Mitsubishi Outlander XL. Manual — part 574
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 at least 3 times.
(3)
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 at least 3 times.
(3)
Check if the DTC is set.
Q:Is the DTC No. C145D set?
YES:
Diagnose again from Step 1.
NO:
This diagnosis is complete.
ELECTRONIC CONTROL AWD
27C-55
DIAGNOSIS
DTC U0001: Malfunction of bus-off
M12704100024USA0000010000
ETACS-ECU
FUSIBLE
LINK
34
IGNITION
SWITCH (IG1)
IG1
RELAY
AWD-ECU
D7G27M002A00
GREY
GREY
GREY
WHITE
WHITE
C-128
C-31
C-309
ZC6000240002
Connectors: C-128
C-128
ZC6000260001
ETACS-ECU
(front view)
C-313
(BR)
C-317
Connectors: C-313, C-317
⦆
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.
27C-56
ELECTRONIC CONTROL AWD
DIAGNOSIS
OPERATION
AWD-ECU monitors the CAN C-bus off interruption,
and if any abnormality occurs, it interrupts the system.
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 No.
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 Treat Past Trouble 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 54D - CAN
bus diagnostic chart P.54D-17.) Then go to Step 2.
STEP 2. 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
⦆
C-313, C-317 ETACS-ECU connector
Q:Are the connectors and terminals in good condition?
YES:
Go to Step 3.
NO:
Repair the connector(s) or terminal(s). Then go to
Step 5.
STEP 3. Wiring harness check
Check the wiring harness between the C-128 AWD-ECU
connector and the C-313 ETACS-ECU connector for damage or
other problem.
Q:Is the wiring harness in good condition?
YES:
Go to Step 4.
NO:
Repair damage or other problem in the wiring harness.
Then go to Step 5.
STEP 4. 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.
ELECTRONIC CONTROL AWD
27C-57
DIAGNOSIS
Q:Is the DTC No. U0001 set?
YES:
Replace AWD-ECU. (Refer to P.27C-92.) Then go to
Step 5.
NO:
The trouble can be an intermittent malfunction such
as loose connector fit, wiring harness open circuit.
(Refer to GROUP - How to Cope with Intermittent
Malfunction P.00-15.)
STEP 5. Check whether the DTC is reset.
Q:Is the DTC No. U0001 set?
YES:
Diagnose again from Step 1.
NO:
This diagnosis is complete.
DTC U0100: Engine CAN time-out
M12704100025USA0000010000
ETACS-ECU
FUSIBLE
LINK
34
IGNITION
SWITCH (IG1)
IG1
RELAY
AWD-ECU
D7G27M002A00
GREY
GREY
GREY
WHITE
WHITE
C-128
C-31
C-309
27C-58
ELECTRONIC CONTROL AWD
DIAGNOSIS
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