Mitsubishi Montero (2002-2004). Manual - part 800

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-69

STEP 4. Check the harness for open circuit between 
ignition switch connector D-204 (terminal No.2) and 
combination meter D-03 (terminal No.62), and between 
combination meter D-04 (terminal No.44) and SRS-ECU 
connector E-08 (terminal No.8).
NOTE: After inspecting intermediate connectors D-04, D-03, 
junction block connectors D-210, D-208 inspect the wiring har-
ness. If intermediate connectors D-04, D-03, junction block 
connectors D-210, D-208 are damaged, repair or replace them. 
Refer to GROUP 00E, Harness Connector Inspection 

P.00E-2

. 

Then go to Step 5 .

AC204231AD

CONNECTORS : D-03, 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

D-03 (GR)

D-03 HARNESS CONNECTOR:
HARNESS SIDE

67

58

62

59

64 65 66

63

55

57

56

54

53

60 61

52

51

AC204257

CONNECTORS : D-208, D-210

AB

D-210

D-208

D-208 HARNESS CONNECTOR:
COMPONENT SIDE

D-210 HARNESS CONNECTOR:
COMPONENT SIDE

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) DIAGNOSIS

52Bb-70

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

08 (terminal No.8) and the ignition switch connector D-
204 (terminal No.2) in good condition?
YES : Replace the combination meter. (Refer to GROUP 

54A, Combination Meter Assembly 

P.54A-65

.)

NO :  Repair the harness wires between SRS-ECU 

connector E-08 and the ignition switch connector D-
204. Then go to Step 6.

STEP 5. Check the harness for open circuit between SRS-
ECU connector E-08 (terminal No.7) and ground.
Q: Is the harness wire between SRS-ECU connector E-08 

(terminal No.7) and ground in good condition?
YES : Go to Step 6.
NO :  Repair the harness wires between SRS-ECU 

connector E-08 and ground. Then go to Step 6.

ACX01478AH

CONNECTOR: E-08

E-08 (Y)

HARNESS
CONNECTOR:
HARNESS SIDE

AC204226AE

CLOCK SPRING

CONNECTOR: D-204

D-204

HARNESS 
CONNECTOR:
COMPONENT 
SIDE

2
5

6

3

4

1

ACX01478AH

CONNECTOR: E-08

E-08 (Y)

HARNESS
CONNECTOR:
HARNESS SIDE

ACX01508

GROUND

ABS-ECU

AD

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-71

STEP 6. 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

.) 

DTC 43: SRS Warning Light Drive Circuit System Fault 1 (Light does not Switch Off.)

AC204592

SRS Warning Light Drive Circuit

AB

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-72

.

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

.

DTC SET CONDITIONS
This DTC is set when a short to ground occurs in the 
harness between the SRS warning light and SRS-
ECU while SRS-ECU is monitoring the light and the 
light is ON. However, if the vehicle condition returns 
to normal, DTC 43 will be automatically erased, and 
the SRS warning light will go out. 

.

TROUBLESHOOTING HINTS

• Damaged wiring harnesses or connectors

• Malfunction of the SRS-ECU

• Malfunction of the combination meter

.

DIAGNOSIS

Required Special Tool:

• MB991502: Scan Tool (MUT-ll)

STEP 1. Check the SRS-ECU connector E-08.
(1) Disconnect SRS-ECU connector E-08.
(2) Check the short bar for the warning light inside the harness 

connector for improper contact or deformation.

Q: Is SRS-ECU connectors E-08 good condition? 

YES : Then go to Step 2.
NO :  Repair or replace the SRS-ECU connector E-08. 

Then go to Step 4.

AC204230

CONNECTOR : D-04

AD

D-04 (GR)

ACX01478 AG

CONNECTOR: E-08

E-08 (Y)

ACX01478 AG

CONNECTOR: E-08

E-08 (Y)

AC106809AF

E-08 HARNESS CONNECTOR: 
COMPONENT SIDE

TERMINAL

SHORT BAR