Lancer Evolution L4-2.0L Turbo (4B11T/C) (2010)
CAN-C Communication Circuit [TC-SST] (Part 2)
FUNCTION
If the scan tool MB991958 cannot communicate with the ECM, this diagnosis result will be set.
TROUBLE JUDGMENT CONDITIONS
If a communication flag is not set for the ECM, the ETACS-ECU determines that there is a failure.
TROUBLESHOOTING HINTS
-
Malfunction of the connector [joint connector (CAN3) [M/T], joint connector (CAN4) [TC-SST], ECM connector or intermediate connector
[TC-SST] improperly connected]
-
Malfunction of the wiring harness [open circuit between the ECM connector and the joint connector (CAN3) [M/T] or the joint connector (CAN4)
[TC-SST], power supply circuit to the ECM]
-
Malfunction of the ECM
DIAGNOSIS
Required Special Tools:
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MB991223: Harness Set
-
MB992006: Extra Fine Probe
-
MB992110: Power plant ECU check harness
STEP 1. Check joint connector (CAN3) C-127 [M/T], joint connector (CAN4) A-14 [TC-SST], ECM connector B-10 and intermediate
connector A-13 [TC-SST] 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 (CAN3) C-127 [M/T], joint connector (CAN4) A-14 [M/T], ECM connector B-10 and intermediate connector A-13 [TC-SST]
in good condition?
YES : Go to Step 2.
NO : Repair the damaged parts.
STEP 2. Check the wiring harness between joint connector (CAN3) C-127 [M/T] or joint connector (CAN4) A-14 [TC-SST] and ECM
connector B-10.
CAUTION: Strictly observe the specified wiring harness repair procedure.
1. Disconnect joint connector (CAN3) C-127 and ECM connector B-10, and check the wiring harness