Mitsubishi Montero (2004+). Manual — part 1198

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-127

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 unintention-
ally, disconnect the passenger’s air bag module con-
nector 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 : Go to Step 3.
NO : Erase the diagnostic trouble code memory, and check

the diagnostic trouble code. If DTC 65 sets, replace
the SRS-ECU (Refer to

P.52B-215

). Then go to Step

4.

ACX01478AM

CONNECTOR: E-08

E-08 (Y)

HARNESS SIDE
CONNECTOR
(REAR VIEW)

AC204125

CONNECTOR: D-11

AE

D-11 (R)

GLOVE BOX
STRIKER

1 2

HARNESS SIDE
CONNECTOR
(REAR VIEW)

AC006258

13 14 15 16 17 18 19 20

5 6 7 8 9 10 11 12

1 2

3 4

E-08 HARNESS SIDE CONNECTOR (REAR VIEW)

AQ

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-128

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

P.00-6

).

ACX01478AM

CONNECTOR: E-08

E-08 (Y)

HARNESS SIDE
CONNECTOR
(REAR VIEW)

AC204125

CONNECTOR: D-11

AE

D-11 (R)

GLOVE BOX
STRIKER

1 2

HARNESS SIDE
CONNECTOR
(REAR VIEW)

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-129

DTC 66: Driver's Seat Belt Pre-Tensioner (Squib) System Fault for Power Supply Circuit (Short-Circuit
to Power Supply)

SEAT BELT
PRETENSIONER
(LH)

MICROCOMPUTER

AIR BAG DRIVE CIRCUIT

SRS-ECU

CONNECTOR
LOCK SWITCH

CONNECTOR
LOCK SWITCH

NOTE

: CONNECTOR
COUPLED: ON
CONNECTOR
UNCOUPLED: OFF

Driver's Seat Belt Pre-Tensioner (Squib)

ACX01478AI

CONNECTOR: E-07

E-07 (Y)

AC204603AB

CONNECTOR: E-19

FLOOR
CONSOLE

E-19

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-130

.

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:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B (Vehicles without

CAN communication system)

• MB991865: Dummy resister

• MB991866: Resister harness

AC204126

AB

CONNECTOR: F-27

F-27 (R)

CENTER
PILLAR