Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
  - ADAS control unit
  - CAN gateway
Is the inspection result normal?

YES

GO TO 2.

NO

Repair the terminal and connector.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Disconnect the connector of CAN gateway.

Check the continuity between the CAN gateway harness connector terminals.

CAN gateway harness connector			Continuity
Connector No.	Terminal No.
M5	4	6	Existed
	10	12	Existed

Is the inspection result normal?

YES

GO TO 3.

Check the harness and repair the root cause (CAN communication circuit 2 side).

CHECK HARNESS FOR OPEN CIRCUIT

Connect the connector of CAN gateway.
Disconnect the connector of ADAS control unit.

Check the resistance between the ADAS control unit harness connector terminals.

ADAS control unit harness connector			Resistance (Ohm)
Connector No.	Terminal No.
B104	1	2	Approx. 54 - 66

Is the measurement value within the specification?

YES

GO TO 4.

Replace the body No. 2 harness.

CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ADAS control unit. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

Replace the ADAS control unit. Refer to Removal and Installation .

YES

Error was detected in the ADAS control unit branch line.

NO

Repair the power supply and the ground circuit.