Mitsubishi Outlander GS45X. Manual — part 1177

DIAGNOSIS

TSB Revision

WIRELESS CONTROL MODULE (WCM)

42C-75

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. Using scan tool MB991958, diagnose the CAN bus
line.
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 54C

−

CAN Bus Diagnostics table

P.54C-17

). On

completion, go to Step 2.

STEP 2. Diagnostic trouble code recheck after resetting
CAN bus lines
(1) Turn the ignition switch to the "LOCK" (OFF) position.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC U1412 set?

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

STEP 3. Check for other diagnostic trouble code.
Check if the diagnostic trouble code is set from ABS-ECU or
ASC-ECU.<Refer to GROUP 35B,diagnostic trouble code chart

P.35B-15

(vehicles without ASC) or Refer to GROUP 35C,

diagnostic trouble code chart

P.35C-18

(vehicles with ASC)>

Q: Is the check result normal?

YES : Go to Step 4.
NO : Carry out the troubleshooting for ABS-ECU or

ASC-ECU.<Refer to GROUP 35B, diagnostic trouble
code chart

P.35B-15

(vehicles without ASC) or Refer

to GROUP 35C, diagnostic trouble code chart

P.35C-18

(vehicles with ASC)>. Then go to Step 5.

STEP 4. Check for other diagnostic trouble code.
Check if the diagnostic trouble code is set from ETACS-ECU
(Refer to GROUP 54A

− diagnostic trouble code chart

P.54A-733

).

Q: Is the check result normal?

YES : Replace the WCM and register ID codes (Refer to

P.42C-10

). Then go to Step 5.

NO : Carry out the troubleshooting (Refer to GROUP 54A

−

diagnostic trouble code chart

P.54A-733

). Then go to

Step 5.

DIAGNOSIS

TSB Revision

WIRELESS CONTROL MODULE (WCM)

42C-76

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set.
(1) Turn the ignition switch to the "LOCK" (OFF) position.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC U1412 reset?

YES : Start over at Step 1.
NO : The procedure is complete.

DTC U1415: Coding not completed/Data fail

CAUTION

• If DTC U1415 is set, diagnose the CAN bus

lines.

• When replacing the ECU, always check that

the communication circuit is normal.

.

DIAGNOSTIC FUNCTION

If the vehicle information data is not registered to the
combination meter, the WCM sets DTC U1415.

.

JUDGMENT CRITERIA

With the global coding counter value "0," if all the glo-
bal coding data (vehicle information) are not stored,
the WCM determines that a problem has occurred.

.

TROUBLESHOOTING HINTS

• The CAN bus line may be defective.

• The WCM may be defective.

• The ETACS-ECU may be defective.

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 (Vehicles with

CAN communication system)

DIAGNOSIS

TSB Revision

WIRELESS CONTROL MODULE (WCM)

42C-77

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the

Scan Tool (M.U.T.-III)

P.42C-7

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO : Repair the CAN bus line. (Refer to GROUP 54C,

Diagnosis

P.54C-17

).

STEP 2. Using scan tool MB991958, read the ETACS-ECU
diagnostic trouble code.
Check if a coding-related DTC is set to the ETACS-ECU.
Q: Is the DTC set?

YES : Troubleshoot the ETACS-ECU. Refer to

P.54A-733

.

NO : Go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the WCM.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"

position.

(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace WCM and register the ID codes. (Refer to

P.42C-10

.)

NO : The trouble can be an intermittent malfunction (Refer

to GROUP 00

− How to use

Troubleshooting/inspection Service Points

− How to

Cope with Intermittent Malfunction

P.00-15

).

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector

DIAGNOSIS

TSB Revision

WIRELESS CONTROL MODULE (WCM)

42C-78

Code No.U1417 Implausible coding data

CAUTION

• If diagnostic trouble code U1417 is set in WCM, always

diagnose the CAN bus lines. 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 communica-

tion circuit is normal.

• When diagnostic trouble code U1417 is set in WCM, the

diagnostic trouble code may also be set in ETACS-ECU.
When the diagnostic trouble code is set in ETACS-ECU,
carry out the diagnosis of the diagnostic trouble code
for ETACS-ECU first.

.

CIRCUIT OPERATION

WCM receives the vehicle information stored in the
ETACS-ECU via CAN bus lines.

.

DTC SET CONDITIONS

WCM communicates with ETACS-ECU via CAN bus lines. This
diagnostic trouble code is set when the vehicle information
received from the ETACS-ECU is invalid.

.

PROBABLE CAUSES

• Malfunction of ETACS-ECU

• Engine control module malfunction

• ETACS-ECUs have been interchanged between two vehi-

cles.

• WCM malfunction

• External noise interference

• WCMs have been interchanged between two vehicles.

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