Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK STARTER RELAY

Turn ignition switch ON.

Check voltage between BCM harness connector and ground under the following condition.

Fig 1: Checking Voltage Between BCM Harness Connector And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

VOLTAGE REFERENCE CHART

BCM		Ground	Transmission select lever position	Condition	Voltage (V)
Connector	Terminal	Ground	Transmission select lever position	Condition	Voltage (V)
M21	132	Ground	Park	Ignition switch cranking or request to start	Battery voltage
M21	132	Ground	Park	Other than above	0

Is the measurement value within the specification?

YES: GO TO 3.

NO: GO TO 2.

CHECK STARTER RELAY CIRCUIT

Turn ignition switch OFF.
Disconnect BCM harness connector and IPDM E/R harness connector.

Check continuity between IPDM E/R harness connector and BCM harness connector.

CONTINUITY REFERENCE CHART

IPDM		E/R BCM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
A: E17	46	B: M21	132	Yes

Check continuity between IPDM E/R harness connector and ground.

CONTINUITY REFERENCE CHART

IPDM E/R		Ground	Continuity
Connector	Terminal	Ground	Continuity
A: E17	46	Ground	No

Fig 2: Checking Continuity Between IPDM E/R Harness Connector And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal?

YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

NO: Repair harness or connector.

CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".

Inspection End.