Nissan Murano: Dtc/circuit Diagnosis / U1002 System Comm (can)

DTC Description

DTC DETECTION LOGIC

POSSIBLE CAUSE

NOTE:

Confirm if DTC is PAST or CRNT. If DTC is CRNT, proceed with Diagnosis Procedure. If DTC is PAST, clear the DTC. Do not replace the ABS actuator and electric unit (control unit) for a PAST DTC.

FAIL-SAFE

The following functions are suspended:

• VDC function

• TCS function

• Brake assist function

• Hill start assist function

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always ignition switch OFF and wait at least 10 seconds before conducting the next test.

GO TO 2.

DTC REPRODUCTION PROCEDURE

CONSULT

1. Ignition switch OFF.

   NOTE:

   Wait at least 10 seconds after ignition switch OFF.

2. Start the engine.

   NOTE:

   Wait at least 10 seconds after starting the engine.

3. Select “Self Diagnostic Result” mode of “ABS”.

Is DTC “U1002” detected?

“CRNT” is displayed: Proceed to DTC Diagnosis Procedure.

“PAST” is displayed: Inspection End (Erase the memory of “Self Diagnostic Result” mode of “ABS”).

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

Confirmation after repair: Inspection End.

CAUTION:

• Never apply 7.0 V or more to the measurement terminal.

• Use a tester with open terminal voltage of 7.0 V or less.

• Ignition switch OFF and disconnect the battery cable from the negative terminal when checking the harness.

CHECK CAN DIAGNOSIS SUPPORT MONITOR

CONSULT

1. Select “CAN Diagnosis Support Monitor” mode of “ABS”.

2. Check the malfunction history between each control unit connected to ABS actuator and electric unit (control unit).

Check the result of “PAST”?

All items are “OK”. Check the intermittent incident. Refer to Intermittent Incident.

“TRANSMIT DIAG” is other than “OK”. GO TO 2.

A control unit other than ABS actuator and electric unit (control unit) is anything other than “OK”. GO TO 3.

CHECK TRANSMITTING SIDE UNIT

CONSULT

Check the ABS actuator and electric unit (control unit) harness connector terminals No. 14 and 26 for damage or loose connection.

Is the inspection result normal?

Erase the memory of “Self Diagnostic Result” mode of “ABS”. Then select “Self Diagnostic Result” mode of “ABS”.

Recheck the terminals for damage or loose connection.

CHECK APPLICABLE CONTROL UNIT

Check the terminals of each harness connector for damage or loose connection.

Is the inspection result normal?

Erase the memory of “Self Diagnostic Result” mode of applicable control unit. Then select “Self Diagnostic Result” mode of applicable control unit.

Recheck the terminals for damage or loose connection.