Mitsubishi Outlander XL. Manual - part 903

 

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Mitsubishi Outlander XL. Manual - part 903

 

 

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-143

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 passenger’s seat belt switch.

ZC6009450001

Tongue

Buckle

D-32 Seat belt  
switch connector

ZC500788

D-32 Seat belt  
switch connector

0061

Disconnect passenger’s seat belt switch connector D-32. Then
check continuity between the switch terminals.

52B-144

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

ZC500788

D-32 Seat belt  
switch connector

0062

Item

Tester
connection

Specified
condition

Fastened seat belt

1 - Ground

No continuity

2 - Ground

No continuity

1 - 2

Continuity

 (Less

than 2 Ω)

Unfastened seat belt

1 - Ground

No continuity

2 - Ground

No continuity

1 - 2

No continuity

Q:Is passenger’s seat belt switch in good condition?

YES:

 Go to Step 4.

NO:

 Replace inner seat belt. (Refer to GROUP 52A, Front

Seat Belt P.52A-22.)

STEP 4. Check the passenger’s seat belt switch circuit D-32.
Measure the resistance at SRS-ECU connector C-27.

(1)

Disconnect passenger’s seat belt switch connector D-32.

ZC6009450002

Tongue

Buckle

D-32 Seat belt  
switch connector

(2)

Install the passenger’s seat belt to the passenger’s seat belt
switch.

(3)

Disconnect SRS-ECU connector C-27 and measure at the
harness side.

ZC600210

A

Lock lever

0000

(4)

While  pushing  the  part  "A"  indicated  in  the  figure  of  the
harness side connector, turn the lock lever to the direction of
the arrow to release the lock lever, and disconnect the C-27
SRS-ECU connector.

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-145

SRS AIR BAG DIAGNOSIS

ZC5007880063

C-27 Harness side 
connector (front view)

(5)

Measure the resistance between terminal 55, 58 and body
ground.
It should be an open circuit.

 

ZC500788

C-27 Harness side 
connector (front view)

0064

(6)

Measure the resistance between terminal 55 and terminal 58.
Resistance should be less than 2 ohms.

 

ZC6009450003

Tongue

Buckle

D-32 Seat belt  
switch connector

(7)

Remove the passenger’s seat belt from the passenger’s seat
belt switch.

(8)

Disconnect SRS-ECU connector C-27 and measure at the
harness side.

ZC600210

A

Lock lever

0000

(9)

While  pushing  the  part  "A"  indicated  in  the  figure  of  the
harness side connector, turn the lock lever to the direction of
the arrow to release the lock lever, and disconnect the C-27
SRS-ECU connector.

 

ZC5007880063

C-27 Harness side 
connector (front view)

(10)

Measure the resistance between terminal 55, 58 and body
ground.
It should be an open circuit.

 

52B-146

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

 

 

 

 

 

 

 

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