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Section 326 (Interior Light System): Inspection

WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT FRONT PERSONAL LIGHT SWITCH CONTINUITY 
    SPECIFIED CONDITION

    Switch position Tester connection Specified condition
    OFF - No continuity
    ON 1-2 Continuity

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

    Fig 1: Locating Light Assembly
    G03375438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT FRONT PERSONAL LIGHT SWITCH CIRCUIT 

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

    Fig 2: Inspecting Connector Wire Harness Side
    G03375439Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SPECIFIED CONDITION

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

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

  3. INSPECT REAR PERSONAL LIGHT SWITCH CONTINUITY 
    SPECIFICATION CONDITION

    Switch position Tester connection Specified condition
    OFF - No continuity
    ON 1 - 4 Continuity

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

    Fig 3: Identifying Connector Terminal (1 Of 4)
    G03375440Courtesy 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.

    Fig 4: Identifying Connector Terminal (2 Of 4)
    G03375441Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SPECIFICATION CONDITION

    Tester connection Condition Specified condition
    1 -Ground Always Continuity
    4 - Ground Always Battery positive voltage

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

  5. INSPECT ROOM LIGHT SWITCH CONTINUITY 
    SPECIFICATION CONDITION

    Switch position Tester connection Specified condition
    Room Light Switch OFF - No continuity
    Room Light Switch DOOR 3-4 Continuity
    Room Light Switch ON 1 - 4 Continuity

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

    Fig 5: Identifying Connector Terminal (3 Of 4)
    G03375442Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT ROOM LIGHT SWITCH CIRCUIT 

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

    Fig 6: Identifying Connector Terminal (4 Of 4)
    G03375443Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SPECIFICATION CONDITION

    Tester connection Condition Specified condition
    1-Ground Always Continuity
    4-Ground Always Battery positive voltage

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

  7. INSPECT REAR ROOM LIGHT SWITCH CONTINUITY 
    1. Disconnect the connector from the room light assembly.
    2. Turn the room light switch ON, and check that continuity exists between terminal 2 and body ground.
      Fig 7: Checking Continuity Exists Between Terminal Ground
      G03375444Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the room light switch DOOR, and check that continuity exists between terminal 1 and 2.

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

    Fig 8: Checking Continuity Exists Between Terminal 1 & 2
    G03375445Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSPECT REAR ROOM LIGHT SWITCH CIRCUIT 

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

    Fig 9: Inspecting Connector Wire Harness Side
    G03375446Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SPECIFICATION CONDITION

    Tester connection Condition Specified condition
    1 - Ground Always Battery positive voltage

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

  9. INSPECT VANITY LIGHT CONTINUITY 
    SWITCH POSITION

    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 the bulb.

    Fig 10: Identifying On/Off Switch
    G03375447Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. INSPECT VANITY LIGHT CIRCUIT 

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

    Fig 11: Identifying Connector Wire Harness Side
    G03375448Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SPECIFICATION CONDITION

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

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

  11. INSPECT DOOR COURTESY SWITCH CONTINUITY 
    1. Check that continuity exists between terminal and the switch body with the switch ON (switch pin released).
    2. Check that no continuity exists between terminals and the switch body with the switch OFF (switch pin pushed).

    If continuity is not as specified, replace the switch.

    Fig 12: Checking Continuity Exists Between Terminal & Switch
    G03375449Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. INSPECT DOOR COURTESY SWITCH CIRCUIT 

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

    Fig 13: Identifying Connector Wire Harness Side
    G03375450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SPECIFICATION CONDITION

    Tester connection Condition Specified condition
    1 - Ground Always Battery positive voltage

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

  13. 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 the bulb.

    Fig 14: Checking Continuity Exists Between Terminals
    G03375451Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. INSPECT DOOR COURTESY LIGHT CIRCUIT (See  PROBLEM SYMPTOMS TABLE  ) 
    Fig 15: Identifying Connector Wire Harness Side
    G03375452Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. INSPECT BACK DOOR COURTESY SWITCH CONTINUITY 
    SPECIFICATION CONDITION

    Switch position Tester connection Specified condition
    OFF (closed) - No continuity
    ON (opened) 1 - 2 Continuity
    Fig 16: Identifying Back Door Courtesy Switch
    G03375453Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If continuity is not as specified, replace the back door lock assembly.

  16. INSPECT BACK DOOR COURTESY SWITCH CIRCUIT 

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

    Fig 17: Identifying Connector Wire Harness Side
    G03375454Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SPECIFICATION CONDITION

    Tester connection Condition Specified condition
    2 - Ground Always Continuity

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

  17. INSPECT GLOVE COMPARTMENT DOOR COURTESY SWITCH CONTINUITY 
    SPECIFICATION CONDITION

    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 18: Identifying Switch
    G03375455Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. 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 the bulb.

    Fig 19: Checking Continuity Exists Between Terminals
    G03375456Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. INSPECT FOOT LIGHT CIRCUIT 

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

    SPECIFICATION CONDITION

    Condition Tester connection Specified condition
    Ignition switch ON and door open 1 - Ground Battery positive voltage
    Always 2 - Ground Continuity

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

    Fig 20: Inspecting Connector Wire Harness Side
    G03375457Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. INSPECT INSIDE DOOR HANDLE ILLUMINATION CIRCUIT 

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

    SPECIFICATION CONDITION

    Condition Tester connection Specified condition
    Ignition switch ON and door open 1 - Ground Battery positive voltage
    Always 2 - Ground Continuity

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

    Fig 21: Inspecting Connector Wire Harness Side
    G03375458Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. INSPECT SIDE STEP LIGHT CIRCUIT 

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

    SPECIFICATION CONDITION

    Condition Tester connection Specified condition
    Ignition switch ON and door open 1 - Ground Battery positive voltage
    Always 2 - Ground Continuity

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

    Fig 22: Inspecting Connector Wire Harness Side
    G03375459Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. INSPECT OUTER FOOT LIGHT CIRCUIT 

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

    SPECIFICATION CONDITION

    Condition Tester connection Specified condition
    Ignition switch ON and door open 1 - Ground Battery positive voltage
    Always 2 - Ground Continuity

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

    Fig 23: Identifying Wire Harness Side
    G03375460Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. INSPECT CENTER CONSOLE SPOT LIGHT CIRCUIT 

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

    SPECIFICATION CONDITION

    Condition Tester connection Specified condition
    Ignition switch ON and door open 1 - Ground Battery positive voltage
    Always 2 - Ground Continuity

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

    Fig 24: Identifying Wire Harness Side
    G03375461Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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