Nissan Sentra Service Manual: Headlamp (hi) circuit
Description
The IPDM E/R (intelligent power distribution module engine room) controls the headlamp high relay based on inputs from the BCM over the CAN communication lines. When the headlamp high relay is energized, power flows through fuses 41 and 42, located in the IPDM E/R. Power then flows to the front combination lamps to the headlamp high beam.
Component Function Check
1.CHECK HEADLAMP (HI) OPERATION
WITHOUT CONSULT
- Start IPDM E/R auto active test. Refer to EXL-24, "Diagnosis Description" (with Intelligent Key system) or EXL-28, "Diagnosis Description" (without Intelligent Key system).
- Check that the headlamp switches to the high beam.
NOTE:
HI/LO is repeated 1 second each when using the IPDM E/R auto active test.
CONSULT
- Select EXTERNAL LAMP of IPDM E/R active test item.
- While operating the test items, check that the headlamp switches to the high beam.
HI : Headlamp switches to the high beam.
OFF : Headlamp OFF
Is the inspection result normal? YES >> Headlamp (HI) circuit is normal.
NO >> Refer to EXL-88, "Diagnosis Procedure".
Diagnosis Procedure
Regarding Wiring Diagram information, refer to EXL-33, "Wiring Diagram".
1.Check headlamp (HI) Fuses
- Turn the ignition switch OFF.
- Check that the following fuses are not blown.
Is the fuse blown? YES >> Replace the fuse after repairing the affected circuit.
NO >> GO TO 2.
2.Check headlamp (HI) output voltage
Consult active test
- Turn the ignition switch off.
- Disconnect the front combination lamp harness connector in question.
- Turn the ignition switch on.
- Select external lamp of ipdm e/r active test item.
- With external lamp on, check the voltage between the combination lamp connector and ground.
Is the inspection result normal? Yes >> go to 4.
No >> go to 3.
3.Check headlamp (hi) circuit for open
- Turn the ignition switch off.
- Disconnect ipdm e/r connector
- Check continuity between the IPDM E/R harness connector and the front combination lamp harness connector.
Is the inspection result normal? Yes >> replace ipdm e/r. Refer to pcs-30, "removal and installation" (with intelligent key system) or pcs-58, "removal and installation" (without intelligent key system).
No >> repair or replace the harness or connector.
4.Check front combination lamp (hi) ground circuit
Check continuity between the front combination lamp harness connector terminal and ground.
Is the inspection result normal? YES >> Inspect the headlamp bulb.
NO >> Repair or replace the harness or connector.
Headlamp (lo) circuit
Description
The ipdm e/r (intelligent power distribution module engine room) controls the
headlamp low relay based on
inputs from the bcm over the can communication lines. When the headlamp low
...
Other materials:
VDC/TCS/ABS
Symptom Table
If ABS warning lamp and SLIP indicator lamp turn ON, perform
self-diagnosis.
NOTE:
1: The ABS does not operate when the speed is 10 km/h
(6 MPH) or less.
2: Under the following conditions, ABS is activated
and vibration is felt when brake pedal is lightly depr ...
Service data and specifications
(sds)
Periodical Maintenance Specification
ENGINE COOLANT CAPACITY (APPROXIMATE)
Radiator
Thermostat
Water Control Valve
...
Towing a trailer
Do not tow a trailer with your vehicle.
Flat towing
Towing your vehicle with all four wheels on the
ground is sometimes called flat towing. This
method is sometimes used when towing a vehicle
behind a recreational vehicle, such as a motor
home.
CAUTION
Failure to follow these guidelines c ...
