Mitsubishi Evolution X. Manual — part 620
DIAGNOSIS
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WIRELESS CONTROL MODULE (WCM)
42C-97
STEP 5. Using scan tool MB991958, check data list.
Check the signals related to the keyless entry system opera-
tion.
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)
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Check the ETACS data list.
• Close the driver's door.
• Close the passenger's door.
• Close the RH-side rear door.
• Close the LH-side rear door.
• Close the trunk lid.
• Remove the ignition key from the ignition key cylinder.
OK: Normal condition are displayed.
Item No.
Item name
Normal
condition
Item 256
Dr door ajar switch
Close
Item 257
As door ajar switch
Close
Item 258
RR door ajar switch
Close
Item 259
RL door ajar switch
Close
Item 260
Trunk/gate trunk ajar switch Close
Item 264
Handle lock switch
Key in
→ Key out
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
DIAGNOSIS
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WIRELESS CONTROL MODULE (WCM)
42C-98
Q: Are the check result normal?
YES <Normal conditions are displayed for all the
items.> : Go to Step 6.
NO <Normal condition is not displayed for item No.
256.> : Refer to GROUP 54A, Inspection Procedure 5:
ETACS-ECU does not receive any signal from the
front door switch (LH)
.
NO <Normal condition is not displayed for item No.
257.> : Refer to GROUP 54A, Inspection Procedure 6:
ETACS-ECU does not receive any signal from the
front door switch (RH)
.
NO <Normal condition is not displayed for item No.
258.> : Refer to GROUP 54A, Inspection Procedure 8:
ETACS-ECU does not receive any signal from the
rear door switch (RH)
NO <Normal condition is not displayed for item No.
260.> : Refer to GROUP 54A, Inspection Procedure 9:
ETACS-ECU does not receive any signal from the
trunk lid latch.
NO <Normal condition is not displayed for item No.
264.> : Refer to GROUP 54A, Inspection Procedure 3:
ETACS-ECU does not receive any signal from the key
reminder switch.
STEP 6. Using scan tool MB991958, check pulse check.
Check the signals related to the keyless entry system opera-
tion.
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)
(2) Confirm the ETACS pulse check.
• Remove the ignition key from the ignition key cylinder.
OK: The scan tool (M.U.T.-III) tone alarm sounds.
Q: Is the check result normal?
YES : Go to Step 7.
NO : Refer to "Signals from transmitter switches are not
received
."
Item name
Conditions
Transmitter switch
Turn the switch ON/OFF.
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
DIAGNOSIS
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WIRELESS CONTROL MODULE (WCM)
42C-99
STEP 7. Check receiver antenna assembly connector D-14
and WCM connector C-07 for loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Q: Is the receiver antenna assembly connector D-14 and
WCM connector C-07 in good condition?
YES : Go to Step 8.
NO : Repair the defective connector.
DIAGNOSIS
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WIRELESS CONTROL MODULE (WCM)
42C-100
STEP 8. Check the wiring harness between the receiver
antenna assembly connector D-14 (terminal Nos. 1, 3 and
5) and the WCM connector C-07 (terminal Nos. 1, 3 and 5)
for open circuit.
(1) Disconnect receiver antenna assembly connector D-14 and
WCM connector C-07, and check the wiring harness.
(2) Check the wiring harness between receiver antenna
assembly connector D-14 (terminal No.1) and WCM
connector C-07 (terminal No.1).
OK: Continuity exists (2
Ω or less)
(3) Check the wiring harness between receiver antenna
assembly connector D-14 (terminal No.3) and WCM
connector C-07 (terminal No.3).
OK: Continuity exists (2
Ω or less)
(4) Check the wiring harness between receiver antenna
assembly connector D-14 (terminal No.5) and WCM
connector C-07 (terminal No.5).
OK: Continuity exists (2
Ω or less)
Q: Is the wiring harness between receiver antenna
assembly connector D-14 (terminal Nos. 1, 3 and 5) and
the WCM connector C-07 (terminal Nos. 1, 3 and 5) in
good condition?
YES : Go to Step 9.
NO (receiver antenna assembly connector D-14 terminal
No.1
− WCM connector C-07 terminal No.1.) : Repair the
wiring harness between receiver antenna assembly
connector D-14 (terminal No.1) and WCM connector
C-07 (terminal No.1).
NO (receiver antenna assembly connector D-14 terminal
No.3
− WCM connector C-07 terminal No.3.) : Repair the
wiring harness between receiver antenna assembly
connector D-14 (terminal No.3) and WCM connector
C-07 (terminal No.3).
NO (receiver antenna assembly connector D-14 terminal
No.5
− WCM connector C-07 terminal No.5.) : Repair the
wiring harness between receiver antenna assembly
connector D-14 (terminal No.5) and WCM connector
C-07 (terminal No.5).
AC709707HW
Harness side: D-14
Harness side: C-07
AC709707 HX
Harness side: D-14
Harness side: C-07
AC709707HY
Harness side: D-14
Harness side: C-07
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