Lancer Sportback L4-2.4L (4B12) (2010)
FUNCTION
If the scan tool MB991958 cannot communicate with the AWC-ECU, this diagnosis result will be set.
TROUBLE JUDGEMENT CONDITIONS
If a communication flag is not set for the AWC-ECU, the ETACS-ECU determines that there is a failure.
TROUBLESHOOTING HINTS
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Malfunction of the connector [joint connector (CAN2) or AWC-ECU connector improperly connected]
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Malfunction of the wiring harness [open circuit between the AWC-ECU and the joint connector (CAN2), power supply circuit to the AWC-ECU]
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Malfunction of the AWC-ECU
DIAGNOSIS
Required Special Tools:
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MB991223: Harness Set
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MB992006: Extra Fine Probe
STEP 1. Check joint connector (CAN2) C-05 and AWC-ECU connector C-51 and intermediate connector C-35 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 (CAN2) C-05 and AWC-ECU connector C-51 and intermediate connector C-35 in good condition?
YES : Go to Step 2.
NO : Repair the damaged parts.
STEP 2. Check the wiring harness between joint connector (CAN2) C-05 and AWC-ECU connector C-51 for open circuit.
CAUTION: Strictly observe the specified wiring harness repair procedure.
1. Disconnect joint connector (CAN2) C-05 and AWC-ECU connector C-51, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN2) C-05 (terminal 4) and AWC-ECU connector C-51 (terminal 4)
OK: Continuity exists (2 ohm or less)