Nissan Sentra Service Manual: 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
Check that the heating wire of rear window defogger is heated when turning the rear window defogger switch on.
Is the inspection result normal? Yes >> rear window defogger is ok.
No >> refer to def-33, "diagnosis procedure".
Diagnosis procedure
Regarding wiring diagram information, refer to def-20, "wiring diagram".
1. Check fuses
Check if any of the following fuses in IPDM E/R are blown.
Is the inspection result normal? Yes >> go to 2.
No >> replace the blown fuse after repairing the affected circuit.
2. Check rear window defogger power supply circuit
- Turn ignition switch ON.
- Check voltage between ipdm e/r connector and ground.
Is the inspection result normal? YES >> GO TO 3.
NO >> Perform rear window defogger relay diagnosis. Refer to DEF-32, "Diagnosis Procedure".
3. Check power supply circuit
- Turn ignition switch on.
- Check voltage between rear window defogger connector and ground.
Is the inspection result normal? YES >> GO TO 4.
NO >> GO TO 5.
4. Check ground circuit
- Turn ignition switch off
- Disconnect rear window defogger.
- Check continuity between rear window defogger connector and ground.
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair or replace harness.
5. Check harness continuity
- Turn ignition switch OFF.
- Disconnect IPDM E/R.
- Check continuity between ipdm e/r connector and condenser connector.
Is the inspection result normal? Yes >> replace condenser. Refer to def-49, "removal and installation".
No >> replace or repair harness.
6. Check filament
Check filament.
Refer to DEF-34, "Component Inspection".
Is the inspection result normal? YES >> Refer to GI-39, "Intermittent Incident".
NO >> Repair filament. Refer to DEF-47, "Inspection and Repair".
Component inspection
1. Check filament
Check the filament for damage or open circuits.
Refer to DEF-47, "Inspection and Repair".
Is the inspection result normal? YES >> Inspection End.
NO >> Repair filament. Refer to DEF-47, "Inspection and Repair".
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
Turn ignition switch ON.
Check ...
Driver side door mirror defogger
Description
Heats the heating wire with the power supply from the rear window defogger
relay to prevent the door mirror
from fogging up.
Component Function Check
Check that heating wire of doo ...
Other materials:
B142X Collision detection
Description
DTC B142X COLLISION DETECTION
The air bag diagnosis sensor unit will set this DTC if it has detected a
collision which has resulted in a deployment
of one or more air bags or pre-tensioners. If this DTC is detected after a SRS
repair, the air bag diagnosis
sensor unit has not yet ...
Brake fluid
Drain and Refill
CAUTION:
Do not spill or splash brake fluid on painted surfaces. Brake
fluid may damage paint. If brake fluid is
splashed on painted areas, wash it away with water immediately.
Prior to repair, turn the ignition switch OFF, disconnect the ABS
actuator and electric uni ...
System description
Component parts
AUTOMATIC DOOR LOCK/UNLOCK FUNCTION
AUTOMATIC DOOR LOCK/UNLOCK FUNCTION
: Component Parts Location
BCM
(view with instrument panel removed)
Main power window and door lock/unlock
switch
Power window and door lock/unlock
switch RH
Front door lock key cylinder ...
