LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2004 >> GS 430 >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Stop Light System >> Inspection

Stop Light System: Inspection

  1. INSPECT STOP LIGHT SWITCH CONTINUITY 
    TESTER CONNECTION SPECIFICATION

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

    If continuity is not as specified, replace the switch.

    Fig 1: Inspecting Stop Light Switch Continuity
    G03471085Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT STOP LIGHT SWITCH CIRCUIT 

    (See  STOP LIGHT SWITCH CIRCUIT  ) 

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

    Fig 2: Inspecting Connector On Wire Harness Side
    G03471086Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFICATION

    Tester connection Condition Specified condition
    2 - Ground Constant Battery positive voltage

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

  3. INSPECT HI-MOUNTED STOP LIGHT CONTINUITY 

    Using an ohmmeter, check that continuity exists between terminals.

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

    Fig 3: Inspecting Hi-Mounted Stop Light Continuity
    G03471087Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT HI-MOUNTED STOP LIGHT CIRCUIT 

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

    Fig 4: Inspecting Connector On Wire Harness Side
    G03471088Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFICATION

    Tester connection Condition Specified condition
    2 - Ground Constant Continuity

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

  5. INSPECT LIGHT FAILURE SENSOR 

    (See  LAMP FAILURE SENSOR CIRCUIT  and  INSPECTION  )