Mitsubishi Montero (2004+). Manual — part 1192

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-103

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 .
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-76

).

NO : Repair the harness wires between SRS-ECU

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

AC204231AG

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 SIDE
CONNECTOR (REAR VIEW)

D-03 (GR)

D-03 HARNESS SIDE
CONNECTOR (REAR VIEW)

67

58

62

59

64 65 66

63

55

57

56

54

53

60 61

52

51

AC204257

CONNECTORS : D-208, D-210

AH

D-210

D-208

D-208 HARNESS SIDE
CONNECTOR (FRONT VIEW)

D-210 HARNESS SIDE
CONNECTOR (FRONT VIEW)

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)

52B-104

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.

STEP 6. Recheck for diagnostic trouble code.
Q: Is DTC 43 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

).

ACX01478AM

CONNECTOR: E-08

E-08 (Y)

HARNESS SIDE
CONNECTOR
(REAR VIEW)

ACX01508

GROUND

ABS-ECU

AD

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-105

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

.

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.

.

AC204592

SRS Warning Light Drive Circuit

AB

AC204230

CONNECTOR : D-04

AD

D-04 (GR)

ACX01478 AG

CONNECTOR: E-08

E-08 (Y)

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-106

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:

• 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. 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.

ACX01478AM

CONNECTOR: E-08

E-08 (Y)

HARNESS SIDE
CONNECTOR
(REAR VIEW)

AC106809AJ

E-08 HARNESS SIDE
CONNECTOR (FRONT VIEW)

TERMINAL

SHORT BAR