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Section 366 (Interior Light System): Inspection

WARNING: This page is about a different car, the 2004 Lexus GS 430 and 2004 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT FRONT PERSONAL LIGHT SWITCH CONTINUITY 
    TESTER CONNECTION SPECIFICATION

    Switch position Tester connection Specified condition
    Interior light switch OFF (Lever switch) - No continuity
    Interior light switch DOOR (Lever switch) 1 - 3 Continuity
    Interior light switch ON (Lever switch) 1 - 2 Continuity
    (1)Personal light OFF (Push switch) - No continuity
    (1)Personal light ON (Push switch) 1 - 2 Continuity
    (1) Set the interior light switch to OFF or DOOR.

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

    Fig 1: Inspecting Front Personal Light Switch Continuity
    G03471063Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT FRONT PERSONAL LIGHT SWITCH CIRCUIT 

    (See  ILLUMINATION 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
    G03471064Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFICATION

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

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

  3. INSPECT REAR PERSONAL LIGHT SWITCH CONTINUITY 
    TESTER CONNECTION SPECIFICATION

    Switch position Tester connection Specified condition
    Room light switch OFF and door closed - No continuity
    Room light switch ON and door closed 1 - 2 Continuity
    Room light switch OFF or ON and door opened 1 - 3 Continuity

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

    Fig 3: Inspecting Rear Personal Light Switch Continuity
    G03471065Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT REAR PERSONAL LIGHT SWITCH CIRCUIT 

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

    Fig 4: Inspecting Connector On Wire Harness Side
    G03471066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFICATION

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

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

  5. INSPECT VANITY LIGHT CONTINUITY 
    TESTER CONNECTION SPECIFICATION

    Switch position Tester connection Specified condition
    OFF (closed) - No continuity
    ON (opened) 1 - 2 Continuity

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

    Fig 5: Inspecting Vanity Light Continuity
    G03471067Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT VANITY LIGHT CIRCUIT 

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

    Fig 6: Inspecting Vanity Light Circuit Connector
    G03471068Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFICATION

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

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

  7. Front door: 

    INSPECT DOOR COURTESY SWITCH CONTINUITY 

    1. Connect the connector to the front door ECU.
    2. Check that continuity exists between terminals 1 and 2 when door is opened.
    3. Check that no continuity exists between terminals 1 and 2 when door is closed.

    If continuity is not as specified, replace the switch.

  8. Front door: 

    INSPECT DOOR COURTESY SWITCH CIRCUIT 

    Driver side: (See  DOOR LOCK MOTOR CIRCUIT  ) 

    Passenger side: (See  DOOR UNLOCK DETECTION SWITCH  ) 

    Fig 7: Inspecting Door Courtesy Switch Continuity (Front Door)
    G03471069Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. Rear door: 

    INSPECT DOOR COURTESY SWITCH CONTINUITY 

    1. Connect the connector to the rear door ECU.
    2. Check that continuity exists between terminals 1 and 2 when door is opened.
    3. Check that no continuity exists between terminals 1 and 2 when door is closed.

    If continuity is not as specified, replace the switch.

  10. Rear door: 

    INSPECT DOOR COURTESY SWITCH CIRCUIT 

    Rear LH side: (See  DOOR LOCK MOTOR CIRCUIT  ) 

    Rear RH side: (See  DOOR LOCK MOTOR CIRCUIT  ) 

    Fig 8: Inspecting Door Courtesy Switch Continuity (Rear Door)
    G03471070Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. INSPECT DOOR COURTESY LIGHT CONTINUITY 

    Using an ohmmeter, check that continuity exists between terminals.

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

    Fig 9: Checking Continuity Exists Between Terminals
    G03471071Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. INSPECT DOOR COURTESY LIGHT CIRCUIT 

    Driver side: (See  DOOR COURTESY LIGHT AND COURTESY SWITCH CIRCUIT  ) 

    Passenger side: (See  DOOR COURTESY LIGHT AND COURTESY SWITCH CIRCUIT  ) 

    Rear LH side: (See  DOOR COURTESY LIGHT AND COURTESY SWITCH CIRCUIT  ) 

    Rear RH side: (See  DOOR COURTESY LIGHT AND COURTESY SWITCH CIRCUIT  ) 

    Fig 10: Inspecting Door Courtesy Light Circuit
    G03471072Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. INSPECT LUGGAGE COMPARTMENT DOOR COURTESY SWITCH CONTINUITY 
    TESTER CONNECTION SPECIFICATION

    Switch position Tester connection Specified condition
    OFF (closed) - No continuity
    ON (opened) 2 - Switch body Continuity

    If continuity is not as specified, replace the switch.

    Fig 11: Inspecting Luggage Compartment Door Courtesy Switch Continuity
    G03471073Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. INSPECT LUGGAGE COMPARTMENT DOOR COURTESY SWITCH CIRCUIT 

    (See  LUGGAGE COURTESY SWITCH CIRCUIT  ) 

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

    Fig 12: Inspecting Connector On Wire Harness Side
    G03471074Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFICATION

    Tester connection Condition Specified condition
    2 - Body ground Luggage compartment door courtesy switch ON (door opened) Continuity

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

  15. INSPECT LUGGAGE COMPARTMENT LIGHT CONTINUITY 

    Using an ohmmeter, check that continuity exists between terminals.

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

    Fig 13: Checking Continuity Exists Between Terminals
    G03471075Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. INSPECT LUGGAGE COMPARTMENT LIGHT CIRCUIT 

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

    Fig 14: Inspecting Connector On Wire Harness Side
    G03471076Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFICATION

    Tester connection Condition Specified condition
    1 - Body ground Constant Continuity

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

  17. INSPECT GLOVE COMPARTMENT DOOR COURTESY SWITCH CONTINUITY 
    TESTER CONNECTION SPECIFICATION

    Switch position Tester connection Specified condition
    OFF (closed) - No continuity
    ON (opened) 1 - 2 Continuity

    If continuity is not as specified, replace the switch.

    Fig 15: Inspecting Glove Compartment Door Courtesy Switch Continuity
    G03471077Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. INSPECT GLOVE COMPARTMENT DOOR COURTESY SWITCH CIRCUIT 

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

    Fig 16: Inspecting Connector On Wire Harness Side
    G03471078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFICATION

    Tester connection Condition Specified condition
    2 - Ground Constant Continuity
    1 - Ground Light control switch OFF No voltage
    1 - Ground Light control switch TAIL or HEAD Battery positive voltage

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

  19. INSPECT GLOVE COMPARTMENT LIGHT CONTINUITY 

    Using an ohmmeter, check that continuity exists between terminals.

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

    Fig 17: Checking Continuity Exists Between Terminals
    G03471079Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. INSPECT GLOVE COMPARTMENT LIGHT CIRCUIT 

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

    Fig 18: Inspecting Connector On Wire Harness Side
    G03471080Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFICATION

    Tester connection Condition Specified condition
    2 - Ground Glove compartment door courtesy switch ON Continuity
    1 - Ground Light control switch in TAIL or HEAD Battery positive voltage

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

  21. INSPECT LICENCE PLATE LIGHT CONTINUITY 

    Using an ohmmeter, check that continuity exists between terminals.

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

    Fig 19: Inspecting Licence Plate Light Continuity
    G03471081Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. INSPECT LICENCE PLATE LIGHT CIRCUIT 

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

    Fig 20: Inspecting Connector On Wire Harness Side
    G03471082Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFICATION

    Tester connection Condition Specified condition
    1 - Ground Constant Continuity
    2 - Ground Light control switch TAIL or HEAD Battery positive voltage

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

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