Mitsubishi Montero (2004+). Manual - part 1215

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-195

STEP 2. Check the harness wires for open circuit or short 
circuit between SRS-ECU connector E-07 (terminal No.40 
and 42) and side impact sensor (RH) connector F-19 
(terminal No.1 and 2).

NOTE: After inspecting intermediate connector E-16, inspect 
the wiring harness. If the intermediate connector E-16 is dam-
aged, repair or replace it (Refer to GROUP 00E, Harness Con-
nector Inspection 

P.00E-2

). Then go to Step 3. 

Q: Are the harness wires between SRS-ECU connector 

E-07 (terminal No.40 and 42) and side impact sensor 
(RH) connector F-19 (terminal No.1 and 2) in good 
condition?
YES : Erase the diagnostic trouble code memory, and check 

the diagnostic trouble code. If DTC 94 sets, replace 
the SRS-ECU (Refer to 

P.52B-215

). Then go to Step 

3.

NO :  Repair the harness wires between SRS-ECU 

connector E-07 and side impact sensor (RH) 
connector F-19. Then go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Q: Is DTC 94 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

).

ACX01478AJ

CONNECTOR: E-07

E-07 (Y)

34 35 36 37 38 39 40 41 42

25 26 27 28 29 30 31 32 33

21 22

23 24

HARNESS SIDE
CONNECTOR
(REAR VIEW)

AC204129

AD

CONNECTOR: F-19

SIDE IMPACT 
SENSOR

F-19 (Y)

CENTER 
PILLER

HARNESS SIDE 
CONNECTOR 
(FRONT VIEW)

2

1

AC204603AE

CONNECTOR: E-16

FLOOR 
CONSOLE

E-16

5

4

3

2

1

E-16

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-196

TROUBLE SYMPTOM CHART

M1524003400547

SYMPTOMS

INSPECTION PROCEDURE NO. REFERENCE PAGE

Communication with scan tool MB991502 is not 
possible (Communication with all systems is not 
possible).

-

GROUP 13A, 
DIAGNOSIS 

P.13A-831

.

Communication with scan tool MB991502 is not 
possible (Communication is not possible with 
SRS).

1

 

P.52B-197

When the ignition switch is turned to the "ON" 
position (engine stopped), the SRS warning 
light does not illuminate.

Refer to DTC No.43.

 

P.52B-99

After the ignition switch is turned to the "ON" 
position the SRS warning light does not go off 
within approximately seven seconds.

Refer to DTC No.43.

 

P.52B-105

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-197

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Communication with scan tool MB991502 is not possible 
(Communication is not possible with SRS).

AC204441AB

SRS-ECU Power Supply Circuit

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-198

.

CIRCUIT OPERATION

• The SRS-ECU is powered from the ignition 

switch (IG1).

• The SRS-ECU power is supplied from two cir-

cuits. Even if one circuit is shut off, the air bag 
can inflate.

• The SRS system diagnosis can be done by con-

necting scan tool MB991502 to the data link con-
nector.

.

TECHNICAL DESCRIPTION (COMMENT)
If communication is not possible with the SRS only, 
the cause is probably an open circuit in the on-board 
diagnostic output circuit of the SRS or in the power 
circuit (including ground circuit).

.

TROUBLESHOOTING HINTS

• Damaged wiring harnesses or connectors

• Malfunction of the SRS-ECU

.

DIAGNOSIS

STEP 1. Check that the scan tool can communicate with 
the other systems.
Q: Can the scan tool communicate with the other systems?

YES : Go to Step 2.
NO :  Refer to GROUP 13A, Diagnosis 

P.13A-831

.

AC204230

CONNECTOR : D-29

AE

D-29

AC204695

CONNECTOR : D-118

AB

D-118 (B)

ACCELLATOR PEDAL

ACX01632

CONNECTORS: D-208, D-209, D-210

D-208

D-210

JUNCTION BLOCK
(FRONT VIEW)

AJ

D-209

ACX01478 AG

CONNECTOR: E-08

E-08 (Y)