Mitsubishi Evolution X. Manual — part 604

DIAGNOSIS

TSB Revision

WIRELESS CONTROL MODULE (WCM)

42C-33

STEP 5. 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-9

).

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

).

DTC B2204: Coding data mismatch

CAUTION

• When DTC B2204 is set, be sure to diagnose

the CAN bus line.

• When replacing the ECU, always check that

the communication circuit is normal.

.

DTC SET CONDITION

If the vehicle information data transmitted from the
ETACS-ECU via the CAN bus lines is different from
that registered in the WCM, the WCM sets the DTC
No. B2204.

.

TECHNICAL DESCRIPTION (COMMENT)

WCM determines that the abnormality is present
when the vehicle information registered in it does not
match the vehicle information data.

.

TROUBLESHOOTING HINTS

• Malfunction of WCM

• 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

DIAGNOSIS

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WIRELESS CONTROL MODULE (WCM)

42C-34

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
connecting or disconnecting scan tool (MB991958).
(1) Connect scan tool MB991958 to the data link connector.
(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-14

).

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

YES : Troubleshoot the ETACS (Refer to GROUP 54A

−

ETACS, Diagnosis

P.54A-582

).

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-9

).

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

).

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

DIAGNOSIS

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WIRELESS CONTROL MODULE (WCM)

42C-35

DTC B2206: VIN code mismatch

.

DTC SET CONDITION

WCM sets DTC B2206 when VIN registered in it and
VIN that has been transmitted on the CAN bus do not
match.

.

TECHNICAL DESCRIPTION (COMMENT)

WCM determines that the abnormality is present
when VIN registered in it and the one that has been
transmitted on the CAN bus do not match.

.

TROUBLESHOOTING HINTS

• Malfunction of WCM

• VIN registered in engine control module

unmatched

• WCM being registered to another vehicle

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. Check the VIN registered in the engine control
module and the VIN of the vehicle.
Check if the VIN registered in the engine control module
matches with the VIN of the vehicle.
(1) On the system selection screen of the M.U.T.-III, select

"MFI/GDI/Diesel".

(2) Select "Coding."
(3) Select "VIN Information."
(4) Compare with the VIN of the vehicle.
Q: Does the VIN of the engine control module match with

the VIN of the vehicle?
YES : Go to Step 2.
NO : Write the VIN to the engine control module. [Refer to

GROUP 00

− How to Perform Vehicle Identification

Number (VIN) Writing

P.00-27

]. Record VIN and go to

Step 2 .

DIAGNOSIS

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WIRELESS CONTROL MODULE (WCM)

42C-36

STEP 2. Recheck for diagnostic trouble code.
Check again if the DTC is set to the WCM.

CAUTION

To prevent damage to scan tool (MB991958), always turn
the ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool (MB991958).
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
Q: Is the DTC set?

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

P.42C-9

). After registering the ID codes, go to Step 3.

NO : The procedure is complete.

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

YES : Replace the engine control module and record the

VIN [Refer to GROUP 00

− How To Perform Vehicle

Identification Number (VIN) Writing

P.00-27

].

NO : The procedure is complete.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB