Mitsubishi 380. Manual - part 952

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-33

STEP 9. Check ABS-ECU connector A-02 and wheel speed 
sensor <front: LH> connector A-04 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.

NOTE: The special tool (Inspection test harness) MB991219 
for connector pin contact pressure should be used. The test 
probe should never be forcibly inserted, as it may cause a 
defective contact.

              SIGNAL

   TERMINAL  NO.

  NORMAL CONDITION

 ABS (A-02)

   SENSOR

FR wheel speed sensor  
(A-01)

9

2

Less than 2 ohms

10

1

Less than 2 ohms

RR wheel speed sensor  
(D-30)

8

1

Less than 2 ohms

19

2

Less than 2 ohms

FL wheel speed sensor   
(A-04)

16

2

Less than 2 ohms

5

1

Less than 2 ohms

RL wheel speed sensor   
(D-31)

6

1

Less than 2 ohms

17

2

Less than 2 ohms

ABS-ECU
 CONNECTOR
 (A-02)

Supply

Signal

WHEEL SPEED
    SENSOR

Wheel speed 
sensor connectors:
A-04,  A-01,  D-31,  D-30

Terminals:
 5, 10, 17, 19

35DB123A

Terminals:
 16, 9, 6, 8

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-34

Q: Are ABS-ECU connector A-02 and wheel speed sensor 

<front: LH> connector A-04 damaged?
YES : Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Then go to Step 13.

NO :  Open or short circuit may be present in the front left 

wheel speed sensor circuit. Repair the wiring harness 
between ABS-ECU connector A-02 (terminals 5 and 
16) and front left wheel speed sensor A-04 (terminals 
1 and 2).Then go to Step 13.

16DB402A

A-02 (GR)

CONNECTOR: A-02 

A-02 HARNESS CONNECTOR:

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-35

STEP 10. Check ABS-ECU connector A-02, intermediate 
connector C-25 and wheel speed sensor <Rear: RH> 
connector D-30 for loose, corroded or damaged terminals, 
or terminals pushed back in the connector.

NOTE: The special tool (Inspection test harness) MB991219 
for connector pin contact pressure should be used. The test 
probe should never be forcibly inserted, as it may cause a 
defective contact.

              SIGNAL

   TERMINAL  NO.

  NORMAL CONDITION

 ABS (A-02)

   SENSOR

FR wheel speed sensor  
(A-01)

9

2

Less than 2 ohms

10

1

Less than 2 ohms

RR wheel speed sensor  
(D-30)

8

1

Less than 2 ohms

19

2

Less than 2 ohms

FL wheel speed sensor   
(A-04)

16

2

Less than 2 ohms

5

1

Less than 2 ohms

RL wheel speed sensor   
(D-31)

6

1

Less than 2 ohms

17

2

Less than 2 ohms

ABS-ECU
 CONNECTOR
 (A-02)

Supply

Signal

WHEEL SPEED
    SENSOR

Wheel speed 
sensor connectors:
A-04,  A-01,  D-31,  D-30

Terminals:
 5, 10, 17, 19

35DB123A

Terminals:
 16, 9, 6, 8

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-36

Q: Are ABS-ECU connector A-02, intermediate connector 

C-25 and wheel speed sensor <Rear: RH> connector 
D-30 damaged?
YES : Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Then go to Step 13.

NO :  Open or short circuit may be present in the rear right 

wheel speed sensor circuit. Repair the wiring harness 
between ABS-ECU connector A-02 (terminals 8 and 
19) and rear right wheel speed sensor D-30 (terminals 
1 and 2).Then go to Step 13.

35DB033A

CONNECTOR: C-25

C-25