Mitsubishi Outlander GS45X. Manual — part 1170

DIAGNOSIS

TSB Revision

WIRELESS CONTROL MODULE (WCM)

42C-47

STEP 2. Diagnostic trouble code check
(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 C1900 set?

YES : Register the ID codes (Refer to

P.42C-99

). Then go

to Step 3.

NO : The procedure is complete.

STEP 3. 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 C1900 reset?

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

P.42C-10

). Then start over at Step 1.

NO : The procedure is complete.

DIAGNOSIS

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WIRELESS CONTROL MODULE (WCM)

42C-48

DTC C1901: Vehicle speed information abnormality

CAUTION

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

P.54C-16

).

.

DTC SET CONDITION

WCM receives the wheel speed information from ABS-ECU or
ASC-ECU via the CAN-bus line. Although WCM receives the
information that the wheel is not currently rotated from
ABS-ECU or ASC-ECU, if the TPMS transmitter sends the
information that the wheel is rotated, this code is set.

.

TROUBLESHOOTING HINTS

The most likely causes for this DTC to set are:

• Damaged wiring harness and connector

• Malfunction of TPMS transmitter

• Malfunction of WCM

• Malfunction of ABS-ECU or ASC-ECU

• 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

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-16

). 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 C1901 set?

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

DIAGNOSIS

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WIRELESS CONTROL MODULE (WCM)

42C-49

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 6.

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

− diagnostic trouble code chart

P.54A-733

).

Q: Is the check result normal?

YES : Go to Step 5.
NO : Troubleshoot the set DTC (Refer to GROUP 54A,

ETACS

− diagnostic trouble code chart

P.54A-733

).

Then go to Step 6.

STEP 5. Check the TPMS transmitter acceleration.
Check the acceleration value of each TPMS transmitter by the
TPMS transmitter check function (Refer to

P.42C-99

).

OK:

Acceleration value: 5G or less

Q: Is the check result OK?

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

P.42C-10

). Then go to Step 6.

NO : Replace the TPMS transmitter and register ID codes

(Refer to

P.42C-10

). Then go to Step 6.

STEP 6. Recheck for diagnostic trouble code.
(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 C1901 set?

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

DIAGNOSIS

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WIRELESS CONTROL MODULE (WCM)

42C-50

DTC C1910: Transmitter low battery voltage abnormality 1

DTC C1920: Transmitter low battery voltage abnormality 2

DTC C1930: Transmitter low battery voltage abnormality 3

DTC C1940: Transmitter low battery voltage abnormality 4

DTC C1911: Reception abnormality 1

DTC C1921: Reception abnormality 2

DTC C1931: Reception abnormality 3

DTC C1941: Reception abnormality 4

CAUTION

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

P.54C-17

).

.

DTC SET CONDITION

DTC C1910, C1920, C1930, C1940

• When the reception abnormality warning is activated

because of the low battery voltage of the TPMS transmitter.

DTC C1911, C1921, C1931, C1941

• When WCM cannot receive the signals from the TPMS

transmitters while driving for about 20 minutes, this code is
set.

.

TROUBLESHOOTING HINTS

The most likely causes for this DTC to set are:

• Low battery that is incorporated into the TPMS transmitter

• Damaged wiring harness and connector

• Registered IDs unmatched

• Malfunction of TPMS transmitter

• Malfunction of WCM

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.