Nissan Sentra Service Manual: Optical sensor
Description
The optical sensor measures ambient light and transmits the optical sensor signal to the bcm.
Component function check
1.Check optical sensor signal by consult
Consult
- Turn the ignition switch ON.
- Select opti sen of bcm (head lamp) data monitor item.
- Turn the lighting switch to AUTO.
*: Illuminates the optical sensor. The value may be less than the standard value if brightness is weak.
Is the inspection result normal? YES >> Optical sensor is normal.
NO >> Refer to EXL-103, "Diagnosis Procedure".
Diagnosis procedure
Regarding Wiring Diagram information, refer to EXL-53, "Wiring Diagram".
1.Check optical sensor power supply input
- Turn the ignition switch off
- Disconnect the optical sensor harness connector.
- Turn the ignition switch ON.
- Turn the lighting switch to auto.
- Check the voltage between the optical sensor harness connector and ground.
Is the inspection result normal? Yes >> go to 2.
No >> go to 3.
2.Check optical sensor ground circuit
- Turn the ignition switch off.
- Check continuity between the optical sensor harness connector and ground.
Is the inspection result normal? YES >> GO TO 4.
NO >> GO TO 5.
3.Check optical sensor power supply for open circuit
- Turn the ignition switch off.
- Disconnect the bcm harness connector.
- Check continuity between optical sensor harness connector and bcm harness connector.
- Check continuity between optical sensor harness connector and ground.
Is the inspection result normal? Yes >> replace bcm. Refer to bcs-73, "removal and installation".
No >> repair or replace the harness or connectors.
4.Check optical sensor signal open circuit
- Disconnect optical sensor connector and bcm connector.
- Check continuity between optical sensor harness connector and bcm harness connector.
- Check continuity between optical sensor harness connector and ground.
Is the inspection result normal? Yes >> replace the optical sensor. Refer to exl-130, "removal and installation".
No >> repair or replace harness or connectors.
5.Check optical sensor ground for open circuit
- Disconnect the bcm harness connector.
- Check continuity between optical sensor harness connector and bcm harness connector.
Is the inspection result normal? YES >> Replace BCM. Refer to BCS-73, "Removal and Installation".
NO >> Repair or replace harness or connector.
Turn signal lamp circuit
Description
The bcm monitors inputs from the combination switch to determine when to
activate the turn signals. The
bcm outputs voltage direction to the left and right turn signals during turn
...
Hazard switch
Component function check
1.Check hazard switch signal by consult
Consult data monitor
Turn ignition switch ON.
Select hazard sw of bcm (flasher) data monitor item.
While operating the hazar ...
Other materials:
Front disc brake
BRAKE PAD
BRAKE PAD : Inspection
PAD WEAR
Check brake pad thickness from an inspection hole on caliper body.
Check using a scale if necessary
Wear limit thickness : Refer to BR-55, "Front Disc
Brake".
DISC ROTOR
DISC ROTOR : Inspection
APPEARANCE
Check surface of disc rotor ...
Basic inspection
Diagnosis and repair workflow
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 occurred).
>> GO TO 2
2.CONFIRM THE SYMPTOM
Try to ...
P1551, P1552 Battery current sensor
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1551
BAT CURRENT SENSOR
(Battery current sensor)
An excessively low voltage from the sensor
is sent to ECM.
Harness or ...
