SEAT HEATER SYSTEM ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT SEAT HEATER CONTROL SUB-ASSEMBLY (for Front Side)

    A01X2RQE02

    1. Disconnect the c13 and c1 heater control connectors.

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

      Standard Resistance
      for LH Side
      Tester Connection Specified Condition
      c13-6 (E) - Body ground Below 1 Ω
      for RH Side
      Tester Connection Specified Condition
      c1-6 (E) - Body ground Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

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

      Standard Voltage
      for LH Side
      Tester Connection Switch Condition Specified Condition
      c13-1 (SWL) - c13-6 (E) Engine switch on (IG), seat heater switch off Below 1 V
      Engine switch on (IG), seat heater switch on 11 to 14 V
      c13-4 (B) - c13-6 (E) Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      for RH Side
      Tester Connection Switch Condition Specified Condition
      c1-1 (SWR) - c1-6 (E) Engine switch on (IG), seat heater switch off Below 1 V
      Engine switch on (IG), seat heater switch on 11 to 14 V
      c1-4 (B1) - c1-6 (E) Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V

      If the result is not as specified, there may be a malfunction on the wire harness side.

    4. Connect the c13 and c1 heater control connectors.

    5. A01WZCHE02

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

      Standard Voltage
      for LH Side
      Tester Connection Switch Condition Specified Condition
      c13-5 (THL) - Body ground Engine switch on (IG), seat heater switch on, volume Min→ Max Gradual increase from below 1 V to 11 to 14 V
      for RH Side
      Tester Connection Switch Condition Specified Condition
      c1-5 (THR) - Body ground Engine switch on (IG), seat heater switch on, volume Min → Max Gradual increase from below 1 V to 11 to 14 V

      If the result is not as specified, the seat heater control may have a malfunction.