Inspection Procedure

WARNING: This page is about a different car, the 2007 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 terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).
OK or NG

OK: GO TO 2.

NG: Repair the terminal and connector.

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect the connector of ECM.
Check the resistance between the ECM harness connector terminals.

HARNESS FOR OPEN CIRCUIT

ECM harness connector			Resistance (Ω)
Connector No.	Terminal No.		Resistance (Ω)
M82	94	86	Approx. 108 - 132

OK or NG

OK: GO TO 3.

NG: Repair the ECM branch line.

CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to "POWER SUPPLY AND GROUND CIRCUIT ".

OK or NG

OK:
- Present error: Replace the ECM. Refer to "PROCEDURE AFTER REPLACING ECM ".
- Past error: Error was detected in the ECM branch line.
NG: Repair the power supply and the ground circuit.