Mitsubishi Outlander (2003+). Manual - part 367

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-67

(6) Erase diagnosis code memory, and then check 

the diagnosis code.

Q: Is diagnosis code 29 set?

YES : 

Go to Step 2.

NO : 

Replace the passenger's seat belt 
pre-tensioner (Refer to 

P.52B-188

). Then 

go to Step 4.

STEP 2. Measure the resistance between 
SRS-ECU connector C-114 (terminal No.27 and 
28) and the passenger's seat belt pre-tensioner 
connector D-29 (terminal No.1 and 2).

(1) Disconnect SRS-ECU connector C-114 and 

passenger's seat belt pre-tensioner connector 

D-29. For connector D-29, use a flat-tipped 
screwdriver to pull out the locking button at the 
harness side connector, and then disconnect the 
connector.

(2) Connect D-29 harness side connector to special 

tool resistor harness (MB991884).

CAUTION

Do not insert a test probe into the terminal from 
its front side directly as the connector contact 
pressure may be weakened.
(3) Measure the resistance between the following 

terminals.

•

SRS-ECU connector C-114 terminal No.27 
and the special tool terminal No.2

•

SRS-ECU connector C-114 terminal No.28 
and the special tool terminal No.1

OK: Less than 2 

Ω

Q: Are the check results normal?

YES : 

Erase the diagnosis code memory, and 

check the diagnosis code. If diagnosis code 
29 sets, replace the SRS-ECU (Refer to 

P.52B-178

). Then go to Step 4     .

NO : 

Go to Step 3.

AC301661

Connector: C-114

AE

SRS-ECU

C-114 (Y)

Center lower
panel

Harness side
connector 
(front view)

40

23

24

41

32

42

33

31

29
38

39

30

37

28

21

22

35

26

36

27

34

25

AC308787

Connector: D-29

AE

1

2

Harness side

D-29 (B)

AC300147AE

Flat-tip screw
driver

Locking button

D-29 Driver's seat 
belt pre-tensioner 
connector

D-29 Harness side connector

AC201287AJ

D-29 

Harness side
connector

MB991884

34 35 36 37 38 39 40 41 42

25 26 27 28 29 30 31 32 33

21 22

23 24

2

1

AC300997AB

C-114 Harness
side connector
(rear view)

Special tool
MB991884

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-68

STEP 3. Connector check: SRS-ECU connector 
C-114, passenger’s seat belt pre-tensioner 
connector D-29 and intermediate connector D-44

Q: Is the check result normal?

YES : 

Check the harness wires for open circuit 

between SRS-ECU connector C-114 
(terminal No.27 and 28) and passenger’s 
seat belt pre-tensioner connector D-29 
(terminal No.2 and 1), and repair if 
necessary. Then go to Step 4.

NO : 

Repair or replace it. Then go to Step 4.

STEP 4. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code 29 set?

YES : 

Return to Step 1.

NO : 

The procedure is complete (If no 
malfunctions are found in all steps, an 
intermittent malfunction is suspected. Refer 
to GROUP 00 

−

 How to Use 

Troubleshooting/Inspection Service Points 

P.00-6

).

AC301661

Connector: C-114

AE

SRS-ECU

C-114 (Y)

Center lower
panel

Harness side
connector 
(front view)

40

23

24

41

32

42

33

31

29
38

39

30

37

28

21

22

35

26

36

27

34

25

AC308785

Connector: D-43

AG

Harness side

D-43 (B)

AC308785

Connector: D-44

AF

Harness side

D-44 (B)

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-69

Code No.34: SRS-ECU connector lock out of order

DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set if a poor connection at the 
SRS-ECU is detected. However, if the vehicle 
condition returns to normal, diagnosis code number 
34 will be automatically erased, and the SRS 
warning lamp will go out.

PROBABLE CAUSES

•

Damaged connectors

•

Malfunction of the SRS-ECU

DIAGNOSIS PROCEDURE

STEP 1. Connector check: SRS-ECU connector 
C-114 and C-115
(1) Disconnect SRS-ECU connectors C-114 and 

C-115.

(2) Check the connector lock switch terminal inside 

the harness side connector for improper contact 
or deformation.

Q: Are the SRS-ECU connector C-114 and C-115 in 

good condition.
YES : 

Erase the diagnosis code memory, and 

check the diagnosis code. If diagnosis code 
34 sets, replace the SRS-ECU (Refer to 

P.52B-178

). Then go to Step 2   .

NO : 

Repair or replace the SRS-ECU connector 
C-114 and C-115. Then go to Step 2.

STEP 2. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code 34 set?

YES : 

There is no action to be taken.

NO : 

The procedure is complete (If no 
malfunctions are found in all steps, an 
intermittent malfunction is suspected. Refer 
to GROUP 00 

−

 How to Use 

Troubleshooting/Inspection Service Points 

P.00-6

).

Code No.35: Ignition of the air bag completed

DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set after the air bag has 
deployed. If this diagnosis code is set before the air 
bag has deployed, the cause is probably a 
malfunction inside the SRS-ECU.

PROBABLE CAUSE
Malfunction of the SRS-ECU

DIAGNOSIS PROCEDURE
Replace the SRS-ECU. (Refer to 

P.52B-178

).

AC301661

Connectors: C-114, C-115

AF

SRS-ECU

C-114 (Y)

C-115 (Y)

Center lower
panel

AC301001AB

SRS-ECU Harness side
connector (front view)

Connector lock
switch terminal

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-70

Code No.41: Power supply voltage (IG1 (A) voltage) drops abnormally.

OPERATION

•

The SRS-ECU is powered from the ignition 
switch (IG1).

•

The SRS-ECU power is supplied from two 
circuits. Even if one circuit is shut off, the air bag 
can inflate.

IGNITION 
SWITCH (IG1)

SRS-ECU

POWER SOURCE
CIRCUIT

BACK-UP
CAPACITOR

D.C.-D.C.
CONVERTER

MICROCOMPUTER

CONNECTOR
LOCK
SWITCH

WARNING LAMP 
DRIVE CIRCUIT

NOTE

CONNECTOR
COUPLED: ON
CONNECTOR
UNCOUPLED: OFF

Wire colour code
B : Black     LG : Light green
G : Green     L : Blue      
W : White     Y : Yellow
SB : Sky blue     BR : Brown 
O : Orange     GR : Gray  
R : Red     P : Pink     V : Violet       

COMBINATION 
METER

AC301798

IG1 Power Supply Circuit System (Fuse No.2 Circuit)

AB