Section 1002 (Stop Lamp System): Inspection

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection
WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT STOP LIGHT SWITCH CONTINUITY 
    Fig 1: Inspecting Stop Light Switch Continuity
    G03494272Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    STOP LIGHT SWITCH TERMINALS CONTINUITY

    Switch position Tester connection Specified condition
    Switch pin pushed in (Pedal released) 1-2 Continuity
    Switch pin free (Pedal depressed) 1-2 No continuity
    Switch pin free (Pedal depressed) 3-4 Continuity
    Switch pin pushed in (Pedal released) 3-4 No continuity

    If continuity is not as specified, replace the switch.

  2. w/ Spoiler: 

    INSPECT HI-MOUNTED STOP LIGHT ASSEMBLY CONTINUITY 

    Using the ohmmeter, check that continuity exists between terminals.

    If continuity is not as specified, replace the bulb or light assembly.

    Fig 2: Inspecting Hi-Mounted Stop Light Assembly Continuity (W/Spoiler)
    G03494273Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT STOP LIGHT SWITCH CIRCUIT (See  CIRCUIT INSPECTION  ) 

    Disconnect the connector from the switch and inspect the connector on the wire harness side, as shown in Fig 3 .

    Fig 3: Inspecting Stop Light Switch Circuit
    G03494274Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    STOP LIGHT SWITCH CONNECTOR TERMINALS VOLTAGE

    Tester connection Condition Specified condition
    2 - Ground Always Battery Positive Voltage

    If circuit is not as specified, inspect the power source or wire harness.

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.