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