Nissan Sentra manuals

Nissan Sentra Service Manual: Seat belt buckle switch signal circuit

Nissan Sentra Service Manual / Driver information & multimedia / Warning chime system / Dtc/circuit diagnosis / Seat belt buckle switch signal circuit

Description

Transmits a seat belt buckle switch lh (driver seat) signal to the combination meter

Component function check

1. Check combination meter input signal

Select data monitor for meter/m&a and check the buckle sw monitor value.

YES >> Inspection End.


YES >> Inspection End.

NO >> Refer to WCS-29, "Diagnosis Procedure".

Diagnosis procedure

Regarding wiring diagram information, refer to wcs-17, "wiring diagram".

1.Check combination meter input signal

  1. Turn ignition switch on.
  2. Check voltage between combination meter harness connector m24 terminal 9 and ground.

Is the inspection result normal?


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

No >> go to 2.

2.Check seat belt buckle switch circuit

  1. Turn ignition switch OFF.
  2. Disconnect combination meter harness connector m24 and seat belt buckle switch lh (driver seat) harness connector b16.
  3. Check continuity between combination meter harness connector m24 terminal 9 and seat belt buckle switch lh (driver seat) harness connector b16 terminal 1.


  1. Check continuity between combination meter harness connector m24 terminal 9 and ground.

Is the inspection result normal?


Is the inspection result normal?

Yes >> go to 3.

No >> repair or replace harness or connector.

3.Check seat belt buckle switch ground circuit

Check continuity between seat belt buckle switch lh (driver seat) harness connector b16 terminal 2 and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> check the seat belt buckle switch. Refer to wcs-30, "component inspection".

No >> repair or replace harness or connector.

Component inspection

1. Check seat belt buckle switch

  1. Turn ignition switch off.
  2. Disconnect the seat belt buckle switch lh (driver seat).
  3. Check continuity between the seat belt buckle switch lh (driver seat) terminals 1 and 2.

Is the inspection result normal?


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

No >> replace the seat belt buckle switch lh (driver seat). Refer to sr-32, "removal and installation".

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