Nissan Sentra Service Manual: Interior room lamp control circuit
Description
Controls each interior room lamp (ground side) by pwm signal.
Note:
Pwm signal control period is approximately 250 hz (in the gradual brightening/dimming).
Component function check
Caution:
Before performing the diagnosis, check that the following are normal.
- Interior room lamp power supply
- Room lamp bulb
- Map lamp bulb
1.Check interior room lamp control function
Consult active test
- Se the map lamp switch or room lamp switch to door.
- Turn ignition switch on.
- Select int lamp of bcm (int lamp) active test item.
- While operating the test items, check that each interior room lamp turns ON/OFF (gradual brightening/ dimming).
On : interior room lamp gradual brightening
Off : interior room lamp gradual dimming
Does the interior room lamp turns ON/OFF (gradual brightening/dimming)? YES >> Interior room lamp control circuit is normal.
NO >> Refer to INL-45, "Diagnosis Procedure".
Diagnosis procedure
Regarding Wiring Diagram information, refer to INL-17, "Wiring Diagram".
1.Check interior room lamp control output
Consult active test
- Turn ignition switch OFF
- Remove all the bulbs of room lamp and map lamp.
- Turn ignition switch on.
- Select int lamp of bcm (int lamp) active test item.
- While operating the test item, check continuity between BCM harness connector and ground.
Is the inspection result normal? Yes >> interior room lamp control circuit is operating normally.
Fixed on>>go to 3.
Fixed off>>go to 2.
2.Check interior room lamp control open circuit
- Turn ignition switch off.
- Disconnect bcm connector and room lamp and map lamp connector.
- Check continuity between BCM harness connector and room lamp harness connector.
Is the inspection result normal? Yes >> check interior room lamps for an open. If ng, replace lamp in question. Refer to inl-55, "removal and installation" (room lamp) or inl-52, "removal and installation" (map lamp). If ok, replace bcm. Refer to bcs-73, "removal and installation" (with intelligent key), bcs-126, "removal and installation" (without intelligent key).
No >> repair or replace harness or connector.
3.Check interior room lamp control short to ground
- Turn ignition switch off.
- Disconnect BCM connector.
- Check continuity between BCM harness connector and ground.
Is the inspection result normal? Yes >> check interior room lamps for an internal short to ground. If ng, replace lamp in question. Refer to inl-55, "removal and installation" (room lamp) or inl-52, "removal and installation" (map lamp). If ok, replace bcm. Refer to bcs-73, "removal and installation" (with intelligent key), bcs-126, "removal and installation" (without intelligent key).
No >> repair or replace harness or connector.
Battery saver output/power supply circuit
Description
Provides the battery saver output/power supply. Also cuts the power supply
when the interior lamp battery
saver is activated.
Component function check
1.Check battery saver output/po ...
Trunk room lamp circuit
Description
Controls the trunk room lamp (ground side) to turn the trunk room lamp on and
off.
Diagnosis Procedure
Regarding wiring diagram information, refer to inl-17, "wiring diagram" ...
Other materials:
P0327, P0328 KS
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0327
KNOCK SEN/CIRC-B1
(Knock sensor 1 circuit
low bank 1)
An excessively low voltage from the knock sensor
is sent to ECM.
...
The oil pressure warning lamp does not turn off
Description
The oil pressure warning lamp remains illuminated while the engine is running
(normal oil pressure).
Diagnosis procedure
1.Check combination meter input signal
Start the engine and select METER/M&A on CONSULT.
Observe oil w/l data monitor and the operation of the oil pres ...
Dtc/circuit diagnosis
Power supply and ground circuit
Audio unit
AUDIO UNIT : Diagnosis Procedure
Regarding wiring diagram information, refer to av-88, "wiring diagram".
1.Check fuse
Check that the following fuses are not blown.
Are the fuses blown?
Yes >> replace the blown fuse after repairing ...
