Nissan Sentra manuals

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


  1. 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).
  2. 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


  1. Select EXTERNAL LAMP of IPDM E/R active test item.
  2. 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

  1. Turn the ignition switch OFF.
  2. Check that the following fuses are not blown.

Is the fuse 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


  1. Turn the ignition switch off.
  2. Disconnect the front combination lamp harness connector in question.
  3. Turn the ignition switch on.
  4. Select external lamp of ipdm e/r active test item.
  5. With external lamp on, check the voltage between the combination lamp connector and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> go to 4.

No >> go to 3.

3.Check headlamp (hi) circuit for open

  1. Turn the ignition switch off.
  2. Disconnect ipdm e/r connector
  3. Check continuity between the IPDM E/R harness connector and the front combination lamp harness connector.

Is the inspection result normal?


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?


Is the inspection result normal? YES >> Inspect the headlamp bulb.

NO >> Repair or replace the harness or connector.

Dtc/circuit diagnosis
...

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:

Symptom diagnosis
Squeak and rattle trouble diagnoses Work Flow CUSTOMER INTERVIEW Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diagnostic Worksheet during the interview to document the facts and conditions when the noise occurs and any custome ...

Front disc brake
Brake Burnishing CAUTION: Burnish contact surfaces between brake pads and disc rotor according to the following procedure after refinishing the disc rotor, replacing brake pads or if a soft pedal occurs at very low mileage. Be careful of vehicle speed. Brakes do not operate firmly/sec ...

How to use the remote keyless entry function
The remote keyless entry function can operate all door locks using the remote keyless function of the Intelligent Key. The remote keyless function can operate at a distance of 33 ft (10 m) away from the vehicle. The operating distance depends upon the conditions around the vehicle. The remot ...

В© 2014-2021 Copyright www.nisentra.com