Mitsubishi Montero (2004+). Manual - part 1214

 

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Mitsubishi Montero (2004+). Manual - part 1214

 

 

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-191

STEP 2. Check the harness wires for open circuit or short 
circuit between SRS-ECU connector E-07 (terminal No.34 
and 36) and side impact sensor (LH) connector F-13 
(terminal No.1 and 2).

NOTE: After inspecting intermediate connector E-19 inspect 
the wiring harness. If the intermediate connector E-19 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.34 and 36) and side impact sensor 
(LH) connector F-13 (terminal No.1 and 2) in good 
condition?
YES : 
Erase the diagnostic trouble code memory, and check 

the diagnostic trouble code. If DTC 91 steps. Replace 
the SRS-ECU (Refer to 

P.52B-215

).

NO :  Repair the harness wires between SRS-ECU 

connector E-07 and side impact sensor (LH) 
connector F-13. Then go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Q: Is DTC 91 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)

AC204128

CONNECTOR: F-13

AD

F-13 (Y)

HARNESS SIDE 
CONNECTOR
(FRONT VIEW)

FRONT SEAT

SIDE IMPACT 
SENSOR

2

1

AC204603AC

CONNECTOR: E-19

FLOOR 
CONSOLE

E-19

2

1

4

3

E-19

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-192

DTC 92: Left Hand Side-Impact Sensor System for Fault 1
DTC 95: Right Hand Side-Impact Sensor System for Fault 1

.

DTC SET CONDITIONS
These DTC are set if the followings are detected 
from the analog G-sensor output.

• Analog G-sensor is not operating.

• Analog G-sensor characteristics are abnormal.

• Analog G-sensor output is abnormal.

.

TROUBLESHOOTING HINTS
Malfunction of side impact sensor <LH> (for DTC 92) 
and side impact sensor <RH> (for DTC 95)

.

DIAGNOSIS

Required Special Tool:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B (Vehicles without 

CAN communication system)

STEP 1. Recheck for diagnostic trouble code.
(1) Replace side impact sensor <LH> (for DTC 92) and side 

impact sensor <RH> (for DTC 95) (Refer to 

P.52B-227

).

(2) Eras diagnostic trouble code memory, and check the 

diagnostic trouble code.

Q: Is any of DTC 92 or 95 set?

YES : Replace the SRS-ECU (Refer to 

P.52B-215

).

NO :  The procedure is complete.

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-193

DTC 94: Right Hand Side-Impact Sensor Power Supply Circuit System

.

AC204440

Side Impact Sensor (RH) Power Supply Circuit

AB

ACX01478AI

CONNECTOR: E-07

E-07 (Y)

AC204603AD

CONNECTOR: E-16

FLOOR 
CONSOLE

E-16

AC204129

AB

CONNECTOR: F-19

SIDE IMPACT 
SENSOR

F-19 (Y)

CENTER 
PILLER

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-194

CIRCUIT OPERATION
The side impact sensor includes an analog G sensor 
and CPU, etc. The CPU monitors the analog G sen-
sor output signal. If the CPU judges that the side-air-
bags should be deployed, it sends a fire signal to the 
SRS-ECU to deploy the side-airbags. Besides that, 
the CPU diagnoses the internal components of the 
side impact sensor. If a malfunction occurs, it 
requests the SRS-ECU to set a diagnostic trouble 
code.

.

DTC SET CONDITIONS
This DTC is set if the power supply voltage of the 
side impact sensor (RH) drops below the rated value 
for a continuous period of 5 seconds or more. How-
ever, DTC number 94 will be automatically cleared 
and the SRS warning light will switch off if the condi-
tion returns to normal. 

.

TROUBLESHOOTING HINTS

• Damaged wiring harnesses or connectors

• Malfunction of the side-airbag module (RH) 

(squib)

• Malfunction of the SRS-ECU

.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B (Vehicles without 

CAN communication system)

• MB991223 (MB991222): Harness set (Probe)

STEP 1. Check the side impact sensor (RH) power supply 
circuit at the SRS-ECU connector E-07.
(1) Disconnect the negative battery terminal.
(2) Disconnect right hand side impact sensor connector F-19, 

and measure at the wiring harness.

(3) Connect the negative battery terminal.
(4) Turn the ignition switch to the "ON" position.

CAUTION

Do not insert a test probe into the terminal from its front 
side directly as the connector contact pressure may be 
weakened.
(5) Measure the voltage between F-19 harness connector 

terminal 2 and body ground.
Voltage should measure 9 volts or more.

Q: Is the measured voltage within the specified range?

YES : Replace the side impact sensor (RH) (Refer to 

P.52B-227

). Then go to Step 3.

NO :  Go to Step 2.

AC204129

AD

CONNECTOR: F-19

SIDE IMPACT 
SENSOR

F-19 (Y)

CENTER 
PILLER

HARNESS SIDE 
CONNECTOR 
(FRONT VIEW)

2

1

AC309376

F-19 HARNESS SIDE
CONNECTOR 
(FRONT VIEW)

AC

 

 

 

 

 

 

 

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