Mitsubishi Outlander XL. Manual - part 566

 

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Mitsubishi Outlander XL. Manual - part 566

 

 

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

Item 05: Coupling current monitor value

Q:Is the check result normal?

YES:

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

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 (coupling side)
terminals

1

2

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.

ELECTRONIC CONTROL AWD

27C-23

DIAGNOSIS

C-128 harness 
connector: 
harness side 

ZC3047190000

C-128 harness 
connector: 
harness side 

ZC3047200000

(2)

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

OK: Battery voltage

Q:Is the check result normal?

YES:

 Go to Step 9.

NO:

 Go to Step 8.

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 and hold there for 2 seconds.

(3)

Use scan tool MB991958 to forcibly activate the electronic
control coupling from 600 to 730 N·m (443 to 538 ft-lb) in 10
N·m  (7.4  ft-lb)  steps.  (Refer  to  Actuator  Test  Table  P.
27C-89.)

(4)

Check if the DTC is set.

Q:Is the DTC No. C145D 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.

(1)

Erase the DTC.

(2)

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

27C-24

ELECTRONIC CONTROL AWD

DIAGNOSIS

(3)

Use scan tool MB991958 to forcibly activate the electronic
control coupling from 600 to 730 N·m (443 to 538 ft-lb) in 10
N·m  (7.4  ft-lb)  steps.  (Refer  to  Actuator  Test  Table  P.
27C-89.)

(4)

Check if the DTC is set.

Q:Is the DTC No. C145D set?

YES:

 Diagnose again from Step 1.

NO:

 This diagnosis is complete.

DTC C145F: Coupling Overload

M12704100016USA0000010000

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 AWD-ECU determines that the vehicle is used under
some severe operational conditions (such as a long-
time driving in AWD on a sandy road, slushy road or
road with deep snows or towing or long hill-climbing),
AWD-ECU  detects  the  overload  to  the  coupling.  If
abnormal overload is detected, AWD-ECU interrupts
the system to prevent it from being damaged.

DTC SET CONDITIONS
If  the  following  conditions  are  met,  AWD-ECU
gradually  switches  the  control  from  AWD  to  FWD,
makes  the  drive  system  fluid  temperature  warning
lamp illuminate, and sets the DTC No. C145F.

AWD selector switch: AWD

When the load to the electronic control coupling is
large, the mode is switched to the FWD mode.

TROUBLESHOOTING HINTS

Current trouble

The driving conditions are severe.

Electronic control coupling failure (clutch slippage)

AWD-ECU malfunction

Abnormality in ABS wheel speed signal

Abnormality  in  torque  command  value  from  the
ASC-ECU

Past trouble

The past driving conditions were severe.

Electronic  control  coupling  intermittent  failure
(clutch slippage)

Abnormality in ABS wheel speed signal

Abnormality  in  torque  command  value  from  the
ASC-ECU

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 4.

NO:

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

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

ELECTRONIC CONTROL AWD

27C-25

DIAGNOSIS

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 No. C145F set?

YES:

 Go to Step 3.

NO:

 This diagnosis is complete.

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

Item 07: CAN system (ABS/ASC)

Item 16: FL wheel speed sensor

Item 17: FR wheel speed sensor

Item 18: RL wheel speed sensor

Item 19: RR wheel speed sensor

Q:Is the DTC set?

YES:

 Troubleshoot the ABS system. (Refer to GROUP 35B -

Troubleshooting P.35B-9.)

NO:

 Go to Step 4.

STEP 4. Scan tool MB991958 actuator test
Perform  the  actuator  test  for  the  following  items.  (Refer  to  P.
27C-89.)

Item 01: AWD coupling control torque

Q:Does the electronic control coupling transfer the torque

correctly?

YES:

 Go to Step 5.

NO:

 Replace the electronic control coupling. (Refer

to P.27C-94.) 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.

(3)

Check if the DTC is set.

Q:Is the DTC No. C145F set?

YES:

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

Step 6.

NO:

 The code may be set because of some severe

operational conditions such as a long-time high speed
driving or long hill-climbing in AWD condition.

STEP 6. Check whether the DTC is reset.

Q:Is the DTC No. C145F set?

YES:

 Diagnose again from Step 1.

NO:

 This diagnosis is complete.

27C-26

ELECTRONIC CONTROL AWD

DIAGNOSIS

 

 

 

 

 

 

 

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