Mitsubishi Evolution X. Manual - part 609

DIAGNOSIS

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WIRELESS CONTROL MODULE (WCM)

42C-53

•

Terminal No.12 

− body ground.

OK: No continuity

Q: Is the check result normal?

YES : Go to Step 5.
NO (terminal No.1 

− body ground.) : The wiring harness 

between D-14 receiver antenna assembly connector 
terminal No.1 and C-07 WCM connector terminal 
No.1 is shorted to ground. Repair the wiring 
harness.and then register the ID codes. (Refer to 

P.42C-114

.) Then go to Step 8.

NO (terminal No.3 

− body ground.) : The wiring harness 

between D-14 receiver antenna assembly connector 
terminal No.3 and C-07 WCM connector terminal 
No.3 is shorted to ground. Repair the wiring 
harness.and then register the ID codes. (Refer to 

P.42C-114

.) Then go to Step 8.

NO (terminal No.5 

− body ground.) : The wiring harness 

between D-14 receiver antenna assembly connector 
terminal No.5 and C-07 WCM connector terminal 
No.5 is shorted to ground. Repair the wiring 
harness.and then register the ID codes. (Refer to 

P.42C-114

.) Then go to Step 8.

NO (terminal No.8 

− body ground.) : The wiring harness 

between D-14 receiver antenna assembly connector 
terminal No.8 and C-07 WCM connector terminal 
No.8 is shorted to ground. Repair the wiring 
harness.and then register the ID codes. (Refer to 

P.42C-114

.) Then go to Step 8.

NO (terminal No.12 

− body ground.) : The wiring harness 

between D-14 receiver antenna assembly connector 
terminal No.12 and C-07 WCM connector terminal 
No.12 is shorted to ground. Repair the wiring 
harness.and then register the ID codes. (Refer to 

P.42C-114

.) Then go to Step 8.

AC709322 CC

Harness side: D-14

DIAGNOSIS

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WIRELESS CONTROL MODULE (WCM)

42C-54

STEP 5. Wiring harness check between C-07 WCM 
connector and D-14 receiver antenna assembly connector.
(1) Disconnect C-07 WCM connector and D-14 receiver 

antenna assembly connector.

(2) Measure at the connector side of C-07 WCM connector and 

D-14 receiver antenna assembly connector. 

(3) Measure the resistance between the terminals.

•

C-07 WCM connector terminal No.1 

− D-14 receiver 

antenna assembly connector terminal No.1.

•

C-07 WCM connector terminal No.3 

− D-14 receiver 

antenna assembly connector terminal No.3.

•

C-07 WCM connector terminal No.5 

− D-14 receiver 

antenna assembly connector terminal No.5.

•

C-07 WCM connector terminal No.8 

− D-14 receiver 

antenna assembly connector terminal No.8.

AC709322 CI

Harness side: D-14

Harness side: C-07

AC709322 CJ

Harness side: D-14

Harness side: C-07

AC709322 CK

Harness side: D-14

Harness side: C-07

AC709322 CL

Harness side: D-14

Harness side: C-07

DIAGNOSIS

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WIRELESS CONTROL MODULE (WCM)

42C-55

•

C-07 WCM connector terminal No.12 

− D-14 receiver 

antenna assembly connector terminal No.12.

OK: Continuity exists (2 ohms or less)

Q: Is the check result normal?

YES : Go to Step 6.
NO (C-07 WCM connector terminal No.1 

− D-14 receiver 

antenna assembly connector terminal No.1.) : An open 

circuit is present in the wiring harness between C-07 
WCM connector terminal No.1 and D-14 receiver 
antenna assembly connector terminal No.1. Repair 
the wiring harness.and then register the ID codes. 
(Refer to 

P.42C-114

.) Then go to Step 8.

NO (C-07 WCM connector terminal No.3 

− D-14 receiver 

antenna assembly connector terminal No.3.) : An open 

circuit is present in the wiring harness between C-07 
WCM connector terminal No.3 and D-14 receiver 
antenna assembly connector terminal No.3. Repair 
the wiring harness.and then register the ID codes. 
(Refer to 

P.42C-114

.) Then go to Step 8.

NO (C-07 WCM connector terminal No.5 

− D-14 receiver 

antenna assembly connector terminal No.5.) : An open 

circuit is present in the wiring harness between C-07 
WCM connector terminal No.5 and D-14 receiver 
antenna assembly connector terminal No.5. Repair 
the wiring harness.and then register the ID codes. 
(Refer to 

P.42C-114

.) Then go to Step 8.

NO (C-07 WCM connector terminal No.8 

− D-14 receiver 

antenna assembly connector terminal No.8.) : An open 

circuit is present in the wiring harness between C-07 
WCM connector terminal No.8 and D-14 receiver 
antenna assembly connector terminal No.8. Repair 
the wiring harness.and then register the ID codes. 
(Refer to 

P.42C-114

.) Then go to Step 8.

NO (C-07 WCM connector terminal No.12 

− D-14 receiver 

antenna assembly connector terminal No.12.) : An open 

circuit is present in the wiring harness between C-07 
WCM connector terminal No.12 and D-14 receiver 
antenna assembly connector terminal No.12. Repair 
the wiring harness.and then register the ID codes. 
(Refer to 

P.42C-114

.) Then go to Step 8 .

STEP 6. Receiver antenna assembly check
Register the ID codes. If the ID codes can not be registered for 
all the four wheels, replace the receiver antenna assembly.
Q: Is the ID registration completed?

YES : Go to Step 8.
NO :  Replace the receiver antenna assembly and register 

the ID codes again (Refer to 

P.42C-114

). Then go to 

Step 8.

AC709322 CM

Harness side: D-14

Harness side: C-07

DIAGNOSIS

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WIRELESS CONTROL MODULE (WCM)

42C-56

STEP 7. Check for TPMS transmitter.
Identify the TPMS transmitter which the DTC is set by TPMS 
transmitter check (Refer to 

P.42C-125

.)

NOTE: The TPMS transmitter which cannot be checked may 
be faulty or the ID code may not be registered, thus do not 
replace it, but register the ID code. If the transmitter is faulty, it 
is replaced in the ID code registration process. 
Q: Are there any TPMS transmitters which are identified?

YES : Among the checked TPMS transmitters, replace the 

TPMS transmitters to which the DTC is set, and then 
register the ID codes. (Refer to 

P.42C-114

.) Then go 

to Step 8.

NO :  Even when no transmitter is checked, register the ID 

codes. (Refer to 

P.42C-114

.) Then go to Step 8.

STEP 8. Diagnostic trouble code recheck after register the 
ID codes
(1) Turn the ignition switch to the "ON" position.
(2) Check if the DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC C1911, C1921, C1931, C1941, C1914, C1924, 

C1934 or C1944 set?
YES : Replace the WCM and register the ID codes (Refer to 

P.42C-114

). Then start over at Step 1.

NO :  The procedure is complete.

DTC C1913: Acceleration sensor abnormality 1

 

DTC C1923: Acceleration sensor abnormality 2

 

DTC C1933: Acceleration sensor abnormality 3

 

DTC C1943: Acceleration sensor abnormality 4

 

DTC C1914: Pressure sensor abnormality 1

 

DTC C1924: Pressure sensor abnormality 2

 

DTC C1934: Pressure sensor abnormality 3

 

DTC C1944: Pressure sensor 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-14

).

.

DTC SET CONDITION

DTC C1913, C1923, C1933, C1943

• The TPMS transmitter detects if the wheel is rotated by the 

acceleration sensor and sends the signals to WCM. When 
the TPMS transmitter judges that the acceleration sensor is 
failed, the failure signal is send to WCM, and WCM sets this 
code.