Mitsubishi Montero (2004+). Manual — part 1209
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-171
STEP 2. Check SRS-ECU connector E-07.
Q: Is the connector correctly engaged?
YES : Go to Step 3.
NO : Engage the connector correctly. Then go to Step 7.
STEP 3. Check SRS-ECU connector E-07 and side-airbag
module (LH) connector F-15. (Using scan tool MB991958,
read the diagnostic trouble code).
(1) Disconnect the negative battery terminal.
(2) Disconnection connectors E-07 and F-15, and then
reconnect them.
(3) Connect the negative battery terminal.
(4) Erase diagnostic trouble code memory, and then check the
diagnostic trouble code.
Q: Is DTC 81 set?
YES : Go to Step 4.
NO : The procedure is complete. (It is assumed that DTC
81 set as connector E-07 or F-15 was engaged
improperly).
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)
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)
AC204635 AD
CONNECTOR: F-15
F-15 (R)
1 2
HARNESS SIDE
CONNECTOR
(REAR VIEW)
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-172
STEP 4. Check the side-airbag module (LH). (Using scan
tool MB991958, read the diagnostic trouble code).
(1) Disconnect the negative battery terminal.
(2) Disconnect the left hand side-airbag (LH) connector F-15.
(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-15 harness
connector by backprobing.
(5) Connect the negative battery terminal.
(6) Erase diagnostic trouble code memory, and check the
diagnostic trouble code.
Q: Is DTC 81 set?
YES : Go to Step 5.
NO : Replace the seat back assembly of the front seat (LH)
(Refer to GROUP 52A, Front Seat
). Then
go to Step 7.
AC204635 AD
CONNECTOR: F-15
F-15 (R)
1 2
HARNESS SIDE
CONNECTOR
(REAR VIEW)
AC006042 AX
MB991866
(RESISTOR HARNESS)
F-15 HARNESS
CONNECTOR
F-15 SIDE-AIRBAG
MODULE (LH) CONNECTOR
MB991865 (DUMMY
RESISTOR: 3
Ω)
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-173
STEP 5. Check the side-airbag module (LH) 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 (LH) connec-
tor F-15 to short the squib circuit.
(2) Disconnect side-airbag module connector F-15.
CAUTION
Insert an insulator such as a cable tie to a depth of 4mm
(0.16 inch) or more, otherwise the short spring 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 21, 22 and the short spring to
release the short spring.
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 terminals 21 and 22.
It should be open circuit.
Q: Is the circuit normal?
YES : Erase the diagnostic trouble code memory, and check
the diagnostic trouble code. If DTC 81 sets, replace
the SRS-ECU (Refer to
).
NO : Go to Step 6.
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)
AC204635 AD
CONNECTOR: F-15
F-15 (R)
1 2
HARNESS SIDE
CONNECTOR
(REAR VIEW)
AC100397AP
A
A
E-07 HARNESS SIDE
CONNECTOR (REAR VIEW)
TERMINAL
SHORT SPRING
4 mm (0.16 inch) OR MORE
SECTION
A - A
CABLE TIE
34 35 36 37 38 39 40 41 42
25 26 27 28 29 30 31 32 33
21 22
23 24
AC100386
E-07 HARNESS SIDE
CONNECTOR (REAR VIEW)
AO
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-174
STEP 6. Check the harness wires for short circuit between
SRS-ECU connector E-07 (terminal No.21and 22) and
side-airbag module (LH) connector F-15 (terminal No.1 and
2).
Q: Are the harness wires between SRS-ECU connector
E-07 (terminal No.21and 22) and side-airbag module
(LH) connector F-15 (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 (LH)
connector F-15. Then go to Step 7.
STEP 7. Recheck for diagnostic trouble code.
Q: Is DTC 81 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)
AC204635 AD
CONNECTOR: F-15
F-15 (R)
1 2
HARNESS SIDE
CONNECTOR
(REAR VIEW)
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