Mitsubishi Outlander (2003+). Manual — part 381

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-123

DIAGNOSIS PROCEDURE

STEP 1. Check the passenger's seat belt
pre-tensioner. (Check whether the diagnosis
code is reset.)
(1) Disconnect the negative battery terminal.

(2) Disconnect passenger's seat belt pre-tensioner

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

(3) Connect special tool dummy resistor (MB991865)

to special tool resistor harness (MB991884).

(4) Connect special tool (MB991884) to the D-43

harness side connector.

(5) Connect the negative battery terminal.

(6) Erase diagnosis code memory, and then check

the diagnosis code.

Q: Is diagnosis code 69 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 at the SRS-ECU
connector C-114.

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

(2) Disconnect passenger's seat belt pre-tensioner

connector D-29. Use a flat-tipped screwdriver to
pull out the locking button at the harness side

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

MB991884
MB991885

AC300975AD

MB991865
(Dummy resistor : 3

Ω)

MB991884
(Resistor
harness)

D-29 Harness side connector

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

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-124

connector, and then disconnect the connector.

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 C-114 harness

side connector terminals 27, 28 and body earth.

OK: Open circuit

Q: Is the check result normal?

YES :

Erase the diagnosis code memory, and

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

P.52B-178

). Then go to Step 4 .

NO :

Go to Step 3.

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 short circuit to

power supply 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. than go to Step 4.

AC201663

34 35 36 37 38 39 40 41 42

25 26 27 28 29 30 31 32 33

2122

23 24

AG

C-114 Harness side
connector (rear view)

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)

AC308785

Connector: D-44

AF

Harness side

D-44 (B)

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-125

STEP 4. Check whether the diagnosis code is
reset.

Q: Is diagnosis code 69 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

).

Code No.71: Side air bag module (squib) (RH) 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
(RH) wire shorted to the other.

PROBABLE CAUSES

•

Improper engaged connector or defective short
spring*

•

Short between the side air bag module (RH)
(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).
Therefore, if connector C-114 or D-40 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)
(RH)

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

AC301796

Side Air Bag Module (RH) (Squib) Circuit

AB

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-126

DIAGNOSIS PROCEDURE

STEP 1. MUT-II/III diagnosis code

CAUTION

To prevent damage to MUT-II, always turn the
ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting MUT-II.
(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 (RH) connector
D-40 (Check whether the diagnosis code is
reset.)
(1) Disconnect the negative battery terminal.

(2) Disconnect connectors C-114 and D-40, 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 71 out put?

YES :

Go to Step 4.

NO :

The procedure is complete. It is assumed
that diagnosis code 71 set as connector
C-114 or D-40 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-40

AM

D-40 (R)

2 1

Harness side
connector
(front view)