Mitsubishi Outlander XL. Manual - part 564

Q:Is the check result normal?

YES:

NO:

Go to Step 4.

STEP 4. Check the following connector:
Check the connectors below for improper engagement, terminal
damage or terminal drawn in the connector case.

｠

C-128 AWD-ECU connector

｠

D-113 electronic control coupling solenoid connector

｠

C-31 intermediate connector

Q:Are the connectors and terminals in good condition?

YES:

Go to Step 5.

NO:

Repair the connector(s) or terminal(s). Then go to

Step 10.

STEP 5. Wiring harness check
Check the wiring harness between the C-128 AWD-ECU
connector and the D-113 electronic control coupling solenoid
connector for damage or other problem.

Q:Is the wiring harness in good condition?

YES:

Go to Step 6.

NO:

Repair damage or other problem in the wiring harness.

Then go to Step 10.

STEP 6. Resistance measurement between electronic
control coupling solenoid connector terminals

ZC3052000001

D-119

Electronic
control coupling

Disconnect the D-119 connector, and measure the resistance
value between the connector terminals on the electronic control
coupling side.

Standard value: 2.2 - 4.0 ohm

Q:Is the measured resistance value within the standard

value range?

YES:

Go to Step 7.

NO:

Replace the electronic control coupling. (Refer

to P.27C-94.) Then go to Step 10.

STEP 7. Voltage measurement at the AWD-ECU connector

(1)

Disconnect the C-128 AWD-ECU connector.

C-128 harness
connector:
harness side

ZC3047190000

(2)

Measure the voltage between the C-128 wiring harness side
connector terminals No. 3/4 and No. 10.

OK: Battery voltage

Q:Is the check result normal?

YES:

Go to Step 9.

NO:

Go to Step 8.

ELECTRONIC CONTROL AWD

27C-15

DIAGNOSIS

C-128 harness
connector:
harness side

ZC3047200000

STEP 8. Wiring harness check

NOTE:

Prior to the wiring harness inspection, check the

C-315 ETACS-ECU connector, and repair if necessary.
Check the wiring harness between the C-128 AWD-ECU
connector (terminal No. 3) and the C-309 ETACS-ECU
connector (terminal No. 1) for damage or other problem.

Q:Is the wiring harness in good condition?

YES:

Go to Step 9.

NO:

Repair the wiring harness. Then go to Step 10.

STEP 9. Check whether the DTC is reset.

(1)

Erase the DTC.

(2)

Turn the ignition switch from the LOCK (OFF) position to the
ON position.

(3)

Use scan tool MB991958 to activate the electronic control
coupling to the maximum AWD control torque. (Refer to
Actuator Test Table P.27C-89.)

(4)

Check if the DTC is set.

Q:Is the DTC No. C1456 set?

YES:

Replace AWD-ECU. (Refer to P.27C-92.) Then go to

Step 10.

NO:

The trouble can be an intermittent malfunction.

(Refer to GROUP 00 - How to Cope with Intermittent
Malfunction P.00-15.)

STEP 10. Check whether the DTC is reset.

Q:Is the DTC No. C1456 set?

YES:

Diagnose again from Step 1.

NO:

This diagnosis is complete.

27C-16

ELECTRONIC CONTROL AWD

DIAGNOSIS

DTC C145A: Wiring harness and coupling coil short circuit failure

M12704100014USA0000010000

ETACS-
ECU

FUSIBLE
LINK

AWD-ECU

ELECTRONIC
CONTROL
COUPLING
SOLENOID

D7G27M000A00

GRA

BLUE

YELLO

GRA

WHITE

C-309

C-31

C-128

D-113

D-119

YELLO

BLUE

ZC6000240000

Connectors: C-31, C-128

C-128

C-31

ZC6000250000

Connector: D-113

D-113

ZC6000260000

ETACS-ECU
(front view)

C-315

C-309
(B)

Connectors: C-309, C-315

ELECTRONIC CONTROL AWD

27C-17

DIAGNOSIS

If there is any problem in the CAN bus lines, an
incorrect DTC may be set. Prior to this diagnosis,
always diagnose the CAN bus lines.

OPERATION
If the current flowing the electronic control coupling
solenoid coil is larger than the command value from
AWD-ECU, the system is deactivated.

DTC SET CONDITIONS
If the following conditions are met when the system is
activated, AWD-ECU switches the control from AWD
to FWD, flashes the AWD/LOCK indicators
alternately, and sets the DTC No. C145A.

｠

Sets the specified current command value to the
electronic control coupling solenoid

｠

Drive current value of the electronic control coupling
solenoid: Deviated from the normal current range

TROUBLESHOOTING HINTS

Current trouble

｠

Short circuit inside the electronic control coupling
solenoid

｠

Wiring harness or connector failure (short circuit
between the electronic control coupling solenoid
terminals)

｠

Damaged wiring harness and connectors

｠

Short to earth between AWD-ECU and the
electronic control coupling solenoid

｠

AWD-ECU internal error

Past trouble

｠

Intermittent wiring harness or connector failure

NOTE:

For diagnosis procedures, refer to "How

to treat past trouble". (Refer to GROUP 00, How
to Treat Past Trouble P.00-17.)

｠

Intermittent electronic control coupling failure
(solenoid failure)

DIAGNOSIS

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicle Communication Interface

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

STEP 1. Scan tool MB991958 CAN bus diagnostics
Use scan tool MB991958 to diagnose the CAN bus lines.

Q:Is the check result normal?

YES:

Go to Step 3.

NO:

Repair the CAN bus line. (Refer to GROUP 54D - CAN

bus diagnostic chart P.54D-17.) On completion, go to
Step 2.

STEP 2. Check whether the DTC is reset after repairing the
CAN bus line.

(1)

Erase the DTC.

(2)

Turn the ignition switch from the LOCK (OFF) position to the
ON position and hold there for 2 seconds.

(3)

Use scan tool MB991958 to forcibly activate the electronic
control coupling from 0 N·m to 100 N·m in 10 N·m steps.
(Refer to Actuator Test Table P.27C-89.)

(4)

Check if the DTC is set.

Q:Is the DTC No. C145A set?

YES:

Go to Step 3.

NO:

This diagnosis is complete.

STEP 3. Scan tool MB991958 data list
Check the following service data. (Refer to P.27C-87.)

｠

Item 04: Coupling current command value

27C-18

ELECTRONIC CONTROL AWD

DIAGNOSIS

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