Mitsubishi Montero (2004+). Manual - part 1190

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-95

NOTE: After inspecting junction block connectors D-209 and 
D-208, inspect the wiring harness. If junction block connectors 
are damaged, repair or replace them. Refer to GROUP 00E, 
Harness Connector Inspection 

P.00E-2

. Then go to Step 8.

Q: Are harness wire between SRS-ECU connector E-08 

(terminal No.13) and the ignition switch connector 
D-204 (terminal No.2) in good condition?
YES : Go to Step 8.
NO :  Repair the harness wire between SRS-ECU 

connector E-08 and the ignition switch connector 
D-204. Then go to Step 8.

STEP 4. Check a burned-out fuse.
(1) Replace the fuse.
(2) Turn the ignition switch to the "ON" position, wait for at least 

one minute and then turn the ignition switch to the "LOCK" 
(OFF) position. 

(3) Check the fuse.
Q: Is the fuse in good condition?

YES : Go to Step 8.
NO :  Go to Step 5.

AC204257

CONNECTORS : D-208, D-209

AI

D-209

D-208

D-208 HARNESS SIDE
CONNECTOR (REAR VIEW)

D-209 HARNESS SIDE
CONNECTOR (REAR VIEW)

1

2

3

5

6

4

JUNCTION BLOCK
(FRONT VIEW)

5 4 3

2

12

13

10

11

7

8

1

6

9

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-96

STEP 5. Check the circuit between the SRS-ECU and the 
junction block connector D-209.
(1) Disconnect junction block connector D-209, and measure at 

the wiring harness.

CAUTION

Do not insert a test probe into the terminal from its front 
side directly as the connector contact pressure may be 
weakened.
(2) Check for continuity between D-209 harness connector 

terminal 10 and body ground.
It should be open circuit.

Q: Does continuity exist?

YES : Go to Step 6.
NO :  Go to Step 8.

AC204257

CONNECTORS : D-208, D-209

AI

D-209

D-208

D-208 HARNESS SIDE
CONNECTOR (REAR VIEW)

D-209 HARNESS SIDE
CONNECTOR (REAR VIEW)

1

2

3

5

6

4

JUNCTION BLOCK
(FRONT VIEW)

5 4 3

2

12

13

10

11

7

8

1

6

9

AC204459

5

4

3

2

12 13

10 11

7 8

1

6

9

AC

D-209 HARNESS SIDE 
CONNECTOR 
(REAR VIEW)

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-97

STEP 6. Check the power supply circuit for short circuit to 
ground at the SRS-ECU connector E-08.
(1) Disconnect SRS-ECU connector E-08, and measure at the 

wiring harness.

CAUTION

Do not insert a test probe into the terminal from its front 
side directly as the connector contact pressure may be 
weakened.
(2) Check for continuity between E-08 harness connector 

terminal 13 and body ground.
It should be open circuit.

Q: Is the circuit normal?

YES : Erase the diagnostic trouble code memory, and check 

the diagnostic trouble code. If DTC 42 sets, replace 
the SRS-ECU (Refer to 

P.52B-215

). Then go to Step 

8.

NO :  Go to Step 7.

ACX01478AM

CONNECTOR: E-08

E-08 (Y)

HARNESS SIDE
CONNECTOR
(REAR VIEW)

AC202026

13 14 15 16 17 18 19 20

5 6 7 8 9 10 11 12

1 2

3 4

AK

E-08 HARNESS SIDE
CONNECTOR (REAR VIEW)

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-98

STEP 7. Check the harness wires between SRS-ECU 
connector E-08 (terminal No.13) and junction block 
connector D-209 (terminal No.10).
Q: Are harness wires between SRS-ECU connector E-08 

(terminal No.13) and junction block connector D-209 
(terminal No.10) in good condition?
YES : Go to Step 8.
NO :  Repair the harness wires between SRS-ECU 

connector E-08 and junction block connector D-209. 
Then go to Step 8.

STEP 8. Recheck for diagnostic trouble code.
Q: Is DTC 42 set?

YES : Return to Step 1.
NO :  The procedure is complete. (If no malfunctions are not 

found in all steps, an intermittent malfunction is 
suspected. Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-6

). 

ACX01478AH

CONNECTOR: E-08

E-08 (Y)

HARNESS
CONNECTOR:
HARNESS SIDE

AC204257

CONNECTOR : D-209

AJ

D-209

D-209 HARNESS SIDE
CONNECTOR (FRONT VIEW)

JUNCTION BLOCK
(FRONT VIEW)

5 4 3

2

12

13

10

11

7

8

1

6

9