Mitsubishi Outlander (2003+). Manual — part 383

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-131

(2) Measure the resistance between the following

terminals.

•

SRS-ECU connector C-114 terminal No.23
and the side air bag module (RH) connector
D-40 terminal No.2

•

SRS-ECU connector C-114 terminal No.24
and the side air bag module (RH) connector
D-40 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
72 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.23
and 24) and side air bag module (RH)
connector D-40 (terminal No.2 and 1). Then
go to Step 3.

STEP 3. Check whether the diagnosis code is
reset.

Q: Is diagnosis code 72 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

).

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-132

Code No.75: Side air bag module (squib) (RH) system (short-circuited to the power supply)

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 the side air bag squib
(RH) wire(s) are short-circuited to the power supply.

PROBABLE CAUSES

•

Damaged wiring harnesses or connectors

•

Short to the power supply in the side air bag
module (RH) (squib) harness

•

Malfunction of the SRS-ECU

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-133

DIAGNOSIS PROCEDURE

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

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

connector D-40.

(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-40

harness side connector by backprobing.

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

diagnosis code.

Q: Is diagnosis code 75 set?

YES :

Go to Step 2.

NO :

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

−

Front

Seat

P.52A-33

). Then go to Step 3.

STEP 2. Measure the voltage 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 (RH) connector D-40 to short the
squib circuit.

(2) Disconnect side air bag module (RH) connector

D-40.

(3) Turn the ignition switch to the "ON" position.

CAUTION

Do not insert a test probe into the terminal from
its front side directly as the connector contact
pressure may be weakened.

AC202027

Connector: D-40

AM

D-40 (R)

2 1

Harness side
connector
(front view)

AC301039AB

MB991865 (Dummy
resistor : 3

Ω)

D-40 Harness side
connector

D-40 Side air bag
module (RH) 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-40

AM

D-40 (R)

2 1

Harness side
connector
(front view)

34 35 36 37 38 39 40 41 42

25 26 27 28 29 30 31 32 33

21 22

23 24

AC301044 AB

C-114 Harness side
connector (rear view)

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-134

(4) Measure the voltage between C-114 harness

side connector terminals 23 and 24 and body
earth.

OK: 0 V

Q: Is the check result normal?

YES :

Erase the diagnosis code memory, and

check the diagnosis code. If diagnosis code
75 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.23
and 24) and side air bag module (RH)
connector D-40 (terminal No.2 and 1). Then
go to Step 3.

STEP 3. Check whether the diagnosis code is
reset.

Q: Is diagnosis code 75 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.76: Side air bag module (squib) (RH) system (short-circuited to the earth)

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 the side air bag squib
(RH) wire(s) are short-circuited to the earth.

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