Mitsubishi Outlander GS45X. Manual - part 1332

DIAGNOSIS

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ELECTRONIC CONTROL AWD

27C-51

DTC C211E: Abnormal power supply voltage (Too low)

ETACS-ECU

FUSIBLE
LINK

34

IGNITION
SWITCH (IG1)

IG1
RELAY

AWD-ECU

ACA02791

DIAGNOSIS

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ELECTRONIC CONTROL AWD

27C-52

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 detects a power supply voltage abnor-

mal drop, and if any abnormality occurs, it inter-
rupts the system.

• If any abnormality occurs in the AWD-ECU, the 

system is deactivated.

.

DTC SET CONDITIONS

If the following conditions are met when the system 
is activated, AWD-ECU gradually switches the con-
trol from AWD to FWD, flashes the AWD/LOCK indi-
cators alternately, and sets the DTC C211E.

• IG1 voltage: 7.5 V or more

• Battery power supply voltage is less than 2V

• Abnormal voltage in the ECU

.

TROUBLESHOOTING HINTS

Current trouble

• Damaged wiring harness and connectors

• Short to ground or open circuit between the bat-

tery and AWD-ECU

• 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 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.

(3) Check if the DTC is set.
Q: Is the DTC C211E set?

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

AC901227AB

C-128

C-31

C-138

Connectors: C-31, C-128, C-138

AC901228AB

C-315

C-309
(B)

ETACS-ECU 
(front view)

Connectors: C309, C-315

DIAGNOSIS

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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-309, C-315 ETACS-ECU connector

• C-138 intermediate connector

• C-31 intermediate 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 8.

STEP 4. Voltage measurement at the AWD-ECU connector
(1) Disconnect the C-128 AWD-ECU connector.
(2) Measure the voltage between the C-128 wiring harness 

side connector terminals No.3, No.4 (Ignition switch "ON") 
and the body ground.

OK: System voltage

Q: Is the check result normal?

YES : Go to Step 5.
NO :  Go to Step 6.

STEP 5. Wiring harness check
Check the wiring harness between the C-128 AWD-ECU con-
nector (terminal No.10) and the body ground for damage or 
other problem.
Q: Is the wiring harness in good condition?

YES : Go to Step 7.
NO :  Repair the wiring harness. Then go to Step 8.

STEP 6. Wiring harness check
Check the wiring harness between the C-128 AWD-ECU con-
nector (terminal No.3) and the C-315 ETACS-ECU connector 
(terminal No.4) for damage or other problem.
Q: Is the wiring harness in good condition?

YES : Go to Step 7.
NO :  Repair the wiring harness. Then go to Step 8.

STEP 7. 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 C211E set?

YES : Replace AWD-ECU (Refer to 

P.27C-95

). Then go to 

Step 8 .

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

).

DIAGNOSIS

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ELECTRONIC CONTROL AWD

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STEP 8. 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 C211E set?

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