more with the ignition switched off.

U3004:16

ACC relay circuit malfunction

  • Start stop unit detects that the ACC monitor voltage of less than 2.5 V for 1 s or more with the ignition switched to ACC or ON (engine off or on).

U3004:17

ACC relay circuit malfunction

  • Start stop unit detects that the ACC monitor voltage of 2.5 V or more for 5 s or more with the ignition switched off.

Data Monitor Function

  • With the PID/data monitor function, input/output signal monitor items set in the start stop unit can be selected and read out in real-time.

  • The items which can be selected are as follows.

—: Not applicable

PID

Unit/Operation

Data contents

Data read/use method

Module control terminal

BRAKE_SW1*1

Off/On

Brake switch (No.1 signal) signal input status

  • Off: Brake pedal is not depressed.

  • On: Brake pedal is depressed.

—

1C (Brake switch)

CLUT_CUT_SW*2

Off/On

Starter interlock switch input status

  • Off: Starter interlock switch is off.

  • On: Starter interlock switch is on.

—

1F (Starter interlock switch)

CLUTCH_SW*2

Off/On

Clutch switch input status

  • Off: Clutch pedal position switch is off.

  • On: Clutch pedal position switch is on.

—

2E (Clutch pedal position switch)

COMM_ST_TSP

Off/On

Displays operation condition of the immobilizer system key code read function

  • Off: Key code read function not performed

  • On: Code read function is performed and coil antenna reads key code from remote transmitter transponder.

Key code reading function of immobilizer system is performed and when a brake switch, clutch switch, or push button start signal is input, the coil antenna reads the key code from the transponder of the remote transmitter, and displays On while the key code is being sent to the start stop unit.

  • 1AC (PATS+)

  • 1AE (PATS-)

CRU_CON_SW*3

Not_Pressed/On/Off/MODE/On/Off/OFF_CANCEL/Cancel/Resume/Fault/Resume_Plus/Set (+)/Set (-)/Distance (+)/Distance (-)

Cruise control switch operation condition

  • Not_Pressed: Each switch of cruise control switch is not pressed.

  • On: Cruise ON switch is pressed.

  • Off: —

  • MODE: —

  • Off/On: —

  • OFF_CANCEL: OFF / CANCEL switch is pressed.

  • Cancel: —

  • Resume: —

  • Fault: Cruise control switch has a malfunction.

  • Resume_Plus: RESUME / + switch is pressed.

  • Set (+): —

  • Set (-): SET / - switch is pressed.

  • Distance (+): —

  • Distance (-): —

—

1Y (Cruise control switch signal)

ES_UL_SW

Not_Unlock/Unlock

Steering lock unlock switch condition

  • Not_Unlock: Steering lock unlock switch is off.

  • Unlock: Steering lock unlock switch is on.

—

—

ES_UL_SW_M

Not_Unlock/Unlock

Memory value of steering lock unlock switch

  • Not_Unlock: Memory value of steering lock unlock switch is not unlocked.

  • Unlock: Memory value of steering lock unlock switch is unlocked.

—

—

ES_ULL_SW

Off/On

Steering lock unlock/lock switch condition

  • Off: Steering lock unlock/lock switch is off.

  • On: Steering lock unlock/lock switch is on.

—

—

ES_ULL_SW_M

Off/On

Memory value of steering lock unlock/lock switch

  • Off: Memory value of steering lock unlock/lock switch is off.

  • On: Memory value of steering lock unlock/lock switch is on.

—

—

F_FOG_SW

Off/On

NOTE:

Displays in the M-MDS but it does not operate.

H/L_SW_HI

Off/On

Displays dimmer switch position of the light switch that is being input to the start stop unit

  • Off: Dimmer switch of light switch is not in HI position

  • On: Dimmer switch of light switch is in HI position

Verify if the monitor value switches when the dimmer switch of the light switch is switched between LO and HI positions. If the dimmer switch operation and monitor values do not match, inspect the light switch.

—

H/L_SW_LOW

Off/On

Displays dimmer switch position of the light switch that is being input to the start stop unit

  • Off: Dimmer switch of light switch is not in LO position

  • On: Dimmer switch of light switch is in LO position

Verify if the monitor value switches when the dimmer switch of the light switch is switched between LO and HI positions. If the dimmer switch operation and monitor values do not match, inspect the light switch.

—

H/L_SW_OFF

Off/On

Headlight light switch (OFF) operation condition

  • Off: Light switch is not in OFF position.

  • On: Light switch is in OFF position.

—

—

H/L_SW_PASS

Off/On

Headlight switch (PASS) operation condition

  • Off: Light switch is not in passing position.

  • On: Light switch is in passing position.

—

—

H/L_SW_TNS

Off/On

Headlight switch (TNS (parking lights)) operation condition

  • Off: Light switch is not in TNS (parking lights) position.

  • On: Light switch is in TNS (parking lights) position.

—

—

HAZARD_SW

Off/On

Displays condition of hazard warning switch input to start stop unit

  • Off: Hazard warning switch is off.

  • On: Hazard warning switch is on.

—

1G (Hazard warning switch signal)

IG_POSITION

OFF/ACC/ON/CRANK

Displays power status controlled by the start stop unit

  • OFF: Start stop unit controls ignition switch off (lock)

  • ACC: Start stop unit controls ignition switch ACC

  • ON: Start stop unit controls ignition switch ON (engine off)

  • CRANK: Start stop unit controls cranking at ignition switch ON

  • When the push button start is operated, the start stop unit performs power source switching and displays the PID value of the power source position in which control was performed.

  • If the push button start operation and PID value do not match, and a power source status of another unit differs from the PID value, inspect the input power source of the other unit because the power source control of the start stop unit is normal.

—

INFO_SW

Off/SW1_On/SW2_On/SW3_On/Unknown/Invalid

Steering switch operation condition

  • Off: Steering switch INFO switch is not pressed.

  • SW1_On: —

  • SW2_On: —

  • SW3_On: INFO switch is pressed.

  • Unknown: Steering switch INFO switch signal is not determined.

  • Invalid: Steering switch malfunction is received.

Displays INFO switch position of steering switch input to start stop unit. Steering switch signal is input to start stop unit via clock spring.

  • 1AA (Steering switch signal)

  • 1AB (Steering switch ground)

INHIBIT_SW*1

Off/On

Transmission range switch input status

  • Off: Selector lever is not in P and N positions.

  • On: Selector lever is in P or N position.

—

1F (Selector lever position switch)

LG/T_LK_SW

Off/On

NOTE:

Displays in the M-MDS but it does not operate.

LG/T_UNL_SW

Off/On

Trunk lid opener switch operation condition

  • Off: Trunk lid opener switch is off.

  • On: Trunk lid opener switch is on.

—

1Q (BCM)

LL_SW_D_LK

Off/On

Driver's door lock link switch (lock side) operation condition

  • Off: Door lock-link switch (LH) is in unlock.

  • On: Door lock-link switch (LH) is in lock.

—

1P (Lock input)

NUM_TRNSMIT

—

Displays number of the remote transmitters programmed to the start stop unit

—

—

P_RANGE_SW*1

Off/On

Not P position switch condition

  • Off: NOT P position switch is off.

  • On: NOT P position switch is on.

—

1J (P position)

PAD_DOWN_SW*4

Off/On

Steering shift switch (DOWN) condition

  • Off: DOWN switch of steering shift switch is off.

  • On: DOWN switch of steering shift switch is on.

—

1N (Steering shift switch (down))

PAD_UP_SW*4

Off/On

Steering shift switch (UP) condition

  • Off: UP switch of steering shift switch is off.

  • On: UP switch of steering shift switch is on.

—

1L (Steering shift switch (up))

R_FOG_SW

Off/On

NOTE:

Displays in the M-MDS but it does not operate.

RELAY_ACC

Off/On

ACC relay operation condition

  • Off: ACC relay drive is off.

  • On: ACC relay drive is on.

—

2C (ACC relay control)

RELAY_IG1

Off/On

IG1 relay operation condition

  • Off: IG1 relay drive is off.

  • On: IG1 relay drive is on.

—

2S (IG1 relay control)

RELAY_IG2

Off/On

NOTE:

Displays in the M-MDS but it does not operate.

RF_RECEP_ST

Initial/Transmitter/RF_Response

Displays radio reception status from the remote transmitter

  • Initial: Signal from remote transmitter is not received by start stop unit

  • Transmitter: Signal by button operation on remote transmitter is received by start stop unit

  • RF_Response: During remote transmitter authorization, response signal from remote transmitter is received by start stop unit

When verifying the PID value while operating the remote transmitter buttons, if “Transmitter” is displayed it can be determined that the transmission between the remote transmitter, keyless receiver, and start stop unit is normal.

2R (Keyless receiver communication)

RF_TRNS_NUM

Initial/No.1/No.2/No.3/No.4/No.5/No.6

When pressing the unlock button of the remote transmitter, the registration number of the remote transmitter sending radio waves to the start stop unit is displayed.

  • Initial: Registration number of remote transmitter cannot be received

  • No.1: Registration number No.1 remote transmitter is received

  • No.2: Registration number No.2 remote transmitter is received

  • No.3: Registration number No.3 remote transmitter is received

  • No.4: Registration number No.4 remote transmitter is received

  • No.5: Registration number No.5 remote transmitter is received

  • No.6: Registration number No.6 remote transmitter is received

When DTC B13D3:16 (Low remote transmitter battery voltage) is detected, the registration number of the remote transmitter in which the battery voltage has decreased is displayed in the snapshot data item TRNS_NUM_L. Display the registration number of the remote transmitter using the PID, verify the remote transmitter with the low battery voltage, and inspect the battery condition of the target remote transmitter.

2R (Keyless receiver communication)

RQ_SW_LF*5

Off/On

Request switch (LF) operation condition

  • Off: Request switch (LF) is off.

  • On: Request switch (LF) is on.

The signal is input to the start stop unit through the LF control unit of the request switch (LF).

2F (LF control unit communication)

RQ_SW_RF*5

Off/On

Request switch (RF) operation condition

  • Off: Request switch (RF) is off.

  • On: Request switch (RF) is on.

The signal is input to the start stop unit through the LF control unit of the request switch (RF).

2F (LF control unit communication)

SECURITY_I

Off/On

Output condition of security indicator

  • Off: Security indicator light is turned off.

  • On: Security indicator light is illuminated.

Security indicator on request to instrument cluster

  • 2M (HS-CAN+)

  • 2O (HS-CAN-)

SFT_LK_SOL*1

Off (Lock)/On (Unlock)

Shift lock solenoid operation condition

  • Off (Lock): Shift-lock is operated.

  • On (Unlock): Shift-lock is released.

—

2G (Shift lock)

SPD_LIM_SW

Off/On/Unknown

NOTE:

Displays in the M-MDS but it does not operate.

SSB_1

Off/On

Push button start switch 1 input signal

  • Off: Push button start switch 1 is off.

  • On: Push button start switch 1 is on.

—

1H (Push button start 1)

SSB_2

Off/On

Push button start switch 2 input signal

  • Off: Push button start switch 2 is off.

  • On: Push button start switch 2 is on.

—

2J (Push button start 2)

SSB_AMBER

Off/On

Push button start indicator light (amber) illumination request

  • Off: Push button start indicator light (amber) is turned off.

  • On: Push button start indicator light (amber) is illuminated.

—

1M (Push button illumination (amber))

SSB_GREEN

Off/On

Push button start indicator light (green) illumination request

  • Off: Push button start indicator light (green) is turned off.

  • On: Push button start indicator light (green) is illuminated.

—

1K (Push button illumination (green))

SSB_ILLMI

Off/On

Push button start illumination request

  • Off: START/STOP/ENGINE indicator light is turned off.

  • On: START/STOP/ENGINE indicator light is illuminated.

—

1I (Push button illumination)

START_RLY_1

V

Displays voltage at start stop unit terminal 2V

—

2V (Starter relay)

START_RLY_2

V

Displays voltage at start stop unit terminal 1D

—

1D (Starter monitor)

STR_A_ANG_A*6

° (deg)

Displays steering angle sensor A signal aiming angle

—

—

STR_A_ANG_B*6

° (deg)

Displays steering angle sensor B signal aiming angle

—

—

STR_AB_ANG*6

° (deg)

Displays steering angle signal (absolute angle)

  • Steering wheel in neutral position: Near 0 degrees

  • Steering wheel turned to left: Changes from 0 degrees to positive

  • Steering wheel turned to right: Changes from 0 degrees to negative

—

—

STR_ANG_S

Without/With

Vehicle with/without steering angle sensor

  • Without: Steering angle sensor is not equipped.

  • With: Steering angle sensor is equipped.

—

—

STR_ANG_S_A*6

V

Displays voltage at the steering angle sensor A signal

—

1U (Steering angle sensor (signal A/D1))

NOTE:

  • Refer to the [STEERING ANGLE SENSOR INSPECTION] in the Workshop Manual.

STR_ANG_S_B*6

V

Displays voltage at the steering angle sensor B signal

—

1W (Steering angle sensor (signal A/D1))

NOTE:

  • Refer to the [STEERING ANGLE SENSOR INSPECTION] in the Workshop Manual.

STR_ANG_S_V*6

V

Displays steering angle sensor power supply voltage

NOTE:

  • “5 V” is displayed even if the voltage is 5 V or more.

—

1S (Steering angle sensor power supply)

T_SEN_LF

Off/On

NOTE:

Displays in the M-MDS but it does not operate.

T_SEN_RF

Off/On

NOTE:

Displays in the M-MDS but it does not operate.

TURN_SW_L

Off/On

Turn switch (LH) input

  • Off: Turn switch is in position other than LH.

  • On: Turn switch is in LH position.

—

—

TURN_SW_R

Off/On

Turn switch (RH) input

  • Off: Turn switch is in position other than RH.

  • On: Turn switch is in RH position.

—

—

VPWR_ACC

V

Displays ACC power supply voltage input to start stop unit

If there is a malfunction in the ACC power supply voltage input to the start stop unit, the keyless entry system and push button start system do not operate normally because PID item VPWR_ACC is used for ACC power on/off determination.

1E (ACC monitor)

VPWR_B1

V

Displays B+ power supply (ROOM fuse) voltage input to start stop unit

If there is a malfunction in the B+ power supply (ROOM fuse) voltage input to the start stop unit, the keyless entry system does not operate normally because PID item VPWR_B1 is used for determining whether or not there is a ROOM fuse inserted.

1A (Power supply)

VPWR_B2

V

Displays B+ power supply (AT fuse) voltage input to start stop unit

When the ROOM fuse is removed, the B+ power supply (AT fuse) is the start stop unit power supply. If there is a malfunction in the B+ power supply (AT fuse) voltage input to the start stop unit when the ROOM fuse is removed, the push button start system does not operate normally.

2W (Power supply)

VPWR_B3

V

NOTE:

Displays in the M-MDS but it does not operate.

VPWR_IG1

V

Displays IG1 power supply voltage input to start stop unit

If there is a malfunction in the IG1 power supply voltage input to the start stop unit, the keyless entry system and the push button start system do not operate normally because PID item VPWR_IG1 is used for IG1 power on/off determination.

1B (Power supply)

WASHER_F

Off/On

Washer switch signal input status

  • Off: Washer switch is in OFF position.

  • On: Washer switch is in ON position.

—

—

WASHER_R

Off/On

NOTE:

Displays in the M-MDS but it does not operate.

WIP_F_INT

Off/On

Wiper switch (INT) signal input status

  • Off: Wiper switch is not in AUTO position.

  • On: Wiper switch is in AUTO position.

—

—

WIP_F_LOW

Off/On

Wiper switch (LO) signal input status

  • Off: Wiper switch is not in LO position.

  • On: Wiper switch is in LO position.

—

—

WIP_INT_E_A

Low/High

Wiper AUTO/INT volume (encoder) A signal input status

  • Low: Wiper switch AUTO/INT volume (encoder) A value is low.

  • High: Wiper switch AUTO/INT volume (encoder) A value is high.

—

—

WIP_INT_E_B

Low/High

Wiper AUTO/INT volume (encoder) B signal input status

  • Low: Wiper switch AUTO/INT volume (encoder) B value is low.

  • High: Wiper switch AUTO/INT volume (encoder) B value is high.

—

—

WIP_INT_E_C

Low/High

Wiper AUTO/INT volume (encoder) C signal input status

  • Low: Wiper switch AUTO/INT volume (encoder) C value is low.

  • High: Wiper switch AUTO/INT volume (encoder) C value is high.

—

—

WIP_R_INT

Off/On

NOTE:

Displays in the M-MDS but it does not operate.

WIP_R_ON

Off/On

NOTE:

Displays in the M-MDS but it does not operate.
*1
AT
*2
MT
*3
With cruise control switch
*4
With steering shift switch
*5
With advanced keyless entry system
*6
With adaptive front lighting system (AFS) control module

Simulation function

  • The simulation function drives the output parts set in the start stop unit regardless of the start stop unit control condition.

  • The items which can be selected are as follows.

NOTE:

  • Simulation items on parts which are not equipped to the vehicle do not operate.

Simulation item

Unit/Operation

Data contents

Data read/use method

Output part name

Operation condition

BZR_OUT

Off/On

  • Off: Keyless beeper does not sound.

  • On: Keyless beeper sounds.

  • When the simulation item BZR_OUT is turned on, a force override signal is sent to the LF control unit from the start stop unit, and the LF control unit drives (sounds) the keyless beeper.

  • With adoption of a separate excitation buzzer to the keyless beeper, buzzer does not sound normally even if the voltage is applied to the buzzer unit because there is no oscillation circuit. The integrity of the keyless beeper is determined using the simulation item BZR_OUT.

  • If the keyless buzzer does not sound even though the simulation function BZR_OUT is on, perform diagnosis using the following procedure.

    • Press the remote transmitter lock/unlock button repeatedly and measure the terminal voltage of the keyless buzzer when the button is pressed.

        • Voltage is output

      • Keyless buzzer malfunction may have occurred.

        Voltage is not output

      • Related wiring harness, or LF control unit malfunction may have occurred.

Keyless beeper

Ignition switched ON (engine off or on)

T_SEN_P_LF

Off/On

NOTE:

  • Displayed on Mazda Modular Diagnostic System (M-MDS) but does not function.

T_SEN_P_RF

Off/On

NOTE:

  • Displayed on Mazda Modular Diagnostic System (M-MDS) but does not function.
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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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