Mitsubishi Outlander (2013+). Manual - part 601

 

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Mitsubishi Outlander (2013+). Manual - part 601

 

 

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-55

lever, and disconnect the SRS-ECU connector.

DANGER

To release the connector short spring in the 
following operations, disconnect this 
side-airbag module connector, and keep the 
squib circuit shorted.

AC706606

AC

Locking button

Side-airbag module
connector

(3) Disconnect the left side-airbag module connector, 

unlock the connector by sliding the locking button 
to the direction of the arrow as shown in the 
figure, and then disconnect the connector.

AC905468AS

A

A

Harness side
connector (front view)

Section
A - A

Cable tie

Short spring

4 mm or more

Terminal

CAUTION

The short spring may not be released due to the 
insufficient insertion. Therefore, insert the insu-
lator for 4 mm or more.
(4) Insert an insulator (width: 3 mm, thickness: 0.5 

mm) such as cable tie between the SLS-, SLS+ 
line and the short spring, and then release the 
short spring.

CAUTION

Do not insert a test probe directly into the termi-
nal of left side-airbag module harness side con-
nector from the connector front side as the 
connector contact pressure may be weakened.
(5) Take the measurements below at the SRS-ECU 

and left impact sensor harness side connectors. 

• Continuity SLS- line between SRS-ECU con-

nector and left side-airbag module connector

• Continuity SLS+ line between SRS-ECU con-

nector and left side-airbag module connector

OK: Continuity (less than 2 

Ω)

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the wiring harness SLS-, SLS+ line 
between the left side-airbag module 
connector and the SRS-ECU connector.

STEP 5. Check whether the diagnosis code is 
reset.

Q: Is the diagnosis code No. B1431 set?

YES : 

Replace SRS-ECU (Refer to 

P.52B-129

).

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

Code No.B1432 Left side-airbag module (squib) system (shorted to squib circuit earth)

CAUTION

If the diagnosis code B1432 is set to SRS-ECU, 
be sure to diagnose the CAN bus line.

OPERATION

In case of side collision, when the impact exceeding 
the threshold is applied to the vehicle, and when the 
impact is simultaneously detected (turned ON) by the 
side impact sensor as well as by the analogue 
G-sensor in SRS-ECU, the electric current is sup-
plied from SRS-ECU to the side-airbag module 
(squib) of impacted side.

TROUBLE JUDGEMENT

The code is set when the input terminal of SRS-ECU 
side-airbag module (squib) is shorted to earth.

PROBABLE CAUSES

• Damaged wiring harness and connectors

• Side-airbag module (squib) harness shorted to 

earth

• Malfunction of SRS-ECU

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-56

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the CAN bus line (Refer to GROUP 
54C 

− Troubleshooting ).

STEP 2. Check whether the diagnosis code is 
reset.
(1) Connect the negative battery terminal.
(2) After erasing the diagnosis code memory, check 

the diagnosis code again.

(3) Disconnect the negative battery terminal.

Q: Is the diagnosis code No. B1432 set?

YES : 

Go to Step 3.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

STEP 3. Diagnosis check by dummy resistor 
connection.
(1) Check that the negative battery terminal is 

disconnected. If the negative battery terminal is 
connected, disconnect it.

AC706606

AC

Locking button

Side-airbag module
connector

(2) Disconnect the left side-airbag module connector, 

unlock the connector by sliding the locking button 
to the direction of the arrow as shown in the 

figure, and then disconnect the connector.

AC507310BT

Side-airbag 
module (LH) connector

Harness side 
connector

MB991865
(Dummy resistor: 3    )

MB991866 

(Resistor harness)

(3) Connect special tool dummy resistor (MB991865) 

to special tool resistor harness (MB991866).

CAUTION

Do not insert a probe directly into the terminal 
from the connector front side as the connector 
contact pressure may be weakened.
(4) Insert the resistor harness probe from the back of 

left side-airbag module harness side connector.

(5) Connect the negative battery terminal.
(6) After erasing the diagnosis code memory, check 

the diagnosis code again.

(7) Disconnect the negative battery terminal.

Q: Is the diagnosis code No. B1432 set?

YES : 

Go to Step 4.

NO : 

Replace the front seatback pad and frame 
assembly (Refer to 

P.52B-142

).

STEP 4. Resistance measurement at the 
SRS-ECU connector.
(1) Check that the negative battery terminal is 

disconnected. If the negative battery terminal is 
connected, disconnect it.

AC905015

A

AC

Lock lever

(2) 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 

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-57

lever, and disconnect the SRS-ECU connector.

DANGER

To release the connector short spring in the 
following operations, disconnect this 
side-airbag module connector, and keep the 
squib circuit shorted.

AC706606

AC

Locking button

Side-airbag module
connector

(3) Disconnect the left side-airbag module connector, 

unlock the connector by sliding the locking button 
to the direction of the arrow as shown in the 
figure, and then disconnect the connector.

AC905468AS

A

A

Harness side
connector (front view)

Section
A - A

Cable tie

Short spring

4 mm or more

Terminal

CAUTION

The short spring may not be released due to the 
insufficient insertion. Therefore, insert the insu-
lator for 4 mm or more.
(4) Insert an insulator (width: 3 mm, thickness: 0.5 

mm) such as cable tie between the SLS-, SLS+ 
line and the short spring, and then release the 
short spring.

(5) Take the measurements below at the SRS-ECU 

harness side connector.

• Continuity between SLS-, SLS+ line and body 

earth

OK: No continuity

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the wiring harness SLS-, SLS+ line 
between the SRS-ECU connector and the 
left side-airbag module connector.

STEP 5. Check whether the diagnosis code is 
reset.

Q: Is the diagnosis code No. B1432 set?

YES : 

Replace SRS-ECU (Refer to 

P.52B-129

).

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

Code No.B1433 Left side-airbag module (squib) system (shorted to squib circuit power supply)

CAUTION

If the diagnosis code B1433 is set to SRS-ECU, 
be sure to diagnose the CAN bus line.

OPERATION

In case of side collision, when the impact exceeding 
the threshold is applied to the vehicle, and when the 
impact is simultaneously detected (turned ON) by the 
side impact sensor as well as by the analogue 
G-sensor in SRS-ECU, the electric current is sup-
plied from SRS-ECU to the side-airbag module 
(squib) of impacted side.

TROUBLE JUDGEMENT

The code is set when the input terminal of SRS-ECU 
side-airbag module (squib) is shorted to power sup-
ply.

PROBABLE CAUSES

• Damaged wiring harness and connectors

• Side-airbag module (squib) harness shorted to 

power supply

• Malfunction of SRS-ECU

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-58

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the CAN bus line (Refer to GROUP 
54C 

− Troubleshooting ).

STEP 2. Check whether the diagnosis code is 
reset.
(1) Connect the negative battery terminal.
(2) After erasing the diagnosis code memory, check 

the diagnosis code again.

(3) Disconnect the negative battery terminal.

Q: Is the diagnosis code No. B1433 set?

YES : 

Go to Step 3.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

STEP 3. Diagnosis check by dummy resistor 
connection.
(1) Check that the negative battery terminal is 

disconnected. If the negative battery terminal is 
connected, disconnect it.

AC706606

AC

Locking button

Side-airbag module
connector

(2) Disconnect the left side-airbag module connector, 

unlock the connector by sliding the locking button 
to the direction of the arrow as shown in the 

figure, and then disconnect the connector.

AC507310BT

Side-airbag 
module (LH) connector

Harness side 
connector

MB991865
(Dummy resistor: 3    )

MB991866 

(Resistor harness)

(3) Connect special tool dummy resistor (MB991865) 

to special tool resistor harness (MB991866).

CAUTION

Do not insert a probe directly into the terminal 
from the connector front side as the connector 
contact pressure may be weakened.
(4) Insert the resistor harness probe from the back of 

left side-airbag module harness side connector.

(5) Connect the negative battery terminal.
(6) After erasing the diagnosis code memory, check 

the diagnosis code again.

(7) Disconnect the negative battery terminal.

Q: Is the diagnosis code No. B1433 set?

YES : 

Go to Step 4.

NO : 

Replace the front seatback pad and frame 
assembly (Refer to 

P.52B-142

).

STEP 4. Voltage measurement at the SRS-ECU 
connector.
(1) Check that the negative battery terminal is 

disconnected. If the negative battery terminal is 
connected, disconnect it.

AC905015

A

AC

Lock lever

(2) 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 

 

 

 

 

 

 

 

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