Mitsubishi Montero (2002-2004). Manual — part 814
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-125
DIAGNOSIS
Required Special Tools:
• MB991502: Scan Tool (MUT-II)
• MB991865: Dummy resister
• MB991866: Resister harness
STEP 1. 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 harness side
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 76 set?
YES : Go to Step 2.
NO : Replace the seat back assembly of the front seat
(RH). (Refer to GROUP 52A, Front Seat
Then go to Step 4.
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-126
STEP 2. Check the harness for short circuit to ground
between SRS-ECU and the side-airbag module (RH).
(1) Disconnect SRS-ECU connector E-07.
(2) Disconnect side-airbag module (RH) connector F-21.
CAUTION
Do not insert a test probe into the terminal from its front
side directly as the connector contact pressure may be
weakened.
(3) Check for continuity between E-07 harness connector
terminals 23, 24 and body ground.
It should be open circuit.
Q: Does continuity exist?
YES : Erase the diagnostic trouble code memory, and check
the diagnostic trouble code. If DTC 76 sets, replace
the SRS-ECU. (Refer to
.) Then go to Step
NO : Go to Step 3.
ACX01478AI
CONNECTOR: E-07
E-07 (Y)
ACX01649
X0942CA
AD
CONNECTOR: F-21
F-21 (R)
34 35 36 37 38 39 40 41 42
25 26 27 28 29 30 31 32 33
21 22
23 24
AC100384
E-07 HARNESS CONNECTOR:
HARNESS SIDE
AI
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-127
STEP 3. Check the harness wires for short circuit to
ground between SRS-ECU connector E-07 (terminal 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 (terminal No.23 and 24) and side-airbag module (RH)
connector F-21 (terminal No.1 and 2) in good condition?
YES : Go to Step 4.
NO : Repair the harness wires between SRS-ECU
connector E-07 and side-airbag module (RH)
connector F-21. Then go to Step 4.
STEP 4. Recheck for diagnostic trouble code.
Q: Is DTC 76 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
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-128
DTC 79: Left Hand Side-Airbag Module (Squib) System Fault 5 for Power Pupply Circuit
DTC 93: Left Hand Side-Airbag Module (Squib) System Fault 6 for Communication System
.
AC204437AB
Side Impact Sensor (LH) Power Supply Circuit
ACX01478AI
CONNECTOR: E-07
E-07 (Y)
AC204603AB
CONNECTOR: E-19
FLOOR
CONSOLE
E-19
AC204128
AB
CONNECTOR: F-13
FRONT SEAT
SIDE IMPACT
SENSOR
F-13 (Y)
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