Mitsubishi Outlander (2003+). Manual - part 385

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-139

NOTE: 

 After inspecting intermediate connector D-31 <L.H. 
drive vehicles> or D-44 <R.H. drive vehicles> inspect 
the wiring harness. If the intermediate connector 
D-31 <L.H. drive vehicles> or D-44 <R.H. drive 
vehicles> is damaged, repair or replace it. Then go to 
Step 3. If any harness wires between SRS-ECU 
connector C-114 and side impact sensor (LH) 
connector D-27 are damaged, repair or replace it.

Q: Is the check result normal?

YES : 

Erase the diagnosis code memory, and 

check the diagnosis code. If diagnosis code 
79 or 93 sets, replace the SRS-ECU (Refer 
to 

P.52B-178

). Then go to Step 3.

NO : 

Repair the harness wires between 
SRS-ECU connector C-114 (terminal No.34 
and 36) and side impact sensor (LH) 
connector D-27 (terminal No.2 and 1). Then 
go to Step 3.

STEP 3. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code 79 or 93 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

).

AC301408

Connector: D-31 <LHD>

AE

11

1

4

3

10
16

13

12

5 6

2

14

8

15

9

7

AC308785

Connector: D-44 <RHD>

AJ

Harness side

D-44 (B)

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-140

Code No.81: Side air bag module (squib) (LH) system (short-circuited between terminals of the squib 
circuit)

OPERATION

•

The SRS-ECU judges how severe a collision is 
by detecting signals from the left and right side 
impact sensors. If the impact is over a 
predetermined level, the SRS-ECU outputs an 
ignition signal. At this time, if the side air bag 
safing G-sensor is on, the SRS side air bag will 
inflate.

•

The ignition signal is input to the side air bag 
module to inflate the side air bag.

DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set if one side air bag squib 
(LH) wire shorted to the other.

PROBABLE CAUSES

•

Improper engaged connector or defective short 
spring*

•

Short circuit between the side air bag module 
(LH) (squib) circuit terminals

•

Damaged connector(s)

•

Malfunction of the SRS-ECU

NOTE:  *: The squib circuit connectors integrate a 
"short" spring (which prevents the air bag from 
deploying unintentionally due to static electricity by 
shorting the positive wire to the earth wire in the 
squib circuit when the connectors are disconnected). 
(Refer to 

P.52B-3

). Therefore, if connector C-114 or 

D-08 is damaged or improperly engaged, the short 
spring may not be released when the connector is 
connected.

AIR BAG DRIVE 
CIRCUIT

CONNECTOR
LOCK
SWITCH

NOTE

CONNECTOR
COUPLED: ON
CONNECTOR
UNCOUPLED: OFF

CONNECTOR
LOCK
SWITCH

MICROCOMPUTER

SRS-ECU

SIDE AIR BAG 
MODULE 
(SQUIB)
(LH)

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       

AC301797

Side Air Bag Module (LH) (Squib) Circuit

AB

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-141

DIAGNOSIS PROCEDURE

STEP 1. MUT-II/III diagnosis code

CAUTION

To prevent damage to MUT-II/III, always turn the 
ignition switch to the "LOCK" (OFF) position 
before connecting or disconnecting MUT-II/III.
(1) Turn the ignition switch to the "ON" position.
(2) Check if the diagnosis code is set.
(3) Turn the ignition switch to the "LOOK" (OFF) 

position.

Q: Is diagnosis code 34 set?

YES : 

Go to Step 2.

NO : 

Go to Step 3.

STEP 2. Connector check: SRS-ECU connector 
C-114

Q: Is the connector correctly engaged?

YES : 

Go to Step 3.

NO : 

Engage the connector correctly. Then go to 
Step 6.

STEP 3. Connector check: SRS-ECU connector 
C-114 and side air bag module (LH) connector 
D-08 (Check whether the diagnosis code is 
reset.)
(1) Disconnect the negative battery terminal.

(2) Disconnect connectors C-114 and D-08, and then 

reconnect them.

(3) Connect the negative battery terminal.
(4) Erase the diagnosis code memory, and check the 

diagnosis code.

Q: Is diagnosis code 81 out put?

YES : 

Go to Step 4.

NO : 

The procedure is complete. It is assumed 
that diagnosis code 81 set as connector 
C-114 or D-08 was engaged improperly.

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

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

AC202027

Connector: D-08

AO

D-08 (R)

2 1

Harness side
connector
(front view)

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-142

STEP 4. Check the side air bag module (LH). 
(Check whether the diagnosis code is reset.)
(1) Disconnect the negative battery terminal.

(2) Disconnect the side air bag module (LH) 

connector D-08.

(3) Connect special tool dummy resistor (MB991865) 

to special tool resistor harness (MB991866).

CAUTION

Do not insert a test probe into the terminal from 
its front side directly as the connector contact 
pressure may be weakened.
(4) Insert special tool (MB991866) into the D-08 

harness side connector by backprobing.

(5) Connect the negative battery terminal.
(6) Erase diagnosis code memory, and check the 

diagnosis code.

Q: Is diagnosis code 81 set?

YES : 

Go to Step 5.

NO : 

Replace the seat back assembly of the front 
seat (LH) (Refer to GROUP 52A 

−

 Front 

Seat 

P.52A-33

). Then go to Step 6.

STEP 5. Measure the resistance at the SRS-ECU 
connector C-114.

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

DANGER

To prevents the air bag from deploying 
unintentionally, disconnect the side air bag 
module (LH) connector D-08 to short the 
squib circuit.

(2) Disconnect left hand side air bag module (LH) 

connector D-08.

CAUTION

Insert an insulator such as a cable tie to a depth 
of 4mm or more, otherwise the short spring will 
not be released.

AC202027

Connector: D-08

AO

D-08 (R)

2 1

Harness side
connector
(front view)

AC301039AC

MB991865 (Dummy
resistor : 3 

Ω)

D-08 Harness side
connector

D-08 Side air bag
module (LH) connector

MB991866
(Resistor harness)

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

AC202027

Connector: D-08

AO

D-08 (R)

2 1

Harness side
connector
(front view)

AC301046AB

A

A

C-114 Harness side
connector (front view)

Terminal

Short spring

4 mm or more

Section
A - A

Cable tie