Mitsubishi Outlander (2013+). Manual — part 615

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-111

disconnected. If the negative battery terminal is
connected, disconnect it.

AC905015

A

AC

Lock lever

(2) While pushing the part "A" indicated in the figure

of the harness side connector, turn the lock lever
to the direction of the arrow to release the lock
lever, and disconnect the SRS-ECU 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) Take the following measurements at the backside

of the hazard indicator assembly side connector
(harness side).

• Continuity between LP line and body earth

OK: No continuity

Q: Is the check result normal?

YES :

Go to Step 6

NO :

Repair the wiring harnesses LP line
between the hazard indicator assembly
connector and the body earth.

STEP 6. Check whether the diagnosis code is
reset.

Q: Is the diagnosis code No. B1647 set?

YES :

Replace SRS-ECU (Refer to

P.52B-129

).

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use

Troubleshooting/Inspection Service Points

−

How to Cope with Intermittent Malfunction ).

Code No. B1648 Passenger’s air bag ON indicator lamp (open circuit)

CAUTION

If the diagnosis code B1489 is set in the
SRS-ECU, be sure to diagnose the CAN bus line

OPERATION

• Power for the passenger’s air bag ON indicator

lamp is supplied from the fusible link (2).

• The passenger’s air bag ON indicator lamp illumi-

nates when the ignition switch is turned to the
"ON" position and goes out after approximately 6
to 8 seconds if there is not a malfunction in the
SRS system.

TROUBLE JUDGEMENT

This code will be set if an open circuit has occurred
in the wiring harness between the passenger’s air
bag ON indicator lamp and the SRS-ECU.

PROBABLE CAUSES

• Damaged wiring harnesses or connectors

• Malfunction of the SRS-ECU

• Malfunction of the passenger’s air bag ON indica-

tor lamp

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the CAN bus line (Refer to GROUP
54C

− Troubleshooting ).

STEP 2. Check whether the diagnosis code is
reset.
(1) Connect the negative battery terminal.
(2) After erasing the diagnosis code memory, check

the diagnosis code again.

(3) Disconnect the negative battery terminal.

Q: Is the diagnosis code No. B1648 set?

YES :

Go to Step 3.

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use

Troubleshooting/Inspection Service Points

−

How to Cope with Intermittent Malfunction ).

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-112

STEP 3. Check the passenger’s air bag ON
indicator lamp.
It is checked whether passenger’s air bag ON indica-
tor lamp is normal (Refer to

P.52B-152

).

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Replace hazard indicator assembly (Refer
to GROUP 52A

− Instrument Panel

Assembly ).

STEP 4. Resistance measurement at the
SRS-ECU connector and the hazard indicator
assembly connector.
(1) Check that the negative battery terminal is

disconnected. If the negative battery terminal is
connected, disconnect it.

AC905015

A

AC

Lock lever

(2) While pushing the part "A" indicated in the figure

of the harness side connector, turn the lock lever
to the direction of the arrow to release the lock
lever, and disconnect the SRS-ECU connector.

(3) Disconnect the hazard indicator assembly

connector.

(4) Take the measurements below at the SRS-ECU

and hazard indicator assembly wiring harness

side connectors.

• Continuity ONLP line between SRS-ECU con-

nector and hazard indicator assembly con-
nector

OK: Continuity (less than 2

Ω)

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair the wiring harnesses ONLP line
between the SRS-ECU connector and the
hazard indicator assembly connector.

STEP 5. Measure the voltage at the centre panel
assembly connector.
(1) Disconnect the hazard indicator assembly

connector.

(2) Connect the negative battery terminal.
(3) Ignition switch: ON
(4) Measure the voltage between the hazard

indicator assembly harness side connector and
the body earth.

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the wiring harness IG+ line between
the ETACS-ECU connector and the hazard
indicator assembly connector.

STEP 6. Check whether the diagnosis code is
reset.

Q: Is the diagnosis code No. B1648 set?

YES :

Replace SRS-ECU (Refer to

P.52B-129

).

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use

Troubleshooting/Inspection Service Points

−

How to Cope with Intermittent Malfunction ).

Code No. B1699: SRS-ECU collective deployment

CAUTION

If diagnosis code B1699 is set in the SRS-ECU,
always diagnose the CAN main bus line.

TROUBLE JUDGMENT

This code is set when the air bags have deployed
simultaneously. If this code is set before the air bags
have deployed, an internal failure may have occurred
in the SRS-ECU.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Malfunction of the SRS-ECU

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-113

Code No. U0100 Engine CAN timeout

CAUTION

• If diagnosis code No.U0100 is set in the

SRS-ECU, diagnose the CAN main bus line.

• Whenever the ECU is replaced, ensure that

the input and output signal circuits are nor-
mal.

TROUBLE JUDGEMENT

If signal from the engine-ECU cannot be received for
500 milliseconds or more, the SRS-ECU sets diag-
nosis code No. U0100.

PROBABLE CAUSES

• Malfunction of the engine-ECU

• Malfunction of the SRS-ECU

• Malfunction of the CAN bus

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use the M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES :

Go to Step 2

NO :

Repair the CAN bus line (Refer to GROUP
54C

− Troubleshooting ). On completion, go

to Step 6.

STEP 2. Check the M.U.T.-III Diagnosis code for
other systems
Check that the engine-ECU set a diagnosis code.

Q: Is the diagnosis code set?

YES :

Diagnose the engine-ECU. Refer to

GROUP 13A, Troubleshooting .

NO :

Go to Step 3

STEP 3. Check the M.U.T.-III Diagnosis code for
other systems
Check if the diagnosis code No. U0100 is set to
ETACS-ECU.

Q: Is the diagnosis code set?

YES :

Go to Step 4

NO :

Go to Step 5

STEP 4. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set to the
SRS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF)

position to "ON" position.

(3) On completion, check that the diagnosis code is

reset.

Q: Is the diagnosis code set?

YES :

Replace the engine-ECU. After replacing

the ECU, carry out the CAN bus
diagnostics. Then go to Step 6.

NO :

A poor connection, open circuit or other
intermittent malfunction is present in the
CAN bus lines between the engine-ECU
and the SRS-ECU (Refer to GROUP 00,
How to Use Troubleshooting/Inspection
Service Points

− How to Cope with

Intermittent Malfunctions ).

STEP 5. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set to the
SRS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF)

position to "ON" position.

(3) On completion, check that the diagnosis code is

not reset.

Q: Is the diagnosis code set?

YES :

Replace the SRS-ECU. After replacing the

ECU, carry out the CAN bus diagnostics.
Then go to Step 6.

NO :

A poor connection, open circuit or other
intermittent malfunction is present in the
CAN bus lines between the engine-ECU
and the SRS-ECU (Refer to GROUP 00,
How to Use Troubleshooting/Inspection
Service Points

− How to Cope with

Intermittent Malfunctions ).

STEP 6. Check whether the diagnosis code is
reset.
Recheck if the diagnosis code is set to the
SRS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF)

position to "ON" position.

(3) On completion, check that the diagnosis code is

reset.

Q: Is the diagnosis code set?

YES :

Return to Step 1.

NO :

The procedure is complete.

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-114

CODE NO. U0141 ETACS CAN timeout

CAUTION

• If the diagnosis code No. U0141 is set, diag-

nose the CAN bus lines.

• When replacing the ECU, always check that

the SRS circuit is normal.

FUNCTION

If the signal from ETACS-ECU cannot be received,
the SRS-ECU sets the diagnosis code No. U0141.

TROUBLE JUDGEMENT

Because of the CAN-B bus circuit malfunction, if
SRS-ECU becomes unable to perform the normal
data transmission, SRS-ECU determines that an
abnormality is present.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of SRS-ECU

• Malfunction of the ETACS-ECU

Code No. U1190: No receive fault detect signal

CAUTION

• If the diagnosis code No. U1190 is set, diag-

nose the CAN bus lines.

• When replacing the ECU, always check that

the SRS circuit is normal.

TROUBLE JUDGEMENT

ETACS-ECU sends the diagnosis code (U code)
detection permission or prohibition signal to each
ECU connected to the CAN-C-Mid bus line. If the
SRS-ECU cannot receive the diagnosis code (U
code) detection permission or prohibition signal for 5
seconds after turning the ignition switch to the ON
position, diagnosis code U1190 will be set.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of SRS-ECU

• Malfunction of the ETACS-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use the M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES :

Go to Step 2

NO :

Repair the CAN bus line (Refer to GROUP
54C

− Troubleshooting ).

STEP 2. M.U.T.-III other system diagnosis code
Check again if the diagnosis code is set to the
ETACS-ECU.

Q: Is the diagnosis code set?

YES :

Diagnose the ETACS-ECU (Refer to

GROUP 54A, Troubleshooting ).

NO :

Go to Step 3

STEP 3. Diagnosis code recheck
Check again if the diagnosis code is set to the
SRS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the LOCK (OFF)

position to the ON position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the ETACS-ECU. After replacing

the ECU, carry out the CAN bus
diagnostics. Then go to Step 4.

NO :

A poor connection, open circuit or other
intermittent malfunction in the CAN bus line
between the ETACS-ECU and the
SRS-ECU. (Refer to GROUP 00

− How to

Use Troubleshooting/Inspection Service
Points - How to Cope with Intermittent
Malfunction .)

STEP 4. Diagnosis code recheck
Check again if the diagnosis code is set to the
SRS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the LOCK (OFF)

position to the ON position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis code set?