Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK SELF DIAGNOSTIC RESULT
Perform "Self Diagnostic Result" of "IPDM E/R" using CONSULT.

Are any DTCs detected?

YES

Refer to DTC Index .

NO

GO TO 2 .

CHECK IGNITION RELAY-1 SIGNAL

Check voltage between BCM connector M20 and ground.

BCM		Ground	Condition	Voltage (Approx.)
Connector	Terminal
M20	70	-	Ignition: OFF	Battery voltage
			Ignition: ON	0V

Is the inspection result normal?

YES

Replace IPDM E/R. Refer to Removal and Installation .

GO TO 3

CHECK IGNITION RELAY-1 POWER SUPPLY

Check voltage between IPDM E/R connector E19 and ground.

IPDM E/R		Ground	Condition	Voltage (Approx.)
Connector	Terminal
E19	43	-	Ignition: OFF	Battery voltage
			Ignition: ON	0V

Is the inspection result normal?

YES

GO TO 4

Replace IPDM E/R. Refer to Removal and Installation .

CHECK IGNITION RELAY-1 SIGNAL CIRCUIT CONTINUITY

Turn ignition switch OFF.
Disconnect BCM connector M20 and IPDM E/R connector E19.

Check continuity between BCM connector M20 and IPDM E/R connector E19.

BCM		IPDM E/R		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M20	70	E19	43	Yes

Check continuity between BCM connector M20 and ground.

BCM		Ground	Continuity
Connector	Terminal
M20	70	-	No

Is the inspection result normal?

YES

Replace BCM. Refer to Removal and Installation .

Repair or replace harness or connectors.