Mitsubishi Outlander GS45X. Manual — part 1334

DIAGNOSIS

TSB Revision

ELECTRONIC CONTROL AWD

27C-59

DTC C2208: AWD-ECU internal error

ELECTRONIC
CONTROL
COUPLING
SOLENOID

ETACS-ECU

FUSIBLE
LINK

34

IGNITION
SWITCH (IG1)

IG1
RELAY

AWD-ECU

ACA02787

AC901227AE

C-32

C-138

Connectors: C-32, C-128, C-138

C-128

AC901229AB

Connectors: D-113, D119

D-113

D-119

DIAGNOSIS

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ELECTRONIC CONTROL AWD

27C-60

CAUTION

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

AWD-ECU monitors the coupling solenoid wiring har-
ness abnormality and AWD-ECU internal error, and if
any abnormality occurs, it deactivates the system.

.

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 C2208.

• AWD-ECU internal malfunction detection or short

to power supply at harness between AWD-ECU
and the electronic control coupling solenoid

.

TROUBLESHOOTING HINTS

Current trouble

• AWD-ECU internal error

• Damaged wiring harness and connectors

• Short to power supply between AWD-ECU

and the electronic control coupling solenoid

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 Use Troubleshooting/How to Treat Past Trou-
ble

P.00-17

).

• AWD-ECU internal error

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 54C

−

Troubleshooting/CAN Bus Diagnostics Table

P.54C-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 at least 3 times.

(3) Fully depress the accelerator pedal, and maintain its

position for 2 seconds.
NOTE: The coupling coil electronic control is also based on
the accelerator pedal opening degree, thus the signal is
sent to the ECU.

(4) Check if the DTC is set.
Q: Is the DTC C2208 set?

YES : Go to Step 3.
NO : The procedure is complete.

DIAGNOSIS

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ELECTRONIC CONTROL AWD

27C-61

STEP 3. Check the following connector:
Check the connectors below for improper engagement, termi-
nal damage or terminal drawn in the connector case.

• C-128 AWD-ECU connector

• C-138 intermediate connector

• D-113 intermediate connector

• D-119 electronic control coupling solenoid connector

Q: Are the connectors and terminals in good condition?

YES : Go to Step 4.
NO : Repair the connector(s) or terminal(s). Then go to

Step 6.

STEP 4. Wiring harness check
Check the wiring harness between the C-128 AWD-ECU con-
nector and the C-138 intermediate connector, the wiring har-
ness between the C-138 intermediate connector and the D-113
intermediate connector, and the wiring harness between the
D-113 intermediate connector and the D-119 electronic control
coupling solenoid side connector for damage or other problem.
Q: Is the wiring harness in good condition?

YES : Go to Step 5.
NO : Repair damage or other problem in the wiring

harness. Then go to Step 6.

STEP 5. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Turn the ignition switch from the "LOCK" (OFF) position to

the "ON" position at least 3 times.

(3) Check if the DTC is set.
Q: Is the DTC C2208 set?

YES : Replace AWD-ECU (Refer to

P.27C-95

). Then go to

Step 6 .

NO : The trouble can be an intermittent malfunction (Refer

to GROUP 00

− How to Use Troubleshooting/How to

Cope with Intermittent Malfunctions

P.00-15

).

STEP 6. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Turn the ignition switch from the "LOCK" (OFF) position to

the "ON" position at least 3 times.

(3) Check if the DTC is set.
Q: Is the DTC C2208 set?

YES : Diagnose again from Step 1.
NO : The procedure is complete.

DIAGNOSIS

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ELECTRONIC CONTROL AWD

27C-62

DTC U0001: Bus-off error

CAUTION

• 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.

• Before replacing the ECU, ensure that the

communication circuit is normal.

.

OPERATION

AWD-ECU monitors the CAN C-bus off interruption,
and if any abnormality occurs, it interrupts the sys-
tem.

.

DTC SET CONDITIONS

If the following conditions are met when the system
is in operation (always), AWD-ECU gradually
switches the control from AWD to FWD, flashes the
AWD/LOCK indicators alternately, and sets the DTC
U0001.

• IG1 voltage: 10 V or more

• When CAN C-bus off interruption is detected

.

TROUBLESHOOTING HINTS

Current trouble

• Wiring harness or connector failure of CAN bus

line

• AWD-ECU malfunction

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 Use Troubleshooting/How to Treat Past Trou-
ble

P.00-17

).

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 2.
NO : Repair the CAN bus line (Refer to GROUP 54C

−

Troubleshooting/CAN Bus Diagnostics Table

P.54C-17

). Then go to Step 3.

STEP 2. 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) Check if the DTC is set.
Q: Is the DTC U0001 set?

YES : Replace AWD-ECU (Refer to

P.27C-95

). Then go to

Step 3 .

NO : The trouble can be an intermittent malfunction such

as loose connector fit, wiring harness open circuit
(Refer to GROUP

− How to Use Troubleshooting/How

to Cope with Intermittent Malfunctions

P.00-15

).