Nissan Murano: Dtc/circuit Diagnosis / Its Can Communication Circuit

Diagnosis Procedure

CHECK CAN DIAGNOSIS

Check the CAN diagnosis results from CONSULT to see that the Nissan Murano vehicle CAN communication circuit has no malfunction.

Are the vehicle CAN communication circuits normal?

GO TO 2.

Check and repair Nissan Murano vehicle CAN communication circuit.

CONNECTOR INSPECTION

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the terminals and connectors of the ADAS control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

GO TO 3.

Repair the terminal and connector.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the ADAS control unit harness connector.

2. Check the continuity between the ADAS control unit harness connector terminals.

   ADAS control unit harness connector			Continuity
   Connector No.	Terminal No.
   M182	15	20	Existed
   	3	19	Existed

Is the inspection result normal?

GO TO 4.

Repair the ADAS control unit branch line. (ITS CAN communication circuit side).

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

1. Disconnect all the unit connector on ITS CAN communication system.

2. Check the continuity between the ADAS control unit harness connector terminals.

   ADAS control unit harness connector			Continuity
   Connector No.	Terminal No.
   M182	15	3	Not existed

Is the inspection result normal?

GO TO 5.

Check the harness and repair the root cause.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the ADAS control unit harness connector and the ground.

Is the inspection result normal?

GO TO 6.

Check the harness and repair the root cause.

CHECK TERMINATION CIRCUIT

1. Remove the ADAS control unit.

2. Check the resistance between the ADAS control unit terminals.

   ADAS control unit		Resistance (Ω)
   Terminal No.
   15	3	Approx. 108 – 132
   20	19	Approx. 108 – 132

Is the inspection result normal?

GO TO 7.

Replace the ADAS control unit.

CHECK SYMPTOM

Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced.

Inspection result

GO TO 8.

Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.

CHECK UNIT REPRODUCTION

Perform the reproduction test as per the following procedure for each unit.

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Disconnect one of the unit connectors of ITS CAN communication circuit.

   NOTE:

   ADAS control unit has two termination circuits. Check other units first.

4. Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced.

   NOTE:

   Although unit-related error symptoms occur, do not confuse them with other symptoms.

Inspection result

Connect the connector. Check other units as per the above procedure.

Replace the unit whose connector was disconnected.