Mitsubishi Montero (2002-2004). Manual — part 806
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-93
STEP 2. Check the passenger's air bag module circuit at
the SRS-ECU connector E-08.
(1) Disconnect SRS-ECU connector E-08.
DANGER
Unclip passenger’s air bag module connector D-11.To
prevents the air bag from deploying unintentionally,
disconnect the passenger’s air bag module connec-
tor D-11 to short the squib circuit.
(2) Disconnect the passenger's air bag module connector D-11.
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-08 harness connector
terminals 9, 10 and body ground.
There should be open circuit.
Q: Does continuity exist?
YES : Erase the diagnostic trouble code memory, and check
the diagnostic trouble code. If DTC 65 sets, replace
the SRS-ECU. (Refer to
.) Then go to Step
NO : Go to Step 3.
ACX01478 AG
CONNECTOR: E-08
E-08 (Y)
AC204125
CONNECTOR: D-11
AC
D-11 (R)
GLOVE BOX
STRIKER
AC006258
13 14 15 16 17 18 19 20
5 6 7 8 9 10 11 12
1 2
3 4
E-08 HARNESS CONNECTOR: HARNESS SIDE
AI
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-94
STEP 3. Check the harness wires for short circuit to
ground between SRS-ECU connector E-08 (terminal No.9
and 10) and passenger's air bag module connector D-11
(terminal No.1 and 2).
Q: Are the harness wires between SRS-ECU connector E-
08 (terminal No.9 and 10) and passenger's air bag
module connector D-11 (terminal No.1 and 2) in good
condition?
YES : Go to Step 4.
NO : Repair the harness wires between SRS-ECU
connector E-08 and passenger's air bag module
connector D-11. Then go to Step 4.
STEP 4. Recheck for diagnostic trouble code.
Q: Is DTC 65 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
ACX01478AH
CONNECTOR: E-08
E-08 (Y)
HARNESS
CONNECTOR:
HARNESS SIDE
AC204125
CONNECTOR: D-11
AD
D-11 (R)
GLOVE BOX
STRIKER
1 2
HARNESS
CONNECTOR:
HARNESS SIDE
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-95
DTC 66: Driver's Seat Belt Pre-Tensioner (Squib) System Fault for Power Supply Circuit (Short-Circuit
to Power Supply)
.
AC102677
Driver's Seat Belt Pre-Tensioner (Squib)
AB
ACX01478AI
CONNECTOR: E-07
E-07 (Y)
AC204603AB
CONNECTOR: E-19
FLOOR
CONSOLE
E-19
AC204126
AB
CONNECTOR: F-27
F-27 (R)
CENTER
PILLAR
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-96
CIRCUIT OPERATION
The SRS-ECU judges how severe a collision is by
detecting signals from the front impact sensors and
the front air bag analog G-sensor. If the impact is
over a predetermined level, the SRS-ECU outputs an
ignition signal. At this time, if the front air bag safing
G-sensor is on, the pre-tensioner will deploy.
.
DTC SET CONDITIONS
This DTC is set if there is abnormal resistance
between the input terminals of the driver's seat belt
pre-tensioner (squib).
.
TROUBLESHOOTING HITS
• Damaged wiring harnesses or connectors
• Short to the power supply in the driver's seat belt
pretensioner (squib) harness
• Malfunction of the SRS-ECU
.
DIAGNOSIS
Required Special Tools:
• MB991502: Scan Tool (MUT-ll)
• MB991865: Dummy resister
• MB991866: Resister harness
STEP 1. Check the driver's seat belt pre-tensioner.
(1) Disconnect the negative battery terminal.
(2) Disconnect the driver's seat belt pretensioner connector F-
27.
(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 diagnostic trouble code memory, and then check the
diagnostic trouble code.
Q: Is DTC 66 set?
YES : Go to Step 2.
NO : Replace the driver's seat belt pre-tensioner. (Refer to
AC204126
AB
CONNECTOR: F-27
F-27 (R)
CENTER
PILLAR
AC006042 AY
MB991866
(RESISTOR HARNESS)
F-27 HARNESS
CONNECTOR
MB991865 (DUMMY
RESISTOR: 3
Ω
)
F-27 SEAT BELT
PRE-TENSIONER
CONNECTOR (DRIVER'S SIDE)
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