Mazda 3 Service Manual: DSC HU/CM Inspection

Terminal

Signal name

Connected to

Measured item

Measured terminal (measurement condition)

Standard

Inspection item(s)

A

—

—

—

—

—

—

B

Ground

Ground point

Continuity

B—ground point

Continuity detected

• Wiring harness

  (B—ground point)

C

—

—

—

—

—

—

D

—

—

—

—

—

—

E

—

—

—

—

—

—

F

LF wheel-speed sensor (-)

LF wheel-speed sensor

Continuity

F—LF ABS wheel-speed sensor terminal B

Continuity detected

• Wiring harness (F—LF ABS wheel-speed sensor terminal B)

G

—

—

—

—

—

—

H

—

—

—

—

—

—

I

LF wheel-speed sensor (+)

LF ABS wheel-speed sensor

Continuity

I—LF ABS wheel-speed sensor terminal A

Continuity detected

• Wiring harness (I—LF ABS wheel-speed sensor terminal A)

J

CAN_L

DLC-2 (CAN_L)

This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.

K

—

—

—

—

—

—

L

—

—

—

—

—

—

M

CAN_H

DLC-2 (CAN_H)

This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.

N

—

—

—

—

—

—

O

RR wheel-speed (+)

RR ABS wheel-speed sensor

Continuity

O—RR ABS wheel-speed sensor terminal A

Continuity detected

• Wiring harness (O—RR ABS wheel-speed sensor terminal A)

P

—

—

—

—

—

—

Q

—

—

—

—

—

—

R

RR wheel-speed (-)

RR ABS wheel-speed sensor

Continuity

R—RR ABS wheel-speed sensor terminal B

Continuity detected

• Wiring harness (R—RR ABS wheel-speed sensor terminal B)

S

—

—

—

—

—

—

T

—

—

—

—

—

—

U

—

—

—

—

—

—

V

—

—

—

—

—

—

W

—

—

—

—

—

—

X

—

—

—

—

—

—

Y

Power supply (system)

Ignition switch or IG1 relay

Voltage

Switch the ignition to ON.

B+

• Wiring harness (Y—ignition switch or IG1 relay)

Switch the ignition to off.

1 V or less

Z

—

—

—

—

—

—

AA

—

—

—

—

—

—

AB

—

—

—

—

—

—

AC

—

—

—

—

—

—

AD

—

—

—

—

—

—

AE

—

—

—

—

—

—

AF

—

—

—

—

—

—

AG

LR wheel-speed (-)

LR wheel-speed sensor

Continuity

AG—LR ABS wheel-speed sensor terminal B

Continuity detected

• Wiring harness (AG—LR ABS wheel-speed sensor terminal B)

AH

—

—

—

—

—

—

AI

—

—

—

—

—

—

AJ

LR wheel-speed (+)

LR ABS wheel-speed sensor

Continuity

AJ—LR ABS wheel-speed sensor terminal A

Continuity detected

• Wiring harness (AJ—LR ABS wheel-speed sensor terminal A)

AK

DSC OFF switch

DSC OFF switch

Continuity

AK—DSC OFF switch terminal B

Continuity detected

• Wiring harness (AK—DSC OFF switch terminal B)

AL

CAN2_L

SAS control module

This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.

AM

—

—

—

—

—

—

AN

—

—

—

—

—

—

AO

CAN2_H

SAS control module

This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.

AP

RF wheel-speed (+)

RF ABS wheel-speed sensor

Continuity

AP—RF ABS wheel-speed sensor terminal A

Continuity detected

• Wiring harness (AP—RF ABS wheel-speed sensor terminal A)

AQ

—

—

—

—

—

—

AR

—

—

—

—

—

—

AS

RF wheel-speed (-)

RF ABS wheel-speed sensor

Continuity

AS—RF ABS wheel-speed sensor terminal B

Continuity detected

• Wiring harness (AS—RF ABS wheel-speed sensor terminal B)

AT

Power supply

(ABS motor operation)

Battery

Voltage

Under any condition

B+

• Wiring harness

  (AT—battery)

AU

Power supply

(solenoid operation)

Battery

Voltage

Under any condition

B+

• Wiring harness

  (AU—battery)