Mitsubishi Outlander GS45X. Manual - part 1467

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-363

STEP 7. 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 driver seat cushion frame assembly

(Refer to GROUP 52A, Front Seat Assembly

P.52A-17

). Then go to Step 8.

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

P.00-15

STEP 8. 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

P.52A-17

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

P.00-15

SRS AIR BAG DIAGNOSIS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-364

DTC B1B8D: Driver Seat Slide Sensor Open Circuit

CAUTION

If DTC B1B8D 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-ECU determines the

seat position according to the current value from
the seat slide sensor.

DTC SET CONDITIONS

• This DTC is set if there is abnormal resistance

between the input terminals of the seat slide sen-
sor. The most likely causes for this code to be set
are the followings:

• Open circuit in the seat slide sensor or har-

ness

TROUBLESHOOTING HINTS

• Open circuit in the seat slide sensor circuit

• Disengaged seat slide sensor connector

• Improper connector contact

• 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)

D7G52M031A00

AC701825

HALL IC

Seat Slide Sensor Circuit

OCCUPANT
CLASSIFICATION-
ECU

FRONT SEAT
ASSEMBLY (RH)

SEAT SLIDE
SENSOR

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-365

• 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)

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

scan tool

P.52B-28

(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,

Diagnosis

P.54C-17

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

P.00-15

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector

SRS AIR BAG DIAGNOSIS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-366

STEP 3. Check the harness for open circuit between
occupant classification-ECU connector D-34-2 (terminal
No.27 and 29) and the seat slide sensor connector D-27
(terminal No.2 and 1).
(1) Disconnect occupant classification-ECU connector D-34-2

and seat slide sensor connector D-27.

CAUTION

Do not insert a test probe into the terminal from its front
side directly, as the connector contact pressure may be
weakened.
(2) Check for continuity between the following terminals. It

should be less than 2 ohms.

• Occupant classification-ECU connector D-34-2 (terminal

No.27) and the seat slide sensor connector D-27 (termi-
nal No.2)

• Occupant classification-ECU connector D-34-2 (terminal

No.29) and the seat slide sensor connector D-27 (termi-
nal No.1)

Q: Does continuity exist?

YES : Go to Step 4.
NO : Repair the harness wires between occupant

classification-ECU connector D-34-2 and seat slide
sensor connector D-27.

STEP 4. 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 B1B8D set?

YES : Replace the driver seat cushion frame assembly

(Refer to GROUP 52A, Front seat assembly

P.52A-17

). Then go to Step 5.

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

P.00-15

AC608812

D-27 Harness side
connector (rear view)

D-34-2 Harness side
connector (

rear

view)

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