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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 900 (SEAT HEATER SYSTEM)INSPECTION
2004 Toyota Matrix XR, FWD, Standard

Section 900 (Seat Heater System): Inspection

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT SEAT HEATER SWITCH CONTINUITY 
    SPECIFIED CONDITION

    Condition tester connection Specified condition
    OFF - No continuity
    ON (Left) 12 - 14 Continuity
    ON (Right) 14 - 16 Continuity

    If continuity is not as specified replace the switch or bulb.

    Fig 1: Inspecting Seat Heater Switch Continuity
    G03377089Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT REAR SEAT HEATER SWITCH VOLTAGE 

    (): Right side 

    1. Connect the positive (+) lead from the battery to terminal 2 and negative (-) lead terminal 8.
    2. Push the switch and check the voltage between terminal 5 (7) and battery H terminal.

      If operation is not as specified, replace the switch.

      Fig 2: Checking Voltage Between Terminal 5 (7) And Battery H Terminal
      G03377090Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT SEAT HEATER SWITCH CIRCUIT 

    Disconnect the switch connector and inspect the connector on the wire harness side, as shown.

    Fig 3: Disconnecting Switch Connector And Inspect Connector On Wire Harness Side
    G03377091Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SPECIFIED CONDITION

    Tester connection to terminal number Condition Specified condition
    6 - Ground Constant Continuity
    14 - Ground Ignition switch turned to ON Battery positive voltage
  4. Seat Cushion: INSPECT SEAT HEATER CONTINUITY 
    1. Heat the thermostat with a light.
    2. Inspect the seat heater continuity between terminals.
      Fig 4: Inspecting Seat Heater Continuity Between Terminals
      G03377092Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SPECIFIED CONDITION

      Tester connection Condition Specified condition
      A2 - B3 Constant Continuity
      A1 - B1 Seat heater temperature bellow 25°C (77°F) Continuity
      B1 - B2 Seat heater temperature bellow 25°C (77°F) Continuity
      A1 - B2 Seat heater temperature bellow 25°C (77°F) Continuity
      A1 - B1 Seat heater temperature above 55°C (131°F) No continuity
      B1 - B2 Seat heater temperature above 45°C (113°F) No continuity
      A1 - B2 Seat heater temperature above 45°C (113°F) No continuity

      If continuity is not as specified, replace the seat cushion pad.

  5. Seat Back: INSPECT SEAT HEATER CONTINUITY 

    Inspect the seat heater continuity between terminals, as shown.

    Fig 5: Inspecting Seat Heater Continuity Between Terminals
    G03377093Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SPECIFIED CONDITION

    Tester connection Condition Specified condition
    1 - 3 Constant Continuity
    2 - 3 Constant Continuity

    If continuity is not as specified, replace the seat back pad.

RENDER: 1.0x

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