Nissan Sentra Service Manual: 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/power supply function
Consult
- Turn ignition switch on.
- Turn each interior lamp to the ON position.
- Interior room lamp
- Vanity mirror lamps
- Map lamp
- Trunk room lamp
- Select battery saver of bcm (battery saver) active test item.
- While operating the test item, check that each interior room lamp turns ON/OFF.
Off : interior room lamp off
On : interior room lamp on
Is the inspection result normal? Yes >> battery saver output/power supply circuit is normal.
No >> refer to inl-43, "diagnosis procedure".
Diagnosis procedure
Regarding wiring diagram information, refer to inl-17, "wiring diagram".
1.Check battery saver output/power supply output
Consult
- Turn ignition switch on.
- Select battery saver of bcm (battery saver) active test item.
- While operating the test item, check voltage between BCM connector and ground.
Is the inspection result normal? Yes >> go to 2.
No >> replace bcm after making sure battery saver output/power supply circuit is not shorted to voltage.
Refer to bcs-73, "removal and installation" (with intelligent key) or bcs-126, "removal and installation" (without intelligent key).
2.Check battery saver output/power supply open circuit
- Turn ignition switch off.
- Disconnect the following connectors.
- Bcm
- Interior room lamp
- Vanity mirror lamp LH
- Vanity mirror lamp RH
- Map lamp
- Trunk room lamp
- Check continuity between bcm connector and each interior lamp connector.
Is the inspection result normal? Yes >> go to 3.
No >> repair or replace the harness or connector.
3.Check battery saver output/power supply short circuit
Check continuity between BCM connector and ground.
Is the inspection result normal? YES >> Check that each interior room lamp has no internal short circuit.
NO >> Repair or replace the harness or connector.
Power supply and ground circuit
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Description
Controls each interior room lamp (ground side) by pwm signal.
Note:
Pwm signal control period is approximately 250 hz (in the gradual
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Component function check
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General Precautions
Do not operate the
engine for an extended period of time without proper exhaust ventilation.
Keep the work area well ventilated and free of any inflammable
materials. Special care should be taken when handling any inflammable
or poisonous materials, such as gasoline, refrigerant gas,
etc. Wh ...
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