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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
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PID/DATA MONITOR TABLE [DSC HU/CM]

NOTE:

  • If the PID “STR_ANG_R” is inspected, perform the following procedure before inspecting.

    • Switch the ignition to OFF, and maintain this condition for approx. 3 s.

    • Set the vehicle wheels in the straight-ahead position.

    • Switch the ignition ON (engine off or on).

—: Not applicable

Monitor item

Unit/Operation

Test condition

Specification (Reference)

Inspection item

BRAKE_SW

Off/On

Brake pedal released

Off

  • Inspect the brake switch.

    (See BRAKE SWITCH INSPECTION.)

Brake pedal depressed

On

BRK_F_P_C

Pa, psi

Changes according to the brake fluid pressure

  • Inspect the brake fluid pressure sensor.

    (See BRAKE FLUID PRESSURE SENSOR INSPECTION.)

BRK_F_P_R

Pa, psi

Changes according to the brake fluid pressure

  • Inspect the brake fluid pressure sensor.

    (See BRAKE FLUID PRESSURE SENSOR INSPECTION.)

DDS_MODE

Not_Learned/Learning/Learned

During initialization

Not_Learned

  • Perform the DTC inspection for the DSC HU/CM.

    (See DTC INSPECTION [DSC HU/CM].)

During learning

Learning

Learning completed (after ignition is switched off, switch it ON (engine off or on) and verify)

Learned

DSC_OFF_SW

Off/On

DSC OFF switch is released

Off

  • Inspect the DSC OFF switch.

    (See DSC OFF SWITCH INSPECTION.)

DSC OFF switch is depressed

On

DSC_ST

Off/On

During DSC OFF mode

Off

  • Perform the DTC inspection for the DSC HU/CM.

    (See DTC INSPECTION [DSC HU/CM].)

Other than DSC OFF mode

On

LAT_ACCL_C

G

Vehicle stopped or driving at constant speed

0 G

  • Perform the DTC inspection for the SAS control module.

    (See DTC INSPECTION [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].)

    (See DTC INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)

Cornering to left

Changes to 0 G—positive

Cornering to right

Changes to 0 G—negative

LAT_ACCL_R

G

Vehicle stopped or driving at constant speed

0 G

  • Perform the DTC inspection for the SAS control module.

    (See DTC INSPECTION [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].)

    (See DTC INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)

Cornering to left

Changes to 0 G—positive

Cornering to right

Changes to 0 G—negative

LON_ACCL_C

G

Vehicle stopped or driving at constant speed

0 G

  • Perform the DTC inspection for the SAS control module.

    (See DTC INSPECTION [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].)

    (See DTC INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)

Cornering to left

Changes to 0 G—positive

Cornering to right

Changes to 0 G—negative

LON_ACCL_R

G

Vehicle stopped or driving at constant speed

0 G

  • Perform the DTC inspection for the SAS control module.

    (See DTC INSPECTION [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].)

    (See DTC INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)

Cornering to left

Changes to 0 G—positive

Cornering to right

Changes to 0 G—negative

P_BRAKE_SW

Off/On

Parking brake lever released

Off

  • Inspect the parking brake switch.

    (See PARKING BRAKE SWITCH INSPECTION.)

Parking brake lever pulled

On

PMP_MT

Off/On

Pump motor not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Pump motor activated

On

PMP_MT_SP

Off/On

Pump motor not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Pump motor activated

On

R_GEAR_SW

Off/On

Except shift/selector lever at R position

Off

  • Perform the DTC inspection for the PCM.

    (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].)

  • Perform the DTC inspection for the TCM.

    (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [TCM (SJ6A-EL)].)

Shift/selector lever at R position

On

STR_ANG_C

NOTE:

  • Constantly indicates 0 ° until the steering wheel angle neutral position determination by the DSC HU/CM is completed.

  • The steering wheel angle neutral position determination by the DSC HU/CM is completed when the vehicle is driven in a straight line at a speed of 20 km/h {12 mph} or more for several seconds.

°

Steering wheel in neutral position

0 °

  • Perform the DTC inspection for the PCM, DSC HU/CM, and EPS control module. If a DTC is displayed after performing the DTC inspection for the PCM, DSC HU/CM, and EPS control module, repair the malfunctioning part according to the applicable DTC troubleshooting.

    (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].)

    (See DTC INSPECTION [DSC HU/CM].)

    (See DTC INSPECTION [EPS CONTROL MODULE].)

  • After performing the DTC inspection, perform the following procedure:

    • Start the engine and drive the vehicle in a straight line at a speed of 20 km/h {12 mph} or more for several seconds.

  • If an abnormal value is indicated after verifying the value of the STR_ANG_C again, replace the DSC HU/CM.

    (See DSC HU/CM REMOVAL/INSTALLATION.)

Steered left

Changes to 0 °—positive

Steered right

Changes to 0 °—negative

STR_ANG_R

NOTE:

  • The signal indicated in this item is a steering angle (relative angle) in the EPS control module.

°

Steering wheel position when ignition is switched ON (engine off or on)

0 °

  • Inspect the following PID:

    (See PID/DATA MONITOR TABLE [EPS CONTROL MODULE].)

    • STR_ANG (EPS control module)

Steered left

Changes to 0 °—positive

Steered right

Changes to 0 °—negative

TPMS_TYPE

No_DDS/DDS/DDS+TOM_O/DDS+TOM_EU/DDS+TOM_US

Indicates Tire Pressure Monitoring System (TPMS) type

—

V_INLET_LF

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_INLET_LR

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_INLET_RF

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_INLET_RR

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_OUTLET_LF

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_OUTLET_LR

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_OUTLET_RF

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_OUTLET_RR

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_STB_LF/RR

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_STB_RF/LR

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_TRC_LF/RR

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

V_TRC_RF/LR

Off/On

Solenoid valve not activated

Off

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

Solenoid valve activated

On

VPWR_B_SOL

V

Indicates power supply voltage for DSC HU/CM.

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

VSPD

KPH, MPH

Indicates vehicle speed.

  • Inspect the DSC HU/CM.

    (See DSC HU/CM INSPECTION.)

WSPD_SEN_LF

KPH, MPH

Indicates vehicle speed.

  • Inspect the LF ABS wheel-speed sensor.

    (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

WSPD_SEN_LR

KPH, MPH

Indicates vehicle speed.

  • Inspect the LR ABS wheel-speed sensor.

    (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

WSPD_SEN_RF

KPH, MPH

Indicates vehicle speed.

  • Inspect the RF ABS wheel-speed sensor.

    (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

WSPD_SEN_RR

KPH, MPH

Indicates vehicle speed.

  • Inspect the RR ABS wheel-speed sensor.

    (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

YAW_RATE_C

°/s

Vehicle stopped or driving at constant speed

0 °/s

  • Perform the DTC inspection for the SAS control module.

    (See DTC INSPECTION [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].)

    (See DTC INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)

Cornering to left

Changes to 0 °/s—positive

Cornering to right

Changes to 0 °/s—negative

YAW_RATE_R

°/s

Vehicle stopped or driving at constant speed

0 °/s

  • Perform the DTC inspection for the SAS control module.

    (See DTC INSPECTION [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].)

    (See DTC INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)

Cornering to left

Changes to 0 °/s—positive

Cornering to right

Changes to 0 °/s—negative

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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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