Mitsubishi Outlander XL. Manual - part 901

ZC600212

D-08 Intermediate  
connector (module side )  
(front view) 

A

A

4 mm or more

Terminal

Cable tie

Short 
spring

Section 
A - A

0001

(4)

Because the short spring is installed to the D-08 intermediate
connector (curtain air bag harness side), insert a cable tie [3
mm  (0.12  inch)  wide,  0.5  mm  (0.02  inch)  thick]  between
terminals 1, 2 and the short spring to release the short spring.

ZC5007880032

D-08 Intermediate connector 
(Curtain air bag harness side)  
(rear view) 

Do not insert a probe into the terminal from its front side
directly,  as  the  connector  contact  pressure  may  be
weakened.

(5)

Check  for  continuity  between  the  D-08  intermediate
connector (curtain air bag harness side) terminal No. 1, 2 and
the body ground.
It should be open circuit.

Q:Does continuity exist?

YES:

 Repair the wiring harness.

NO:

 Replace the curtain air bag module (RH) (Refer to P.

52B-341). Then go to Step 7.

STEP 7. Recheck for diagnostic trouble code.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

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 DTC B1B23 set?

YES:

 Replace SRS-ECU. (Refer to P.52B-326.)

NO:

 Intermittent Malfunction (Refer to GROUP 00, How to

Use Troubleshooting/Inspection Service Points - How to
Cope with Intermittent Malfunction P.00-15).

DTC B1B50: Seat Belt Switch (LH) Circuit (Ground Side) Shorted
DTC B1B51: Seat Belt Switch (LH) Circuit (Power Supply Side) Shorted

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-135

SRS AIR BAG DIAGNOSIS

DTC B1B52: Seat Belt Switch (LH) Circuit Open

M15204000994USA0000010000

SEAT BELT SWITCH 
(DRIVER'S SIDE)

SEAT BELT SWITCH 
(PASSENGER'S SIDE)

SRS-ECU

Seat belt Switch Circuit

ZC600876

Connector: C-27

C-27 (Y)

0025

ZC6008790021

Connector: D-28

D-28 (B)

 

If DTC B1B50, B1B51 or B1B52 are set in the SRS-
ECU, always diagnose the CAN main bus lines.

CIRCUIT OPERATION
The  SRS-ECU  determines  whether  the  seat  belt  is
fastened or not according to the connection location
of the seat belt switch in the seat buckle.

52B-136

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

DTC SET CONDITIONS
DTC  is  set  when  the  resistance  between  input
terminals of the seat belt switch in the SRS-ECU is
without the standard value.

TROUBLESHOOTING HINTS

｠

Malfunction of the seat belt switch

｠

Damaged wiring harnesses or connectors

｠

Malfunction of the SRS-ECU

DIAGNOSIS

Required Special Tools:

｠

MB991222: Probe

｠

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)

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958. Refer to "How to connect the
scan tool P.52B-31."

(2)

Connect scan tool MB991958 to the data link connector.

(3)

Turn the ignition switch to the "ON" position.

(4)

Diagnose the CAN bus line.

(5)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Is the CAN bus line found to be normal?

YES:

 Go to Step 3.

NO:

 Repair the CAN bus line (Refer to GROUP 54D,

Diagnosis P.54D-17).

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-137

SRS AIR BAG DIAGNOSIS

STEP 2. Recheck for diagnostic trouble code.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

Check again if the DTC is set.

(1)

Erase the DTC.

(2)

Turn the ignition switch to "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).

STEP 3. Check the driver’s seat belt switch.

ZC603628

Buckle

Tongue

D-28 Driver’s  
seat belt switch  
connector

0000

ZC500788

D-28 Driver’s seat belt  
switch connector

0057

Disconnect driver’s seat belt switch connector D-28. Then check
continuity between the switch terminals.

52B-138

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS