Mitsubishi Montero (2004+). Manual - part 1175

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-35

STEP 2. Check the front impact sensor (LH) circuit at 
SRS-ECU connector E-08.
(1) Disconnect SRS-ECU connector E-08 and measure at the 

harness side (rear side).

(2) Measure the resistance between terminal 3 and terminal 4.

Resistance should be 820 

± 82 Ω

Q: Does the resistance meet the value above?

YES : Go to Step 4.
NO :  Go to Step 3.

STEP 3. Check the harness wires between SRS-ECU 
connector E-08 (terminal No.3 and 4) and front impact 
sensor (LH) connector A-23 (terminal No.1 and 2).

ACX01478AM

CONNECTOR: E-08

E-08 (Y)

HARNESS SIDE
CONNECTOR
(REAR VIEW)

13 14 15 16 17 18 19 20

5 6 7 8 9 10 11 12

1 2

3 4

AC204767AC

E-08 HARNESS SIDE 
CONNECTOR 
(REAR VIEW)

ACX01478AM

CONNECTOR: E-08

E-08 (Y)

HARNESS SIDE
CONNECTOR
(REAR VIEW)

AC204229

CONNECTOR: A-23

AD

A-23 (Y)

HARNESS SIDE 
CONNECTOR
(FRONT VIEW)

2

1

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-36

NOTE: After inspecting intermediate connector D-28, inspect 
the wiring harness. If the intermediate connector D-28 is dam-
aged, repair or replace it. Refer to GROUP 00E, Harness Con-
nector Inspection 

P.00E-2

. Then go to Step 6.

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

(terminal No.3 and 4) and front impact sensor (LH) 
connector A-23 (terminal No.1 and 2) in good condition?
YES : Go to Step 6.
NO :  Repair the harness wires between SRS-ECU 

connector E-08 and front impact sensor (LH) 
connector A-23. Then go to Step 6.

STEP 4. Check the front impact sensor (RH) circuit at 
SRS-ECU connector E-08.
(1) Disconnect SRS-ECU connector E-08 and measure at the 

harness side (rear side).

(2) Resistance between terminal 1 and terminal 2.

Resistance should be 820 

± 82 Ω

Q: Does the resistance meet the value above?

YES : Erase the diagnostic trouble code memory, and check 

the diagnostic trouble code. If DTC 11, 12 or 13 sets, 
replace the SRS-ECU (Refer to 

P.52B-215

). Then go 

to Step 6. 

NO :  Go to Step 5.

AC204231 AB

D-28

CONNECTOR : D-28

D-28

38

1213

11

26

14

1

20

6

232425

37

31

36

30

10

9

2122

35

8

7

34

17

29

1819

5

4

1516

33

28

32

27

3

2

ACX01478AM

CONNECTOR: E-08

E-08 (Y)

HARNESS SIDE
CONNECTOR
(REAR VIEW)

13 14 15 16 17 18 19 20

5 6 7 8 9 10 11 12

1 2

3 4

AC204768AC

E-08 HARNESS SIDE 
CONNECTOR
(REAR VIEW)

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-37

STEP 5. Check the harness wires between SRS-ECU 
connector E-08 (terminal No.1 and 2) and front impact 
sensor (RH) connector A-30 (terminal No.1 and 2).

NOTE: After inspecting intermediate connector D-28, inspect 
the wiring harness. If intermediate connector D-28 is damaged, 
repair or replace it. Refer to GROUP 00E, Harness Connector 
Inspection 

P.00E-2

. Then go to Step 6.

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

(terminal No.1 and 2) and front impact sensor (RH) 
connector A-30 (terminal No.1 and 2) in good condition?
YES : Go to Step 6.
NO :  Repair the harness wires between SRS-ECU 

connector E-08 and front impact sensor (RH) 
connector A-30. Then go to Step 6.

ACX01478AM

CONNECTOR: E-08

E-08 (Y)

HARNESS SIDE
CONNECTOR
(REAR VIEW)

AC204228

CONNECTOR: A-30

AD

A-30 (Y)

HARNESS SIDE 
CONNECTOR
(FRONT VIEW)

2

1

AC204231 AB

D-28

CONNECTOR : D-28

D-28

38

1213

11

26

14

1

20

6

232425

37

31

36

30

10

9

2122

35

8

7

34

17

29

1819

5

4

1516

33

28

32

27

3

2

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-38

STEP 6. Recheck for diagnostic trouble code.
Q: Is any of DTC 11, 12 or 13 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

).

DTC 14: Analog G-Sensor System in the SRS-ECU
DTC 15: Safing G-Sensor Short Circuit
DTC 16: Safing G-Sensor Open Circuit
DTC 17: Safing G-Sensor for Side-AirBag Faults
DTC 31: SRS-ECU Capacitor Circuit Voltage too High
DTC 32: SRS-ECU Capacitor Circuit Voltage too Low
DTC 45: SRS-ECU Non-Volatile Memory (EEPROM) and A/D Converter System
DTC 51: Driver's Air Bag Module (Squib Ignition Drive Circuit) System Detected Short Circuit
DTC 52: Driver's Air Bag Module (Squib Ignition Drive Circuit) System Detected Open Circuit
DTC 54: Passenger’s (Front) Air Bag Module (Squib Ignition Drive Circuit) System Detected Short 
Circuit
DTC 55: Passenger’s (Front) Air Bag Module (Squib Ignition Drive Circuit) System Detected Open 
Circuit
DTC 56: Driver’s Seat Belt Pre-tensioner (Squib Ignition Drive Circuit) System Detected Short Circuit
DTC 57: Driver’s Seat Belt Pre-tensioner (Squib Ignition Drive Circuit) System Detected Open Circuit
DTC 58: Passenger’s Seat Belt Pre-tensioner (Squib Ignition Drive Circuit) System Detected Short 
Circuit
DTC 59: Passenger’s Seat Belt Pre-tensioner (Squib Ignition Drive Circuit) System Detected Open 
Circuit
DTC 73: Right Hand Side-Airbag Module (Squib) System Detected Short Circuit
DTC 74: Right Hand Side-Airbag Module (Squib) System Detected Open Circuit
DTC 83: Left Hand Side-Airbag Module (Squib) System Fault 3 for Ignition Drive Circuit
DTC 84: Left Hand Side-Air Bag Module (Squib) System Fault 4 for Ignition Drive Circuit

.

DTC SET CONDITIONS
These DTC are set when a fault is detected in the 
SRS-ECU. The most likely causes for this code to be 
set are shown in the table below:

CODE NO. DEFECTIVE PART

SYMPTOMS

14

Analog G-sensor

• When the analog G-sensor is not operating

• When the characteristics of the analog G-sensor are 

abnormal

• When the output from the analog G-sensor is abnormal

15

Safing G-sensor (front air bag)

• Short circuit in the safing G-sensor

16

• Open circuit in the safing G-sensor

17

Safing G-sensor (side-airbag)

• When the safing G-sensor is not operating

• When the characteristics of the safing G-sensor are 

abnormal

• When the output from the safing G-sensor is abnormal