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DSC HU/CM INSPECTION

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2016 – MX-5 – Brakes

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+

B

Battery

Voltage

Under any condition

B+

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

K

RF ABS wheel-speed sensor

Continuity

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

Continuity detected

L

RR ABS wheel-speed sensor

Continuity

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

Continuity detected

M

RR ABS wheel-speed sensor

Continuity

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

Continuity detected

N

O

P

LR ABS wheel-speed sensor

Continuity

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

Continuity detected

Q

R

LR ABS wheel-speed sensor

Continuity

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

Continuity detected

S

LF ABS wheel-speed sensor

Continuity

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

Continuity detected

T

U

V

W

LF ABS wheel-speed sensor

Continuity

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

Continuity detected

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.

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