Inspection Procedure

WARNING: This page is about a different car, the 2008 Nissan Maxima. 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 (connector side and harness side).
  - Harness connector M81
  - Harness connector B20
OK or NG

OK: GO TO 2.

NG: Repair the terminal and connector.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Disconnect the harness connectors M81 and B20.
Check the continuity between the data link connector and the harness connector.

HARNESS CONTINUITY (OPEN CIRCUIT) - M81 AND B20

Data link connector		Harness connector		Continuity
Connector No.	Terminal No.	Connector No.	Terminal No.	Continuity
M22	6	M81	9	Yes
M22	14	M81	25	Yes

OK or NG

OK: GO TO 3.

NG: Repair the main line between the data link connector and the harness connector M81.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Disconnect the harness connectors B37 and B400.
Check the continuity between the harness connectors.

HARNESS CONTINUITY (OPEN CIRCUIT) - B37 AND B400

Harness connector		Harness connector		Continuity
Connector No.	Terminal No.	Connector No.	Terminal No.	Continuity
B20	9	B37	10	Yes
B20	25	B37	9	Yes

OK or NG

OK:

Present error: Check the following items again.
- Decision of CAN system type.
- Not received CONSULT-III data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR).
- Not copied from on-board diagnosis.
- Procedure for detecting root cause.
Past error: Error was detected in the main line between the data link connector and the driver seat control unit.

NG: Repair the main line between the harness connector B20 and the harness connector B37.