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:
System description
Component parts
Component parts location
BCM (view with instrument panel removed)
ECM
IPDM E/R
Combination meter
Security indicator lamp
CVT shift selector (park position
switch) (view with center console removed)
Stop lamp switch
Push button ignition switch
NATS anten ...
U1010 control unit (can)
Description
Initial diagnosis of combination meter.
Dtc logic
Dtc detection logic
Dtc
Display contents of consult
Detection condition
Possible malfunction
U1010
CONTROL UNIT (CAN)
[U1010]
When detecting error during the initial diagnosis of
the can controlle ...
Automatic speed control device (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Switch Name and Function
SWITCHES AND INDICATORS
CRUISE indicator
SET indicator*
CANCEL switch
ACCEL/RES switch
COAST/SET switch
ASCD MAIN switch
On the combination meter
On the steering wheel
*: Not applicable
Set speed range
A ...
