SEAT HEATER SWITCH INSPECTION

PROCEDURE

  1. INSPECT SEAT HEATER SWITCH

    1. B220401E03

      Measure the resistance according to the value(s) in the table below.

      Table 1. Text in Illustration

      *1

      Component without harness connected

      (Seat Heater Switch)

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      4 (IG) - 3 (LH)

      L switch pressed

      Below 1 Ω

      5 (IG) - 6 (RH)

      R switch pressed

      If the result is not as specified, replace the seat heater switch.

    2. B220402E03

      Apply battery voltage to the switch connector and check that the seat heater switch illuminates.

      Table 2. Text in Illustration

      *1

      On Illumination

      *2

      Component without harness connected

      (Seat Heater Switch)

      OK

      Measurement Condition

      Switch Condition

      Specified Condition

      Battery positive (+) → 4 (IG)

      Battery negative (-) → 2 (E)

      L switch pressed

      On illumination illuminates

      Battery positive (+) → 5 (IG)

      Battery negative (-) → 2 (E)

      R switch pressed

      If the result is not as specified, replace the seat heater switch.

    3. B220403E03

      Apply battery voltage to the switch connector and check that the seat heater switch illuminates.

      Table 3. Text in Illustration

      *1

      Mark Illumination

      *2

      Component without harness connected

      (Seat Heater Switch)

      OK

      Measurement Condition

      Specified Condition

      Battery positive (+) → 7 (ILL+)

      Battery negative (-) → 8 (ILL-)

      Mark illumination illuminates

      If the result is not as specified, replace the seat heater switch.