Nissan Sentra manuals

Nissan Sentra Service Manual: Power supply and ground circuit

Body control system

Body control system : diagnosis procedure

Regarding wiring diagram information, refer to bcs-51, "wiring diagram".

1.Check fuses and fusible link

Check that the following fuses and fusible link are not blown.

Is the fuse blown?


Is the fuse blown? Yes >> replace the blown fuse or fusible link after repairing the affected circuit.

No >> go to 2.

2.Check power supply circuit

  1. Disconnect BCM connector M85.
  2. Check voltage between bcm connector m85 and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> go to 3.

No >> repair harness or connector.

3.Check ground circuit

Check continuity between BCM connector M85 and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> inspection end.

No >> repair harness or connector.

Moonroof motor assembly

Moonroof motor assembly : description

Moonroof motor assembly : component function check

1. Check moonroof motor function

Check whether tilt up/down & slide open/close functions operate with moonroof switch normally? Is the inspection result normal? YES >> Moonroof motor assembly is OK.

NO >> Refer to RF-20, "MOONROOF MOTOR ASSEMBLY : Diagnosis Procedure".

Moonroof motor assembly : diagnosis procedure

Regarding wiring diagram information, refer to rf-13, "wiring diagram".

Moonroof motor assembly

1. Check power supply circuit

  1. Turn ignition switch off.
  2. Disconnect moonroof motor assembly connector.
  3. Turn ignition switch on.
  4. Check voltage between moonroof motor assembly connector r26 and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 2.

NO >> GO TO 3.

2. Check ground circuit

  1. Turn ignition switch off.
  2. Check continuity between moonroof motor assembly connector R26 and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 5.

NO >> Repair or replace the harness or connectors.

3. Check moonroof motor circuit

  1. Turn ignition switch off.
  2. Disconnect bcm.
  3. Check continuity between bcm connector m85 and moonroof motor assembly connector r26.


  1. Check continuity between BCM connector M85 and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> go to 4.

NO >> Repair or replace the harness or connectors.

4. Check bcm power supply

  1. Connect bcm.
  2. Check voltage between BCM connector M85 and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> check condition of harness and connectors.

No >> replace bcm. Refer to bcs-73, "removal and installation".

5. Check moonroof switch input signal

  1. Connect moonroof motor assembly.
  2. Turn ignition switch on.
  3. Check voltage between moonroof motor assembly connector R26 and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> go to 8.

No >> go to 6.

6. Check moonroof switch circuit

  1. Turn ignition switch off.
  2. Disconnect moonroof motor assembly and moonroof switch.
  3. Check continuity between moonroof motor assembly connector r26 and moonroof switch connector r27.


  1. Check continuity between moonroof motor assembly connector r26 and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 7.

NO >> Repair or replace the harness and connectors.

7. Check moonroof switch ground circuit

  1. Connect moonroof motor assembly.
  2. Check continuity between moonroof switch connector r27 and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> refer to rf-22, "moonroof motor assembly : component inspection".

No >> repair or replace the harness or connectors.

8. Check combination meter signal

  1. Check signal between moonroof motor assembly connector R26 and ground with oscilloscope.

Is the inspection result normal?


Is the inspection result normal? Yes >> replace moonroof motor assembly. Refer to rf-41, "removal and installation". After that, refer to rf-18, "additional service when replacing control unit : special repair requirement".

No >> go to 9.

9.Check combination meter circuit

  1. Turn ignition switch OFF.
  2. Disconnect combination meter.
  3. Check continuity between combination meter connector m24 and moonroof motor assembly connector r26.


  1. Check continuity between combination meter connector M24 and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> replace combination meter. Refer to mwi-77, "removal and installation".

No >> repair or replace the harness or connectors.

Moonroof motor assembly : component inspection

Moonroof switch

1. Check moonroof switch

  1. Turn ignition switch off.
  2. Disconnect moonroof switch.
  3. Check continuity between moonroof switch terminals.


Is the inspection result normal?


Is the inspection result normal? Yes >> moonroof switch is ok.

No >> replace moonroof switch (map lamp assembly). Refer to rf-50, "removal and installation".

Moonroof motor assembly : special repair requirement

1. Perform initialization procedure

Perform initialization procedure.

Refer to rf-18, "additional service when replacing control unit : special repair requirement".

>> Go to 2.

2. Check anti-pinch operation

Check anti-pinch operation.

Refer to rf-18, "additional service when replacing control unit : special repair requirement".

Is the inspection result normal? Yes >> inspection end.

No >> check fitting adjustment. Refer to rf-40, "adjustment".

Dtc/circuit diagnosis
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Moonroof switch
Description Transmits switch operation signal to moonroof motor assembly. Diagnosis Procedure Regarding Wiring Diagram information, refer to RF-13, "Wiring Diagram". 1.Check moonroof sw ...

Other materials:

Component parts
Component parts location Combination meter Combination switch (lighting and turn signal switch) Key switch (without intelligent key system) Push-button ignition switch (with intelligent key system) Seat belt buckle switch lh Front door switch lh Bcm (view with instrument pane ...

P0705 Transmission range sensor A
DTC Logic DTC DETECTION LOGIC DTC CONSULT screen terms [Trouble diagnosis content] DTC detection condition Possible causes P0705 T/M RANGE SENSOR A [Transmission Range Sensor A Circuit (PRNDL Input)] Two or more range signals simultaneously stay ON conti ...

Basic inspection
Diagnosis and repair work flow Work flow Overall sequence Detailed flow 1.Get information for symptom Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred) using the “diagnostic work sheet”. ( ...

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