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 FOR IPDM E/R
1. Perform "Self Diagnostic Result" of "IPDM E/R" using CONSULT.
2. Erase DTCs.
3. Turn ignition switch OFF.
4. Turn ignition switch ON.
5. Perform "Self Diagnostic Result" of "IPDM E/R".
Are any DTCs detected?

YES

Refer to DTC Index .

NO

GO TO 2

CHECK IGNITION RELAY-1 SIGNAL

Check voltage between BCM connector M20 terminal 70 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 SIGNAL 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

Is the inspection result normal?

YES

Replace BCM. Refer to Removal and Installation .

Repair or replace harness or connectors.