Nissan Sentra manuals

Nissan Sentra Service Manual: 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 relay is energized, power flows through fuses 43 and 44, located in the ipdm e/r. Power then flows to the front combination lamps to the headlamp low beam.

Component function check

1.Check headlamp (lo) 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 is turned on.

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 is turned on.

Lo : headlamp on

Off : headlamp off

Is the inspection result normal? YES >> Headlamp (LO) is normal.

NO >> Refer to EXL-90, "Diagnosis Procedure".

Diagnosis procedure

Regarding Wiring Diagram information, refer to EXL-33, "Wiring Diagram".

1.Check headlamp (lo) 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 (lo) output voltage

Consult


  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 (lo) 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.

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 (lo) ground circuit

Is the inspection result normal?


Is the inspection result normal? Yes >> inspect the headlamp bulb.

No >> repair or replace the harness or connector.

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 ...

Daytime light relay circuit
Description The bcm sends a daytime light request to the ipdm e/r via the can communication lines. The power flows through fuse 29 located in fuse block j/b to the daytime light relay coil. When ...

Other materials:

On board refueling vapor recovery(ORVR)
Component Function Check 1.CHECK ORVR FUNCTION Check whether the following symptoms are present. Fuel odor from EVAP canister is strong Cannot refuel/Fuel odor from the fuel filler opening is strong while refueling. Are any symptoms present? YES >> Proceed to EC-468, "Diagn ...

P0962 Pressure control solenoid A
DTC Logic DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition Possible causes P0962 PRESSURE CONTROL SOLENOID A (Pressure Control Solenoid A Control Circuit Low) The line pressure solenoid valve current is 200 ...

Recommended fluids and lubricants
Fluids and lubricants *1: For additional information, see “engine oil recommendation”. *2: As an alternative to this recommended oil, sae 5w-30 conventional petroleum based oil may be used and meet all specifications and requirements necessary to maintain the new vehicle limited ...

© 2014-2021 Copyright www.nisentra.com