Mitsubishi 380. Manual - part 405

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-160

STEP 10. Check the harness for an open circuit or short 
circuit to ground between A/T control relay connector 
B-16X terminal 4 in the engine component relay box and 
A/T control solenoid valve assembly connector B-108 
terminal 9.
Q: Is the harness wire in good condition?

YES : Go to Step 11.
NO :  Repair or replace the harness wire.

10DB098A

RELAY BOX

CONNECTOR: B-16X

 

2

1

3 4

FRONT OF
VEHICLE

AC306322

CONNECTOR: B-108

B-108 (GR)

AC

TRANSMISSION
RANGE SWITCH

2

7

1

8

3

9

4

6

10

5

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-161

STEP 11. Check A/T-ECU connector B-22 and A/T control 
solenoid valve assembly connector B-108 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 12.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

16DB564A

COVER

AIR

CLEANER

A/T

CONTROL

UNIT

CONNECTORS:  B-19, B-22

AC306322

CONNECTOR: B-108

B-108 (GR)

AC

TRANSMISSION
RANGE SWITCH

2

7

1

8

3

9

4

6

10

5

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-162

STEP 12. Check the harness for an open or short circuit to 
ground between A/T-ECU connector B-21 (terminals 1, 14 
and 2) and A/T control solenoid valve assembly connector 
B-108 (terminals 3, 4 and 5).
Q: Are the harness wires in good condition?

YES : Go to Step 13.
NO :  Repair or replace the harness wire.

16DB564A

COVER

AIR

CLEANER

A/T

CONTROL

UNIT

CONNECTORS:  B-19, B-22

AC306322

CONNECTOR: B-108

B-108 (GR)

AC

TRANSMISSION
RANGE SWITCH

2

7

1

8

3

9

4

6

10

5

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-163

STEP 13. Check the harness for an open or short circuit to 
ground between A/T control solenoid valve assembly 
connector B-108 (terminals 3, 4, 5, and 9) and solenoid 
valve connectors B-108-1, B-108-2 and B-108-3.
Q: Is the harness wire in good condition?

YES : Replace the A/T-ECU.
NO :  Replace the harness wire.

AC306322

CONNECTOR: B-108

B-108 (GR)

AC

TRANSMISSION
RANGE SWITCH

2

7

1

8

3

9

4

6

10

5

VALVE BODY
ASSEMBLY

10DB106A

CONNECTORS: B-108-1, B-108-2, B-108-3     

B-108-1

B-108-2

B-108-3