Mitsubishi Grandis. Manual - part 847

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-55

STEP 3. Connector check: B-111 Inhibitor switch 
connector, C-203 J/B connector, C-18 
intermediate connector, C-116 J/C (4), C-33 J/C 
(7) <RHD>

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-56

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

STEP 4. Check the harness between inhibitor 
switch connector B-111 terminal No.8 and J/B 
connector C-203 terminal No.12.

Check the power supply line for open circuit.

Q: Is the check result normal?

AC303714AH

Connector: B-111

B-111 (B)

Harness side

AC310623

Connectors: C-203 <LHD>

AL

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Junction block (Front view)

AC310618

Connectors: C-203 <RHD>

AK

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Junction block (Front view)

AC310615

AT

Connectors: C-18, C-116
<LHD>

C-18

2

6

1

5

9

3

7 8

10

4

C-116

23

12

1

7

29

18

4

26

15

1314

25

24

2 3

1617

28

27

5 6

10

32

21

1920
3031

8 9

22
33

11

C-18

C-116

AC310628AX

Connectors: C-18, C-116
<RHD>

C-18

C-18

2

6

1

5

9

3

7 8

10

4

C-116

23

12

1

7

29

18

26

13

25

24

2

28

27

4

15

14

3

1617

5 6

10

32

21

1920
3031

8 9

22
33

11

C-18

C-116

AC310631AV

C-33

Connector: C-33
<RHD>

2

1

3

13

12

14

21

10

5

4

6

16

15

17

7 8 9

19

18

20

11

22

AC303714AH

Connector: B-111

B-111 (B)

Harness side

AC310623

Connectors: C-203 <LHD>

AL

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Junction block (Front view)

AC310618

Connectors: C-203 <RHD>

AK

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Junction block (Front view)

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-57

YES : 

Go to Step 5.

NO : 

Repair the wiring harness.

STEP 5. MUT-III data list

Item 61: Inhibitor switch  (Refer to data list reference 
table 

P.23A-117

).

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Cope with Intermittent 

Malfunction 

P.00-5

).

NO : 

Replace the engine-A/T-ECU.

STEP 6. Check the inhibitor switch.

Refer to 

P.23A-128

.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Replace the inhibitor switch.

STEP 7. Connector check: B-111 inhibitor switch 
connector, C-112 engine-A/T-ECU connector

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the defective connector.

AC303714AH

Connector: B-111

B-111 (B)

Harness side

AC311284

Connector: C-112 <LHD>

Connector: C-112 <RHD>

Harness side

Engine-A/T-ECU

C-112 (GR)

C-112 (GR)

Engine-A/T-ECU

AG

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-58

STEP 8. Check the harness between inhibitor 
switch connector B-111 terminal No.3, 7, 4, 1 and 
engine-A/T-ECU connector C-112 terminal No.66, 
67, 75, 76.

Check the output line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the wiring harness.

STEP 9. Connector check: C-121 shift switch 
assembly connector, C-17 intermediate 
connector

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the defective connector.

AC303714AH

Connector: B-111

B-111 (B)

Harness side

AC311284

Connector: C-112 <LHD>

Connector: C-112 <RHD>

Harness side

Engine-A/T-ECU

C-112 (GR)

C-112 (GR)

Engine-A/T-ECU

AG

AC310613

BA

C-121

Connector: C-121
<LHD>

Harness side

AC310631AW

C-121

Harness side

Connector: C-121
<RHD>

AC310615

AR

Connector: C-17
<LHD>

C-17

AC310628

Connector: C-17
<RHD>

AV

C-17