Mitsubishi Outlander XL. Manual - part 680

 

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Mitsubishi Outlander XL. Manual - part 680

 

 

External noise interference

DIAGNOSIS

Required Special Tools:

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

MB991824: Vehicle Communication Interface (V.C.I.)

MB991827: M.U.T.-III USB Cable

MB991910: M.U.T.-III Main Harness A

STEP 1. M.U.T.-III CAN bus diagnostics
Use scan tool to diagnose the CAN bus lines.

Q:Is the check result normal?

YES:

 Go to Step 3.

NO:

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

Bus Diagnostics table P.54D-17.) On completion, go to
Step 2.

STEP 2. Diagnostic trouble code recheck after resetting
CAN bus lines

Q:Is DTC C121C set?

YES:

 Go to Step 3.

NO:

 The procedure is complete.

STEP 3. M.U.T.-III other system diagnostic trouble code
Use scan tool to check that the diagnostic trouble code is set in
the engine ECU.

Q:Is any DTC set?

YES:

 Troubleshoot the engine ECU diagnostic trouble

code. (Refer to GROUP 13Ab - Diagnostic trouble code
chart P.13Ab-44.)

NO:

 Go to Step 4.

STEP 4. Check whether the diagnostic trouble code is reset.

Q:Is DTC C121C set?

YES:

 Replace the ASC-ECU. Then go to Step 5.

NO:

 If the trouble symptom is resolved, an intermittent

malfunction such as poorly engaged connector(s) or wiring
harness is suspected. (Refer to GROUP 00 - How to Cope
with Intermittent Malfunction P.00-15.)

STEP 5. M.U.T.-III diagnostic trouble code
Check  that  the  diagnostic  trouble  code  U1417  is  set  in  ASC-
ECU.

Q:Is DTC U1417 set?

YES:

 Troubleshoot for the diagnostic trouble code U1417.

Refer to P.35C-158.

NO:

 The procedure is complete.

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-127

DIAGNOSIS

DTC C1290: CAN time-out error

M13506100055USA0000010000

If the diagnostic trouble code C1290 is set in ASC-ECU,
always diagnose the CAN bus line. If there is any fault in
the CAN bus lines, an incorrect diagnostic trouble code
may be set. In this case, the set diagnostic trouble code
is not highly reliable.

Before replacing the ECU, ensure that the communication
circuit is normal.

When the diagnostic trouble code C1290 is set in ASC-
ECU, the diagnostic trouble code for another system may
also be set. When the diagnostic trouble code for another
system is set, carry out diagnosis for that system first.

CIRCUIT OPERATION
ASC-ECU receives signals necessary for the operations of ABS,
ASC,  and  TCL  from  the  engine  ECU,  A/T-ECU,  AWD-ECU,
ETACS-ECU, and the steering wheel sensor via the CAN bus
lines.

DTC SET CONDITIONS
ASC-ECU receives signals necessary for the operations of ABS,
ASC,  and  TCL  from  the  engine  ECU,  A/T-ECU,  AWD-ECU,
ETACS-ECU, and steering wheel sensor via CAN bus lines. This
diagnostic trouble code is stored when ASC-ECU cannot receive
the signals necessary for the operations of ABS, ASC, and TCL
from the engine ECU, A/T-ECU, AWD-ECU, ETACS-ECU, and
steering wheel sensor.

PROBABLE CAUSES

Engine ECU malfunction

Malfunction of A/T-ECU

AWD-ECU malfunction

Steering wheel sensor malfunction

Malfunction of the CAN bus

ASC-ECU malfunction

Malfunction of ETACS-ECU

DIAGNOSIS

Required Special Tools:

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

MB991824: Vehicle Communication Interface (V.C.I.)

MB991827: M.U.T.-III USB Cable

MB991910: M.U.T.-III Main Harness A

35C-128

ACTIVE SKID CONTROL SYSTEM (ASC)

DIAGNOSIS

STEP 1. M.U.T.-III CAN bus diagnostics
Use scan tool to diagnose the CAN bus lines.

Q:Is the check result normal?

YES:

 Go to Step 2.

NO:

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

Bus Diagnostics table P.54D-17.) On completion, go to
Step 5.

STEP 2. M.U.T.-III diagnostic trouble code
Check that the diagnostic trouble codes U0100, U0101, U0114,
U0126, and U0141 are set in ASC-ECU.

Q:Is any DTC set?

YES:

 Troubleshoot for the relevant diagnostic trouble

code. (Refer to P.35C-11.)

NO:

 Go to Step 3.

STEP 3. M.U.T.-III other system diagnostic trouble code
Using scan tool, check if the diagnostic trouble codes are set
from the engine ECU, A/T-ECU, AWD-ECU and ETACS-ECU or
not.

Q:Is any DTC set?

YES:

 Troubleshoot the relevant diagnostic trouble code,

and then go to Step 4.

NO:

 Go to Step 5.

STEP 4. Check whether the diagnostic trouble code is reset.

Q:Is DTC C1290 set?

YES:

 Replace the ASC-ECU. Go to Step 5.

NO:

 If the trouble symptom is resolved, an intermittent

malfunction such as poorly engaged connector(s) or wiring
harness is suspected. (Refer to GROUP 00 - How to Cope
with Intermittent Malfunction P.00-15.)

STEP 5. Check whether the diagnostic trouble code is reset.

Q:Is DTC C1290 set?

YES:

 Return to Step 1.

NO:

 The procedure is complete.

DTC C2203: VIN not recorded

M13506100056USA0000010000

If there is any problem in the CAN bus lines, an incorrect
diagnostic  trouble  code  may  be  set.  Prior  to  this
diagnosis, diagnose the CAN bus lines. (Refer to GROUP
54D, Trouble code diagnosis P.54D-17
).

When other diagnostic trouble code for ASC-ECU is set,
troubleshoot that diagnostic trouble code first.

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-129

DIAGNOSIS

CIRCUIT OPERATION
ASC-ECU  receives  vehicle  information  from  the  engine  ECU
and stores it.

DTC SET CONDITIONS
This  diagnostic  trouble  code  is  set  when  ASC-ECU  cannot
receive the vehicle information from the engine ECU.

PROBABLE CAUSES

Malfunction of the CAN bus

Engine ECU malfunction

ASC-ECU malfunction

DIAGNOSIS

Required Special Tools:

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

MB991824: Vehicle Communication Interface (V.C.I.)

MB991827: M.U.T.-III USB Cable

MB991910: M.U.T.-III Main Harness A

STEP 1. M.U.T.-III CAN bus diagnostics
Use scan tool to diagnose the CAN bus lines.

Q:Is the check result normal?

YES:

 Go to Step 3.

NO:

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

Bus Diagnostics table P.54D-17.) On completion, go to
Step 2.

STEP 2. Diagnostic trouble code recheck after resetting
CAN bus lines

Q:Is DTC C2203 set?

YES:

 Go to Step 3.

NO:

 The procedure is complete.

STEP 3. M.U.T.-III diagnostic trouble code
Check that the engine ECU sets a diagnostic trouble code.

Q:Is any DTC set?

YES:

 Troubleshoot the engine ECU diagnostic trouble

code. (Refer to GROUP 13Ab - Diagnostic trouble code
chart P.13Ab-44.)

NO:

 Go to Step 4.

STEP 4. Check whether the diagnostic trouble code is reset.

Q:Is DTC C2203 set?

YES:

 Replace the ASC-ECU.

NO:

 The procedure is complete.

35C-130

ACTIVE SKID CONTROL SYSTEM (ASC)

DIAGNOSIS

 

 

 

 

 

 

 

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