Nissan Altima 2007-2012 Service Manual: Rear window defogger relay
Description
Power is supplied to the rear window defogger with BCM control.
Component Function Check
1. CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT
Check that an operation noise of rear window defogger relay [located in fuse block (J/B)] can be heard when turning the rear window defogger switch ON.
Is the inspection result normal? YES >> Rear window defogger relay power supply circuit is OK.
NO >> Refer to DEF-11, "Diagnosis Procedure".
Diagnosis Procedure
1. CHECK REAR WINDOW DEFOGGER RELAY GROUND CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between BCM connector and ground.
Is the inspection result normal? YES >> Rear window defogger power supply circuit is OK.
NO >> GO TO 2
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and fuse block (J/B).
3. Check continuity between BCM connector (A) and fuse block (J/ B) connector (B).
Is the inspection result normal? YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK REAR WINDOW DEFOGGER RELAY
Check rear window defogger relay.
Refer to DEF-12, "Component Inspection".
Is the inspection result normal? YES >> GO TO 4
NO >> Replace rear window defogger relay.
4. CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to GI-42, "Intermittent Incident" Is the inspection result normal? YES >> Check the following.
• Battery power supply circuit.
• Fuse block (J/B).
NO >> Repair or replace the malfunctioning parts.
Component Inspection
1. CHECK REAR WINDOW DEFOGGER RELAY
Check rear window defogger relay.
Is the inspection result normal? YES >> Inspection End.
NO >> Replace rear window defogger relay.
Rear window defogger switch
Description • The rear window defogger is operated by turning the rear window defogger switch ON. • Turns the indicator lamp in the rear window defogger switch ON when operating the rear ...Rear window defogger power supply and ground circuit
Description Heats the heating wire with the power supply from the rear window defogger relay to prevent the rear window from fogging up. Component Function Check 1. CHECK REAR WINDOW DEFOGGER ...Other materials:
Difference between predicted and actual distances
The distance guide line and the vehicle width
guide line should be used as a reference only
when the vehicle is on a level, paved surface. The
distance viewed on the monitor is for reference
only and may be different than the actual distance
between the vehicle and displayed objects.
Backing ...
IPDM E/R (Intelligent power distribution
module engine room)
Reference Value
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
PHYSICAL VALUES
Wiring Diagram — Sedan
Fail Safe
CAN COMMUNICATION CONTROL
When CAN communication with ECM and BCM is impossible, IPDM E/R performs
fail-safe control. After CAN
communication recov ...
B2605 PNP switch
Description
BCM confirms the shift position with the following 4 signals.
• CVT selector lever
• P/N position switch
• P position signal from IPDM E/R (CAN)
• P position signal from TCM (CAN)
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B2605 is displayed with DTC U1000, first ...