Lancer L4-2.0L (4B11) (2008)
CAN Communication Circuit (Part 2)
FUNCTION
If the scan tool MB991958 cannot communicate with the WCM, this diagnosis result will be set.
TROUBLE JUDGEMENT CONDITIONS
If a communication flag is not set for the WCM, the ETACS-ECU determines that there is a failure.
TROUBLESHOOTING HINTS
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Malfunction of the connector [joint connector (CAN1), WCM connector improperly connected]
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Malfunction of the wiring harness [open circuit between the WCM connector and the joint connector (CAN1), power supply circuit to the WCM]
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Malfunction of the WCM
DIAGNOSIS
Required Special Tools:
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MB991223: Harness Set
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MB992006: Extra Fine Probe
STEP 1. Check joint connector (CAN1) C-06 and WCM connector C-09 for loose, corroded or damaged terminals, or terminals pushed back in
the connector.
CAUTION: The strand end of the twisted wire should be within 10 cm (4 inches) from the connector.
Q: Are joint connector (CAN1) C-06 and WCM connector C-09 in good condition?
YES : Go to Step 2.
NO : Repair the damaged parts.
STEP 2. Check the wiring harness between joint connector (CAN1) C-06 and WCM connector C-09.
CAUTION: Strictly observe the specified wiring harness repair procedure.
1. Disconnect joint connector (CAN1) C-06 and WCM connector C-301, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 5) and WCM connector C-09 (terminal 11)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 16) and WCM connector C-09 (terminal 10)
Q: Is the wiring harness between joint connector (CAN1) C-06 and WCM connector C-09 in good condition?