Mitsubishi Montero (2002-2004). Manual — part 811
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-113
STEP 3. Check SRS-ECU connector E-07 and side-airbag
module (RH) connector F-21.
(1) Disconnect the negative battery terminal.
(2) Disconnection connectors E-07 and F-21, and then
reconnect them.
(3) Connect the negative battery terminal.
(4) Erase the diagnostic trouble code memory, and check the
diagnostic trouble code.
Q: Is DTC 71 set?
YES : Go to Step 4.
NO : The procedure is complete. (It is assumed that DTC
71 set as connector E-07 or F-21 was engaged
improperly.)
ACX01478AI
CONNECTOR: E-07
E-07 (Y)
ACX01649
X0942CA
AD
CONNECTOR: F-21
F-21 (R)
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-114
STEP 4. Check the side-airbag module (RH).
(1) Disconnect the negative battery terminal.
(2) Disconnect the side-airbag module (RH) connector F-21.
(3) Connect special tool MB991865 to special tool MB991866.
CAUTION
Do not insert a test probe into the terminal from its front
side directly as the connector contact pressure may be
weakened.
(4) Insert special tool MB991866 into the F-21 harness
connector by backprobing.
(5) Connect the negative battery terminal.
(6) Erase the diagnostic trouble code memory, and check the
diagnostic trouble code.
Q: Is DTC 71 set?
YES : Go to Step 5.
NO : Replace the seat back assembly of the front seat
(RH). (Refer to GROUP 52A, Front Seat
Then go to Step 7.
ACX01649
X0942CA
AD
CONNECTOR: F-21
F-21 (R)
AC006042 AW
MB991866
(RESISTOR HARNESS)
F-21 HARNESS
CONNECTOR
F-21 SIDE-AIRBAG
MODULE (RH) CONNECTOR
MB991865 (DUMMY
RESISTOR: 3
Ω
)
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-115
STEP 5. Check the side-airbag module (RH) circuit at the
SRS-ECU connector E-07.
(1) Disconnect SRS-ECU connector E-07.
DANGER
To prevents the air bag from deploying unintention-
ally, disconnect the side-airbag module (RH) connec-
tor F-21 to short the squib circuit.
(2) Disconnect side-airbag module connector F-21.
CAUTION
Insert an insulator such as a cable tie to depth of 4mm
(0.16 inch) or more, otherwise the short bar will not cable
tie release.
(3) Insert a cable tie [3 mm (0.12 inch) wide, 0.5 mm (0.02 inch)
thick] between terminals 23, 24 and the short bar to release
the short bar.
CAUTION
Do not insert a test probe into the terminal from its front
side directly as the connector contact pressure may be
weakened.
(4) Check for continuity between E-07 harness connector
terminals 23 and 24.
It should be open circuit.
Q: Does continuity exist?
NO : Erase the diagnostic trouble code memory, and check
the diagnostic trouble code. If DTC 71 sets, replace
the SRS-ECU. (Refer to
.) Then go to Step
YES : Go to Step 6.
ACX01478AI
CONNECTOR: E-07
E-07 (Y)
ACX01649
X0942CA
AD
CONNECTOR: F-21
F-21 (R)
AC100396AI
A
A
E-07 HARNESS
CONNECTOR:
COMPONENT SIDE
TERMINAL
CABLE
TIE
SECT-
ION
A - A
4 mm (0.16 inch) OR MORE
SHORT BAR
34 35 36 37 38 39 40 41 42
25 26 27 28 29 30 31 32 33
21 22
23 24
AC100764
E-07 HARNESS
CONNECTOR:
HARNESS SIDE
AI
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-116
STEP 6. Check the harness wires for short circuit between
SRS-ECU connector E-07 (terminals No.23 and 24) and
side-airbag module (RH) connector F-21 (terminal No.1 and
2)
Q: Are the harness wires between SRS-ECU connector E-
07 (terminals No.23 and 24) and side-airbag module
(RH) connector F-21 (terminal No.1 and 2) in good
condition?
YES : Go to Step 7.
NO : Repair the harness wires between SRS-ECU
connector E-07 and side-airbag module connector F-
21. Then go to Step 7.
STEP 7. Recheck for diagnostic trouble code.
Q: Is DTC 71 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
ACX01478AJ
CONNECTOR: E-07
E-07 (Y)
34 35 36 37 38 39 40 41 42
25 26 27 28 29 30 31 32 33
21 22
23 24
HARNESS SIDE
CONNECTOR
(REAR VIEW)
ACX01649
X0942CA
AE
CONNECTOR: F-21
F-21 (R)
1 2
HARNESS
CONNECTOR:
HARNESS SIDE
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