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:
Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
DETAILED FLOW
1.LISTEN TO CUSTOMER COMPLAINT
Listen to customer complaint. Get detailed information about the conditions
and environment when the symptom
occurs.
>> GO TO 2.
2.VERIFY THE SYMPTOM WITH OPERATIONAL CHECK
Verify the symptom with ...
Basic inspection
Diagnosis and repair work flow
Work flow
OVERALL SEQUENCE
Detailed flow
1.Get information for symptom
Get detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurs)
Check operation condition of the function tha ...
Audio system voice commands
To access the audio system voice commands:
Press the button.
Say “Audio”
Speak a command from the following available
commands:
Play (AM, FM, etc.)
Allows user to select radio band
Tune AM (number)
Allows user to tune directly to a desired AM
frequency
Tune FM (number)
...
