Trouble Diagnoses Symptom Chart

WARNING: This page is about a different car, the 2005 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.

Make sure other systems using the signal of the following systems operate normally.

TROUBLE DIAGNOSES SYMPTOMS REFERENCE

Symptom	Diagnoses / Service procedure	Reference
Rear window defogger and door mirror defoggers do not operate. (With heated mirrors)	1. BCM power supply and ground circuit check	BCM POWER SUPPLY AND GROUND CIRCUIT CHECK
	2. IPDM E/R auto active test check	AUTO ACTIVE TEST
	3. Rear window defogger switch circuit check	REAR WINDOW DEFOGGER SWITCH CIRCUIT CHECK
	4. Replace IPDM E/R	REMOVAL AND INSTALLATION OF IPDM E/R
Rear window defogger does not operate. (Without heated mirrors)	1. BCM power supply and ground circuit check	BCM POWER SUPPLY AND GROUND CIRCUIT CHECK
	2. IPDM E/R auto active test check	AUTO ACTIVE TEST
	3. Rear window defogger switch circuit check	REAR WINDOW DEFOGGER SWITCH CIRCUIT CHECK
	4. Rear window defogger circuit check	REAR WINDOW DEFOGGER CIRCUIT CHECK
	5. Filament check	FILAMENT CHECK
	6. Replace IPDM E/R	REMOVAL AND INSTALLATION OF IPDM E/R
Rear window defogger does not operate but both door mirror defoggers operate. (With heated mirrors)	1. Rear window defogger circuit check	REAR WINDOW DEFOGGER CIRCUIT CHECK
	2. Filament check	FILAMENT CHECK
	3. Replace IPDM E/R	REMOVAL AND INSTALLATION OF IPDM E/R
Both door mirror defoggers do not operate but rear window defogger operates. (With heated mirrors)	1. Door mirror defogger power supply circuit check	DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT CHECK (WITH HEATED MIRRORS)
	2. Replace IPDM E/R	REMOVAL AND INSTALLATION OF IPDM E/R
Door mirror LH defogger does not operate. (With heated mirrors)	1. Door mirror LH defogger circuit check	DOOR MIRROR LH DEFOGGER CIRCUIT CHECK (WITH HEATED MIRRORS)
Door mirror RH defogger does not operate. (With heated mirrors)	1. Door mirror RH defogger circuit check	DOOR MIRROR RH DEFOGGER CIRCUIT CHECK (WITH HEATED MIRRORS)
Rear window defogger switch does not light, but rear window defogger operates.	1. Replace front air control	CONTROL UNIT