Mitsubishi Outlander (2013+). Manual — part 734

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-72

OSS-ECU connector, and measure at the wiring
harness side.

(2) Turn the ignition switch to the LOCK (OFF)

position.

CAUTION

When measuring the resistance, disconnect the
negative battery terminal. For details refer to

P.54C-5

.

(3) Ensure that the negative battery terminal is

disconnected.

(4) Continuity between joint connector (CAN-LO)

terminal No.10 and OSS-ECU connector terminal
No.1

OK: Continuity (2

Ω or less)

(5) Continuity between joint connector (CAN-LO)

terminal No.21 and OSS-ECU connector terminal

No.14

OK: Continuity (2

Ω or less)

CAUTION

Strictly observe the specified wiring harness
repair procedure. For details refer to

P.54C-5

.

Q: Is the check result normal?

YES :

<All the resistances measure 2

Ω or less>

Power supply to the OSS-ECU may be
suspected. Diagnose the OSS. Refer to
GROUP 42B

− Troubleshooting .

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between joint connector (CAN-LO) and the
OSS-ECU connector.

Diagnosis Item 20: Diagnose when the M.U.T.-III cannot receive the data sent by CAN box unit
<vehicles with MMCS>.

CAUTION

When servicing a CAN bus line, earth yourself by
touching a metal object such as an unpainted
water pipe. If you fail to do, a component con-
nected to the CAN bus line may be broken.

FUNCTION

The diagnostic result demonstrates that "the
M.U.T.-III cannot receive the sent data from the CAN
box unit" when the M.U.T.-III checks the periodically
sent data from each ECU and cannot receive the
CAN box unit data only.

TROUBLE JUDGEMENT CONDITIONS

M.U.T.-III judges the trouble when the periodically
sent data from CAN box unit cannot be received.

PROBABLE CAUSES

• Damaged harness wires and connectors

• Power supply circuit malfunction of the CAN box

unit

• Malfunction of the CAN box unit

DIAGNOSIS PROCEDURE

STEP 1. Connector check: joint connector
(CAN-LO) and CAN box unit connector

CAUTION

The strand end of the twist wire should be within
10 cm from the connector. For details refer to

P.54C-5

.

When checking the joint connector, ensure that its
wiring harness side and its short pins are not dam-
aged.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector. Replace the
joint connector as necessary.

STEP 2. Resistance measurement at joint
connector (CAN-LO) and CAN box unit
connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54C-5

.

CAUTION

The test wiring harness should be used. For
details refer to

P.54C-5

.

(1) Disconnect joint connector (CAN-LO) and the

CAN box unit connector, and measure at the
wiring harness side.

(2) Turn the ignition switch to the LOCK (OFF)

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-73

position.

CAUTION

When measuring the resistance, disconnect the
negative battery terminal. For details refer to

P.54C-5

.

(3) Ensure that the negative battery terminal is

disconnected.

(4) Continuity between joint connector (CAN-LO)

terminal No.3 and CAN box unit connector
terminal No.14

OK: Continuity (2

Ω or less)

(5) Continuity between joint connector (CAN-LO)

terminal No.14 and CAN box unit connector

terminal No.13

OK: Continuity (2

Ω or less)

CAUTION

Strictly observe the specified wiring harness
repair procedure. For details refer to

P.54C-5

.

Q: Is the check result normal?

YES :

<All the resistances measure 2

Ω or less>

Power supply to the CAN box unit may be
suspected. Diagnose the MMCS.

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between joint connector (CAN-LO) and the
CAN box unit connector.

Diagnosis Item 21: Diagnose when the M.U.T.-III cannot receive the data sent by radio and CD player
<vehicles with radio and CD player>.

CAUTION

When servicing a CAN bus line, earth yourself by
touching a metal object such as an unpainted
water pipe. If you fail to do, a component con-
nected to the CAN bus line may be broken.

FUNCTION

The diagnostic result demonstrates that "the
M.U.T.-III cannot receive the sent data from the radio
and CD player" when the M.U.T.-III checks the peri-
odically sent data from each ECU and cannot receive
the radio and CD player data only.

TROUBLE JUDGEMENT CONDITIONS

M.U.T.-III judges the trouble when the periodically
sent data from radio and CD player cannot be
received.

PROBABLE CAUSES

• Damaged harness wires and connectors

• Power supply circuit malfunction of the radio and

CD player

• Malfunction of the radio and CD player

DIAGNOSIS PROCEDURE

STEP 1. Connector check: joint connector
(CAN-LO) and radio and CD player connector

CAUTION

The strand end of the twist wire should be within
10 cm from the connector. For details refer to

P.54C-5

.

When checking the joint connector, ensure that its
wiring harness side and its short pins are not dam-
aged.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector. Replace the
joint connector as necessary.

STEP 2. Resistance measurement at joint
connector (CAN-LO) and radio and CD player
connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54C-5

.

CAUTION

The test wiring harness should be used. For
details refer to

P.54C-5

.

(1) Disconnect joint connector (CAN-LO) and the

radio and CD player connector, and measure at
the wiring harness side.

(2) Turn the ignition switch to the LOCK (OFF)

position.

CAUTION

When measuring the resistance, disconnect the

negative battery terminal. For details refer to

P.54C-5

.

(3) Ensure that the negative battery terminal is

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-74

disconnected.

(4) Continuity between joint connector (CAN-LO)

terminal No.7 and radio and CD player connector
terminal No.3

OK: Continuity (2

Ω or less)

(5) Continuity between joint connector (CAN-LO)

terminal No.18 and radio and CD player
connector terminal No.13

OK: Continuity (2

Ω or less)

CAUTION

Strictly observe the specified wiring harness
repair procedure. For details refer to

P.54C-5

.

Q: Is the check result normal?

YES :

<All the resistances measure 2

Ω or less>

Power supply to the radio and CD player
may be suspected. Diagnose the radio and
CD player. Refer to GROUP 54A Radio and
CD Player

− Troubleshooting .

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between joint connector (CAN-LO) and the
radio and CD player connector.

Diagnosis Item 22: Diagnose when the M.U.T.-III cannot receive the data sent by corner sensor/back
sensor-ECU <vehicles with reversing sensor system>.

CAUTION

When servicing a CAN bus line, earth yourself by
touching a metal object such as an unpainted
water pipe. If you fail to do, a component con-
nected to the CAN bus line may be broken.

FUNCTION

The diagnostic result demonstrates that "the
M.U.T.-III cannot receive the sent data from the cor-
ner sensor/back sensor-ECU" when the M.U.T.-III
checks the periodically sent data from each ECU and
cannot receive the corner sensor/back sensor-ECU
data only.

TROUBLE JUDGEMENT CONDITIONS

M.U.T.-III judges the trouble when the periodically
sent data from corner sensor/back sensor-ECU can-
not be received.

PROBABLE CAUSES

• Damaged harness wires and connectors

• Power supply circuit malfunction of the corner

sensor/back sensor-ECU

• Malfunction of the corner sensor/back sen-

sor-ECU

DIAGNOSIS PROCEDURE

STEP 1. Connector check: joint connector
(CAN-LO) and corner sensor/back sensor-ECU
connector

CAUTION

The strand end of the twist wire should be within
10 cm from the connector. For details refer to

P.54C-5

.

When checking the joint connector, ensure that its
wiring harness side and its short pins are not dam-
aged.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector. Replace the
joint connector as necessary.

STEP 2. Resistance measurement at joint
connector (CAN-LO) and corner sensor/back
sensor-ECU connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54C-5

.

CAUTION

The test wiring harness should be used. For
details refer to

P.54C-5

.

(1) Disconnect joint connector (CAN-LO) and the

corner sensor/back sensor-ECU connector, and
measure at the wiring harness side.

(2) Turn the ignition switch to the LOCK (OFF)

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-75

position.

CAUTION

When measuring the resistance, disconnect the
negative battery terminal. For details refer to

P.54C-5

.

(3) Ensure that the negative battery terminal is

disconnected.

(4) Continuity between joint connector (CAN-LO)

terminal No.4 and corner sensor/back
sensor-ECU connector terminal No.19

OK: Continuity (2

Ω or less)

(5) Continuity between joint connector (CAN-LO)

terminal No.15 and corner sensor/back

sensor-ECU connector terminal No.20

OK: Continuity (2

Ω or less)

CAUTION

Strictly observe the specified wiring harness
repair procedure. For details refer to

P.54C-5

.

Q: Is the check result normal?

YES :

<All the resistances measure 2

Ω or less>

Power supply to the corner sensor/back
sensor-ECU may be suspected. Diagnose
the reversing sensor. Refer to GROUP 54A
Reversing Sensor

− Troubleshooting .

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between joint connector (CAN-LO) and the
corner sensor/back sensor-ECU connector.

Diagnosis Item 23: Diagnose when the M.U.T.-III cannot receive the data sent by A/C-ECU.

CAUTION

When servicing a CAN bus line, earth yourself by
touching a metal object such as an unpainted
water pipe. If you fail to do, a component con-
nected to the CAN bus line may be broken.

FUNCTION

The diagnostic result demonstrates that "the
M.U.T.-III cannot receive the sent data from the
A/C-ECU" when the M.U.T.-III checks the periodically
sent data from each ECU and cannot receive the
A/C-ECU data only.

TROUBLE JUDGEMENT CONDITIONS

M.U.T.-III judges the trouble when the periodically
sent data from A/C-ECU cannot be received.

PROBABLE CAUSES

• Damaged harness wires and connectors

• Power supply circuit malfunction of the A/C-ECU

• Malfunction of the A/C-ECU

DIAGNOSIS PROCEDURE

STEP 1. Connector check: joint connector
(CAN-LO) and A/C-ECU connector

CAUTION

The strand end of the twist wire should be within
10 cm from the connector. For details refer to

P.54C-5

.

When checking the joint connector, ensure that its
wiring harness side and its short pins are not dam-
aged.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector. Replace the
joint connector as necessary.

STEP 2. Resistance measurement at joint
connector (CAN-LO) and A/C-ECU connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54C-5

.

CAUTION

The test wiring harness should be used. For
details refer to

P.54C-5

.

(1) Disconnect joint connector (CAN-LO) and the

A/C-ECU connector, and measure at the wiring
harness side.

(2) Turn the ignition switch to the LOCK (OFF)

position.

CAUTION

When measuring the resistance, disconnect the

negative battery terminal. For details refer to

P.54C-5

.

(3) Ensure that the negative battery terminal is