Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IPDM E/R INPUT SIGNAL

Turn ignition switch OFF.

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

VOLTAGE SPECIFICATION

(+)		(-)	Condition		Voltage (V) (Approx.)
IPDM E/R
Connector	Terminal
E17	63	Ground	Steering lock unit	Lock	12
	63			Unlock	0
	65			Lock	0
	65			Unlock	12

Is the inspection result normal?

YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".

NO: GO TO 2.

CHECK IPDM E/R INPUT SIGNAL CIRCUIT

Disconnect IPDM E/R connector and steering lock unit connector.

Check continuity between IPDM E/R harness connector and steering lock unit harness connector.

CONTINUITY SPECIFICATION

IPDM E/R		Steering lock unit		Continuity
Connector	Terminal	Connector	Terminal	Continuity
E17	63	M12	8	Existed
E17	65	M12	3	Existed

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

CONTINUITY SPECIFICATION

IPDM E/R		Ground	Continuity
Connector	Terminal
E17	63		Not existed
	65

Is the inspection result normal?

YES: GO TO 3.

NO: Repair or replace harness.

REPLACE STEERING LOCK UNIT
1. Replace steering lock unit.
2. Perform the service procedure for steering lock unit replacement. Refer to the CONSULT-III Operation Instructions NATS-IVIS/NVIS.
  INSPECTION END