Section 570 (Headlight & Taillight System): Inspection

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection
WARNING: This page is about a different car, the 2003 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT LIGHT CONTROL SWITCH CONTINUITY 
    LIGHT CONTROL SWITCH CONTINUITY SPECIFICATIONS

    Switch Position Tester Connection Specified Condition
    OFF - No Continuity
    TAIL 14 - 16 Continuity
    HEAD 13 - 14 - 16 Continuity
    AUTO 12 - 16 Continuity

    If continuity is not as specified, replace the switch.

  2. INSPECT HEADLIGHT DIMMER SWITCH CONTINUITY 
    HEADLIGHT DIMMER SWITCH CONTINUITY SPECIFICATIONS

    Switch Position Tester Connection Specified Condition
    Flash 7 - 8 - 16 Continuity
    Low Beam 16 - 17 Continuity
    High Beam 7 - 16 Continuity

    If continuity is not as specified, replace the switch.

    Fig 1: Identifying Light Control Switch And Connector Terminal
    G02852090Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT HEADLIGHT CONTROL RELAY CONTINUITY 
    Fig 2: Headlight Control Relay Continuity Specifications
    G02852091Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If continuity is not as specified, replace the relay.

    Fig 3: Inspecting Headlight Control Relay Continuity
    G02852092Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT TAILLIGHT CONTROL RELAY CONTINUITY 
    Fig 4: Taillight Control Relay Continuity Specifications
    G02852093Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If continuity is not as specified, replace the relay.

    Fig 5: Inspecting Taillight Control Relay Continuity
    G02852094Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT DRL NO. 4 RELAY CIRCUIT 
    Fig 6: DRL No. 4 Relay Circuit Continuity Specifications
    G02852095Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If continuity is not as specified, replace the relay.

    Fig 7: Inspecting DRL No. 4 Relay Circuit
    G02852096Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT DIMMER RELAY CIRCUIT 
    DIMMER RELAY CIRCUIT CONTINUITY SPECIFICATIONS

    Condition Tester Connection Specified Condition
    Constant 1 - 2, 3 - 4 Continuity
    Apply B+ Between Terminals 1 And 2. 3 - 5 Continuity

    If continuity is not as specified, replace the relay.

    Fig 8: Inspecting Dimmer Relay Circuit
    G02852097Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. AUTO ON: INSPECT AUTOMATIC LIGHT CONTROL 
    1. Turn the ignition switch ON.
    2. Turn the light control switch to AUTO.
    3. Gradually cover the top of the sensor.
    4. Check that the accessory lights and the headlights should turn ON.
    5. Fig 9: Inspecting Automatic Light Control (Auto On)
      G02852098Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. AUTO OFF: INSPECT AUTOMATIC LIGHT CONTROL 
    1. Gradually expose the sensor.
    2. Check that the headlights and the accessory lights should turn OFF.
  9. INSPECT LIGHTS-OFF CONDITION 
    1. Turn the ignition switch ON.
    2. Lights auto ON: Gradually cover the top of the sensor.
    3. Check that the lights go off under the following conditions.
      1. (1) Light control switch is OFF.
      2. (2) The area surrounding the sensor gets bright.
      3. (3) After the ignition switch is turned OFF and after 30 sec. from when open doors are all closed.
        Fig 10: Inspecting Automatic Light Control (Auto Off)
        G02852099Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. INSPECT LIGHTS-ON CONDITION 
    1. Open the driver's door while the ignition switch is OFF.
    2. Turn the light control switch to AUTO leaving the door open and cover the top of the sensor. Make sure that the lights go on when the ignition switch is turned ON.
  11. ADJUST AUTOMATIC LIGHT CONTROL SENSOR 
    1. Adjustment of the light control is performed by turning the sensitivity knob on the sensor.
    2. This will be determined by light condition the automatic control will take place.
      • If response is too quick, turn the knob counterclockwise.
      • If response is too slow, turn the knob clockwise.
        Fig 11: Adjusting Automatic Light Control Sensor
        G02852100Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. Connector Connected: INSPECT AUTOMATIC LIGHT CONTROL SENSOR CIRCUIT 

    Connect the wire harness side connector to the sensor and inspect wire harness side connector from the back side, as shown in the table.

    NOTE:
    • Ignition switch ON.
    • Light control switch AUTO.
    • Vehicle's surroundings are bright.
      Fig 12: View Of Automatic Light Control Sensor Connector (From Back Side)
      G02852101Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.