4AT RE4F03C

U0140 LOST COMMUNICATION (BCM)

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

1.Start engine and wait for at least 5 seconds.
2.Check the DTC.
Is "U0140" detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure

For the diagnosis procedure, refer to "Trouble Diagnosis Flow Chart" Trouble Diagnosis Flow Chart.