Outlander 4WD L4-2.4L (4B12) (2008)
CAN Communication Circuit (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
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Malfunction of the connector [joint connector (CAN3) or ECM connector improperly connected]
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Malfunction of the wiring harness [open circuit between the ECM and the joint connector (CAN3), power supply circuit to the ECM]
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Malfunction of the ECM
DIAGNOSIS
Required Special Tools:
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MB991223: Harness Set
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MB992006: Extra Fine Probe
STEP 1. Check joint connector (CAN3) C-01 and ECM connector B-11 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-01 and ECM connector B-11 in good condition?
YES : Go to Step 2.
NO : Repair the damaged parts.
STEP 2. Check the wiring harness between joint connector (CAN3) C-01 and ECM connector B-11.
CAUTION: Strictly observe the specified wiring harness repair procedure.
1. Disconnect joint connector (CAN3) C-01 and ECM connector B-11, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN3) C-01 (terminal No.4) and ECM connector B-11 (terminal No.90)
3. Check the wiring harness between joint connector (CAN3) C-01 (terminal No.15) and ECM connector B-11 (terminal No.91)
Q: Is the wiring harness between joint connector (CAN3) C-01 and ECM connector B-11 in good condition?
YES : Check the power supply circuit of the ECM. Refer to MFI Troubleshooting <2.4L Engine> or MFI Troubleshooting <3.0L Engine>.
NO : Repair the wiring harness between joint connector (CAN3) C-01 and ECM connector B-11.
Diagnostic Item 12
DIAGNOSTIC ITEM 12: Diagnose The Lines Between The ETACS-ECU And Joint Connector (CAN2).
CAUTION: When servicing a CAN bus line, ground yourself by touching a metal object such as an unpainted water pipe. If you fail to do so, a
component connected to the CAN bus line may be damaged.