Nissan Murano: Dtc/circuit Diagnosis / U0100 Lost Communication (ecm A)

DTC Description

DTC DETECTION LOGIC

When the ignition switch is ON, TCM is unable to receive the CAN communications signal from ECM continuously for 2 seconds or more.

POSSIBLE CAUSE

• ECM

• Harness or connector (CAN communication line is open or shorted)

FAIL-SAFE

• Selector shock is large

• Start is slow

• Acceleration is slow

• Lock-up is not performed

CHECK DTC PRIORITY

WhenDTC U0100 is displayed together with DTC U0300, diagnose first the DTC U0300.

Is "U0300" detected?

Perform diagnosis of DTC U0300. Refer to Diagnosis Procedure.

GO TO 2.

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 3.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start the engine and wait for at least 5 seconds.

2. Check the DTC.

Is “U0100” detected?

Go to Diagnosis Procedure.

To check malfunction symptom before repair: Refer to Intermittent Incident.

Confirmation after repair: INSPECTION END

For the diagnosis procedure, refer to Trouble Diagnosis Flow .