Mitsubishi Outlander (2003+). Manual — part 388

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-151

(3) Check for continuity between C-114 harness side

connector terminals 21, 22 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
86 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.21
and 22) and side air bag module (LH)
connector D-08 (terminal No.1 and 2). Then
go to Step 3.

STEP 3. Check whether the diagnosis code is
reset.

Q: Is diagnosis code 86 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.89: Side impact sensor (RH) communication error Code No.96: Side impact sensor (RH)
communication impossible

CONSTANT
VOLTAGE CIRCUIT

ANALOG
G SENSOR

INTERFACE
CIRCUIT

MICROCOMPUTER

SIDE IMPACT
SENSOR (RH)

SRS-ECU

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

AC301791

Side Impact Sensor (RH) Circuit

AB

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-152

OPERATION
The side impact sensor includes an analog G sensor
and CPU, etc. The CPU monitors the analog G
sensor output signal. If the CPU judges that the side
air bags should be deployed, it sends a fire signal to
the SRS-ECU to deploy the side air bags. Besides
that, the CPU diagnoses the internal components of
the side impact sensor. If a malfunction occurs, it
requests the SRS-ECU to set a diagnosis code.

DIAGNOSIS CODE SET CONDITIONS
These diagnosis codes are set if communication
between the side impact sensor (RH) and the
SRS-ECU is not possible or faulty.

PROBABLE CAUSES

•

Damaged wiring harnesses or connectors

•

Malfunction of the side impact sensor (RH)

•

Malfunction of the SRS-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check the side impact sensor (RH).
(MUT-II/III diagnosis code)
(1) Disconnect the negative battery terminal.
(2) Replace the side impact sensor (RH) with the

side impact sensor (LH).

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

diagnosis code.

Q: Is diagnosis code 79 or 93 out put?

YES :

Replace the side impact sensor (RH) with a

new one (Refer to

P.52B-186

). Go to Step 3.

NO :

Go to Step 2.

STEP 2. Check the harness wires for open circuit
or short circuit between SRS-ECU connector
C-114 (terminal No.40 and 42) and side impact
sensor (RH) connector D-41 (terminal No.1 and
2).

NOTE: If any harness wires between SRS-ECU
connector C-114 and side impact sensor (RH)
connector D-41 are damaged, repair or replace it.
Then go to Step 3.

Q: Is the check result normal.

YES :

Erase the diagnosis code memory, and

check the diagnosis code. If diagnosis code
89 or 96 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.40
and 42) and side impact sensor (RH)
connector D-41 (terminal No.1 and 2). Then
go to Step 3.

STEP 3. Check whether the diagnosis code is
reset.

Q: Is diagnosis code 89 or 96 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

AC201282

Connector: D-41

D-41

Front seat belt

Front seat

AH

1

2

Harness side
connector
(front view)

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-153

Code No.91: Side impact sensor (LH) voltage error

OPERATION
The side impact sensor includes an analog G sensor
and CPU, etc. The CPU monitors the analog G
sensor output signal. If the CPU judges that the side
air bags should be deployed, it sends a fire signal to
the SRS-ECU to deploy the side air bags. Besides
that, the CPU diagnoses the internal components of
the side impact sensor. If a malfunction occurs, it
requests the SRS-ECU to set a diagnosis code.

DIAGNOSIS CODE SET CONDITIONS
This diagnosis code will set when the power supply
voltage to the side impact sensor (LH) remains less
than a predetermined value for 5 seconds. However,
if the system returns to normal condition, code
number 91 will be erased automatically and the SRS
warning lamp will go out.

PROBABLE CAUSES

•

Damaged wiring harness or connectors

•

Malfunction of the side air bag module (LH)
(squib)

•

Malfunction of the SRS-ECU

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

CONSTANT
VOLTAGE CIRCUIT

CPU

ANALOG
G SENSOR

INTERFACE
CIRCUIT

MICROCOMPUTER

SIDE IMPACT
SENSOR (LH)

SRS-ECU

Side Impact Sensor(LH) Power Supply Circuit

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-154

DIAGNOSIS PROCEDURE

STEP 1. Measure the voltage at the side impact
sensor (LH) connector D-27.
(1) Disconnect the negative battery terminal.

(2) Disconnect side impact sensor (LH) connector

D-27, and measure at the wiring harness side.

(3) Connect the negative battery terminal.
(4) 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.
(5) Measure the voltage between D-27 harness side

connector terminal 2 and the earth.

OK: 9 V or more

Q: Is the check result normal?

YES :

Replace the side impact sensor (LH) (Refer

to

P.52B-186

). Then go to Step 3.

NO :

Go to Step 2.

STEP 2. Check the harness wires for open circuit
or short circuit between SRS-ECU connector
C-114 (terminal No.34 and 36) and side impact
sensor (LH) connector D-27 (terminal No.1 and
2).

AC201281

Connector: D-27

D-27

Front seat belt

Front seat

AF

AC201627

1 2

AM

D-27 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

AC201281

Connector: D-27

D-27

Front seat belt

Front seat

AE

1

2

Harness side
connector
(front view)