Mitsubishi Montero (2002-2004). Manual - part 801

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-73

STEP 2. Check the SRS warning light.
(1) Disconnect the negative battery cable.
(2) Disconnect the combination meter connector D-04.
(3) Connect the negative battery cable.
(4) Turn the ignition switch to the "ON" position.

Q: Does the SRS warning light go out when combination 

meter connector D-04 is disconnected?
YES : Go to Step 3.
NO :  Replace the combination meter. Then go to Step 4.

AC204230

CONNECTOR : D-04

AD

D-04 (GR)

ACX01667

AT

TEMP

SRS

P
R
N
D

5
4
3
2
1

x1000r/min

2

3

4

5

6

7

8

1

AB

SRS WARNING LIGHT

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-74

STEP 3. Check the harness for short circuit to ground 
between SRS-ECU connector E-08 (terminal No.8) and 
combination meter connector D-04 (terminal No.44).
Q: Is the harness wire between the SRS-ECU connector E-

08 (terminal No.8) and combination meter connector D-
04 (terminal No.44) in good condition?
YES : Erase the diagnostic trouble code memory, and check 

the diagnostic trouble code. If DTC 43 sets, replace 
the SRS-ECU. (Refer to 

P.52Ba-31

.) Then go to Step 

4.

NO :  Repair the harness wire between SRS-ECU 

connector E-08 and combination meter connector D-
04. Then go to Step 4.

STEP 4. Recheck for diagnostic trouble code.
Q: Is DTC 43 set?

YES : There is no action to be taken.
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

AC204231AE

CONNECTOR : D-04

D-04 (GR)

47

38

42

39

44 45 46

43

35

37

36

34

33

40 41

32

31

D-04 HARNESS CONNECTOR:
HARNESS SIDE

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-75

DTC 44: SRS Warning Light Drive Circuit System Fault 2

.

CIRCUIT OPERATION

• Power for the SRS warning light is supplied from 

the ignition switch (IG1) circuit.

• The SRS warning light illuminates when the igni-

tion switch is turned to the "ON" position and 
goes out after approximately seven seconds if 
there is not a malfunction in the SRS system.

.

AC204592

SRS Warning Light Drive Circuit

AB

ACX01478 AG

CONNECTOR: E-08

E-08 (Y)

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-76

DTC SET CONDITIONS
This DTC is set under one of the following cases 
while the SRS-ECU is monitoring the warning light 
drive circuit:

• When a short circuit occurs in the warning light 

drive circuit.

• When a malfunction is detected in the output 

transistor inside the SRS-ECU.

However, if the vehicle condition returns to normal, 
DTC 44 will be automatically erased, and the SRS 
warning light will go out.

.

TROUBLESHOOTING HINTS

• Damaged wiring harnesses or connectors

• Malfunction of the SRS-ECU

.

DIAGNOSIS

Required Special Tool:

• MB991502: Scan Tool (MUT-ll)

STEP 1. Check the SRS warning light drive circuit system. 
(Refer to 

P.52Bb-3

.)

Q: Is the SRS warning light drive circuit normal?

YES : Erase the diagnostic trouble code memory, and check 

the diagnostic trouble code. If DTC 43 sets, replace 
the SRS-ECU. (Refer to 

P.52Ba-31

.) Then go to Step 

2.

STEP 2. Recheck for diagnostic trouble code.
Q: Is DTC 44 set?

YES : There is no action to be taken.
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

.)