Mitsubishi Montero (2002-2004). Manual — part 785

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-9

DIAGNOSIS

Required Special Tools:
MB991222: Probe

STEP 1. Check the front impact sensor.
(1) Measure the resistance between terminals and check

whether it is within the standard value.

Standard value: 820

± 82 Ω

(2) Check for continuity between the terminal and bracket.

There should be no continuity.

Q: Does the resistance meet the value above, and is there

continuity?
YES : Go to Step 2.
NO : Replace front impact sensor. (Refer to

P.52Ba-27

.)

AC204205AB

ACX00598AB

SRS AIR BAG DIAGNOSIS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-10

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).
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.

ACX01478 AG

CONNECTOR: E-08

E-08 (Y)

13 14 15 16 17 18 19 20

5 6 7 8 9 10 11 12

1 2

3 4

AC204767AB

E-08 HARNESS
CONNECTOR:
HARNESS SIDE

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

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-11

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.52Ba-31

.) Then go

to Step 6.

NO : Go to Step 5.

ACX01478AH

CONNECTOR: E-08

E-08 (Y)

HARNESS
CONNECTOR:
HARNESS SIDE

AC204229

CONNECTOR: A-23

AC

A-23 (Y)

HARNESS
CONNECTOR:
HARNESS SIDE

2

1

ACX01478 AG

CONNECTOR: E-08

E-08 (Y)

13 14 15 16 17 18 19 20

5 6 7 8 9 10 11 12

1 2

3 4

AC204768AB

E-08 HARNESS
CONNECTOR:
HARNESS SIDE

SRS AIR BAG DIAGNOSIS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS

52Bb-12

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-27 (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.

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

ACX01478AH

CONNECTOR: E-08

E-08 (Y)

HARNESS
CONNECTOR:
HARNESS SIDE

AC204228

CONNECTOR: A-30

AC

A-30 (Y)

HARNESS
CONNECTOR:
HARNESS SIDE

2

1