MX5 mk4 Manual
Home bodyshop manual wiring diagram workshop manual service highlights transmission overhaul

Knowledge Base

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

 

< Previous   Next >

DSC HU/CM INSPECTION

1. Disconnect the DSC HU/CM connector. (See DSC HU/CM REMOVAL/INSTALLATION.)
2. Measure the voltage or continuity of the DSC HU/CM wiring harness-side connctor using a tester.

Terminal Voltage Table (Reference)

Terminal

Connected to

Measured item

Test condition or measured terminal

Specification (Reference)

Inspection item

A

Battery

Voltage

Under any condition

B+

  • Inspect the battery.

    (See BATTERY INSPECTION.)

  • Inspect related wiring harness.

B

Battery

Voltage

Under any condition

B+

  • Inspect the battery.

    (See BATTERY INSPECTION.)

  • Inspect related wiring harness.

C

CAN related module

Because this terminal is for communication, determination using terminal voltage inspection is not possible. Perform the inspection using the DTC inspection.

D

CAN related module

Because this terminal is for communication, determination using terminal voltage inspection is not possible. Perform the inspection using the DTC inspection.

E

—

—

—

—

—

F

—

—

—

—

—

G

—

—

—

—

—

H

—

—

—

—

—

I

IG1 relay

Voltage

Ignition off

1.0 V or less

  • Inspect the IG1 relay.

    (See RELAY INSPECTION.)

  • Inspect related wiring harness.

Ignition ON (engine off)

B+

J

RF ABS wheel-speed sensor

Continuity

DSC HU/CM terminal J—RF ABS wheel-speed sensor terminal B

Continuity detected

  • Inspect the RF ABS wheel-speed sensor.

    (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

  • Inspect related wiring harness.

K

RF ABS wheel-speed sensor

Continuity

DSC HU/CM terminal K—RF ABS wheel-speed sensor terminal A

Continuity detected

  • Inspect the RF ABS wheel-speed sensor.

    (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

  • Inspect related wiring harness.

L

RR ABS wheel-speed sensor

Continuity

DSC HU/CM terminal L—RR ABS wheel-speed sensor terminal B

Continuity detected

  • Inspect the RR ABS wheel-speed sensor.

    (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

  • Inspect related wiring harness.

M

RR ABS wheel-speed sensor

Continuity

DSC HU/CM terminal M—RR ABS wheel-speed sensor terminal A

Continuity detected

  • Inspect the RR ABS wheel-speed sensor.

    (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

  • Inspect related wiring harness.

N

—

—

—

—

—

O

—

—

—

—

—

P

LR ABS wheel-speed sensor

Continuity

DSC HU/CM terminal P—LR ABS wheel-speed sensor terminal B

Continuity detected

  • Inspect the LR ABS wheel-speed sensor.

    (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

  • Inspect related wiring harness.

Q

—

—

—

—

—

R

LR ABS wheel-speed sensor

Continuity

DSC HU/CM terminal R—LR ABS wheel-speed sensor terminal A

Continuity detected

  • Inspect the LR ABS wheel-speed sensor.

    (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

  • Inspect related wiring harness.

S

LF ABS wheel-speed sensor

Continuity

DSC HU/CM terminal S—LF ABS wheel-speed sensor terminal B

Continuity detected

  • Inspect the LF ABS wheel-speed sensor.

    (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

  • Inspect related wiring harness.

T

—

—

—

—

—

U

—

—

—

—

—

V

—

—

—

—

—

W

LF ABS wheel-speed sensor

Continuity

DSC HU/CM terminal W—LF ABS wheel-speed sensor terminal A

Continuity detected

  • Inspect the LF ABS wheel-speed sensor.

    (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

  • Inspect related wiring harness.

X

—

—

—

—

—

Y

—

—

—

—

—

Z

—

—

—

—

—

AA

—

—

—

—

—

AB

—

—

—

—

—

AC

—

—

—

—

—

AD

—

—

—

—

—

AE

—

—

—

—

—

AF

—

—

—

—

—

AG

—

—

—

—

—

AH

—

—

—

—

—

AI

—

—

—

—

—

AJ

—

—

—

—

—

AK

Ground point

Continuity

DSC HU/CM terminal AK—ground point

Continuity detected

  • Inspect related wiring harness.

AL

Ground point

Continuity

DSC HU/CM terminal AL—ground point

Continuity detected

  • Inspect related wiring harness.

< Previous   Next >
 

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

COPYRIGHT NOTICE:
This fan site is not affiliated with Mazda, and is intended for personal, or commercial use only. The content of our web pages is for general information purposes only and is presented “as is”. We give no assurance or warranty regarding the accuracy of the contents. Readers should do their due diligence and seek the advice of an appropriately certified automotive technician before attempting any steps on this site. Original content provided by Mazda North America. The content of the manual is copyright under DMCA to: full.metal.resistor@gmail.com
LIMITATION OF LIABILITY:
We accept no responsibility for errors, inaccuracies, or omissions found on these pages. Additionally, we hereby exclude liability for any demands, claims, damages or losses of any kind with regard to any content or information provided on our web-site, including but not limited to incidental or consequential damages, direct or indirect loss, compensatory damages, loss of profits, or otherwise. By using this manual you assume full liablity for any procedures carried out on your vehicle, and are responsible for the vehicle remaining road legal and safe.
Site design © MX5 Docs 2019
Privacy policy
Cookies
X
We use cookies to improve your experience on
our site. By using our site you consent to cookies.
Learn more
I Agree