Mitsubishi Outlander GS45X. Manual — part 1468
SRS AIR BAG DIAGNOSIS
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-367
STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the occupant classifica-
tion-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the passenger seat cushion frame assembly
(Refer to GROUP 52A, Front seat assembly
).
NO : There is an intermittent malfunction such as poor
engaged connector(s) or open circuit (Refer to
GROUP 00, How to Cope with Intermittent
Malfunction
).
DTC B1B8E: Driver Seat Slide Sensor Short (Power Supply Side) Circuit
D7G52M031A00
AC701825
HALL IC
Seat Slide Sensor Circuit
OCCUPANT
CLASSIFICATION-
ECU
FRONT SEAT
ASSEMBLY (RH)
SEAT SLIDE
SENSOR
AB
SRS AIR BAG DIAGNOSIS
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-368
CAUTION
If DTC B1B8E is set in the occupant classifica-
tion-ECU, always diagnose the CAN main bus
lines.
.
CIRCUIT OPERATION
• The seat slide sensor sets the current value Hi or
Low determined by the seat position.
• The occupant classification determines the seat
position according to the current value from the
seat slide sensor.
.
DTC SET CONDITIONS
This DTC is set if there is short-circuited to the power
supply between the input terminals of the seat slide
sensor.
.
TROUBLESHOOTING HINTS
• Damaged wiring harnesses or connectors
• Short to the power supply in the seat slide sensor
harness
• Malfunction of the seat slide sensor
• Malfunction of the occupant classification-ECU
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: M.U.T.-III USB Cable
• MB991910: M.U.T.-III Main Harness A (Vehicles with
CAN communication system)
AC901079 AO
Connectors: D-27, D-34-2
D-34-2
D-27 (GR)
SRS AIR BAG DIAGNOSIS
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-369
STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the
."
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?
YES : Go to Step 2.
NO : Repair the CAN bus line (Refer to GROUP 54C,
).
STEP 2. Recheck for diagnostic trouble code.
Check again if the DTC is set.
(1) Erase the DTC.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Go to Step 3.
NO : There is an intermittent malfunction such as poor
engaged connector(s) or open circuit (Refer to
GROUP 00, How to Cope with Intermittent
Malfunction
).
ZC501967
AC404789
AC701411AB
MB991824
MB991827
MB991910
Data link
connector
SRS AIR BAG DIAGNOSIS
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-370
STEP 3. Check the seat slide sensor circuit. Measure the
voltage at the occupant classification-ECU connector
D-34-2.
(1) Disconnect occupant classification connector-ECU
connector D-34-2.
(2) Disconnect seat slide sensor connector D-27.
(3) Turn the ignition switch to the "ON" position.
CAUTION
Do not insert a test probe into the terminal from its front
side directly, as the connector contact pressure may be
weakened.
(4) Measure the voltage between D-34-2 harness side
connector terminals 27, 29 and body ground.
Voltage should measure 1 volt or less.
Q: Is the measured voltage within the specified range?
YES : Go to Step 5.
NO : Go to Step 4.
STEP 4. Check the harness wires for short circuit to power
supply between the occupant classification-ECU
connector D-34-2 (terminal No.27 and 29) and seat slide
sensor connector D-27 (terminal No.2 and 1).
Q: Are the harness wires between occupant
classification-ECU connector D-34-2 (terminal No.27
and 29) and seat slide sensor connector D-27 (terminal
No.2 and 1) in good condition?
YES : Go to Step 5.
NO : Repair the harness wires between the occupant
classification-ECU connector D-34-2 and seat slide
sensor connector D-27. Then go to Step 5.
STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the occupant classifica-
tion-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC B1B8E set?
YES : Replace the driver seat cushion frame assembly
(Refer to GROUP 52A, Front Seat Assembly
). Then go to Step 6.
NO : The procedure is complete.
AC608813
D-34-2 Harness side
connector (rear view)
CF
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