Mitsubishi Outlander XL. Manual — part 570
DTC C211C: Abnormal IG1 power supply low voltage
M12704100049USA0000010000
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
ZC6000260002
ETACS-ECU
(front view)
Connectors: C-309, C-313, C-315
C-315
C-309
(B)
C-313
(BR)
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 an IG1 power supply voltage
abnormal drop, and if any abnormality occurs, it
interrupts the system.
ELECTRONIC CONTROL AWD
27C-39
DIAGNOSIS
DTC SET CONDITIONS
If the following conditions are met when the system is
activated, AWD-ECU gradually switches the control
from AWD to FWD, flashes the AWD/LOCK indicators
alternately, and sets the DTC No. C211C.
⦆
IG1 voltage: Less than 8 V
⦆
Battery voltage: More than 9 V
PROBABLE CAUSES
Current trouble
⦆
Malfunction of IG1 relay in ETACS-ECU
⦆
Damaged wiring harness and connectors
⦆
Short to ground or open circuit between the battery
and AWD-ECU
TROUBLESHOOTING HINTS
⦆
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
malfunction
of
ETACS-ECU
(malfunction of IG1 relay)
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.
(3)
Check if the DTC is set.
Q:Is the DTC No. C211C set?
YES:
Go to Step 3.
NO:
This diagnosis is complete.
STEP 3. 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-309, C-313, C-317 ETACS-ECU 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. 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.
27C-40
ELECTRONIC CONTROL AWD
DIAGNOSIS
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 8.
STEP 5. Voltage measurement at the AWD-ECU connector
(1)
Disconnect the C-128 AWD-ECU connector.
C-128 harness
connector:
harness side
ZC3047200000
(2)
Measure the voltage between the C-128 wiring harness side
connector terminals No. 4 and No. 10.
OK: Battery voltage
Q:Is the check result normal?
YES:
Go to Step 8.
NO:
Go to Step 6.
STEP 6. Wiring harness check
Check the wiring harness between the C-128 AWD-ECU
connector (terminal No. 4) 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 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 No. C211C set?
YES:
Replace AWD-ECU. (Refer to P.27C-92.) Then go to
Step 8.
NO:
The trouble can be an intermittent malfunction.
(Refer to GROUP 00 - How to Cope with Intermittent
Malfunction P.00-15.)
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 No. C211C set?
YES:
Diagnose again from Step 1.
NO:
This diagnosis is complete.
ELECTRONIC CONTROL AWD
27C-41
DIAGNOSIS
DTC C211D: Abnormal IG1 power supply high voltage
M12704100020USA0000010000
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
ZC6000260002
ETACS-ECU
(front view)
Connectors: C-309, C-313, C-315
C-315
C-309
(B)
C-313
(BR)
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.
27C-42
ELECTRONIC CONTROL AWD
DIAGNOSIS
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