Lexus IS250 · Service Manual BODY ELECTRICAL

INSPECTION

Inspection


INSPECT REAR ROOM LIGHT (PERSONAL LIGHT)

  1. E119967E01
    Disconnect the R8 connector from the rear room light.

  1. Measure the resistance of the connector.

    Standard resistance:
    Tester Connection
    Condition
    Specified Condition
    R8-3 (RGND) - Body ground
    Always
    Below 1 Ω

  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    R8-1 (RRMP) - Body ground
    Always
    10 to 14 V

    If the result is not as specified, repair or replace wire harness or connector.

  1. E119968E01
    Connect the (+) lead from the battery to terminal 1 and the (-) lead to terminal 3.

  1. Check that the personal light comes on.

    OK:
    Condition
    Specified Condition
    LH side personal light ON
    LH side personal light comes ON
    LH side personal light OFF
    LH side personal light does not come ON
    RH side personal light ON
    RH side personal light comes ON
    RH side personal light OFF
    RH side personal light does not come ON

    If the result is not as specified, replace the rear room light assembly.


INSPECT REAR ROOM LIGHT (DOME LIGHT)

  1. E119967E03
    Disconnect the R8 connector from the rear room light.

  1. Measure the voltage of the connector.

    Standard resistance:
    Tester Connection
    Condition
    Specified Condition
    R8-1 (RRMP) - Body ground
    Always
    10 to 14 V

    If the result is not as specified, repair or replace wire harness or connector.

  1. E119968E02
    Connect the (+) lead from the battery to terminal 2 and the (-) lead to terminal 4.

  1. Check that the rear interior light comes on.

    OK:
    Comes on

    If the result is not as specified, replace the rear room light assembly.

  1. Connect the (+) lead from the battery to terminal 2 and the (-) lead to terminal 5.

  1. Check that the rear seat light comes on.

    OK:
    Comes on

    If the result is not as specified, replace the rear room light assembly.

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