Rear Combination Light Assembly On-Vehicle Inspection

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Lighting. Lexus Gs430, Gs300. Uzs190 Grs190

  1. CHECK REAR COMBINATION LIGHT ASSEMBLY LH

  2. CHECK REAR COMBINATION LIGHT ASSEMBLY RH

  3. CHECK REAR LIGHT ASSEMBLY LH

  4. CHECK REAR LIGHT ASSEMBLY RH

Rear Combination Light Assembly -- On-Vehicle Inspection



1. CHECK REAR COMBINATION LIGHT ASSEMBLY LH


Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System.Rear Combination Light Assembly  On-Vehicle Inspection
  1. Disconnect the Z1 connector.

  1. Connect the voltmeter's positive (+) lead to terminal Z1-7 and the negative (-) lead to terminal Z1-6.

  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    Z1-7 (STP) - Z1-6 (E)
    Brake pedal released
    Below 1 V
    Z1-7 (STP) - Z1-6 (E)
    Brake pedal depressed
    10 to 14 V
  1. Connect the voltmeter's positive (+) lead to terminal Z1-5 and the negative (-) lead to terminal Z1-6.

  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    Z1-5 (TL) - Z1-6 (E)
    Dimmer switch OFF
    Below 1 V
    Z1-5 (TL) - Z1-6 (E)
    Dimmer switch ON
    10 to 14 V
    If the result is not as specified, replace the light assembly.


2. CHECK REAR COMBINATION LIGHT ASSEMBLY RH


Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System.Rear Combination Light Assembly  On-Vehicle Inspection
  1. Disconnect the Z3 connector.

  1. Connect the voltmeter's positive (+) lead to terminal Z3-2 and the negative (-) lead to terminal Z3-6.

  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    Z3-2 (STP) - Z3-6 (E)
    Brake pedal released
    Below 1 V
    Z3-2 (STP) - Z3-6 (E)
    Brake pedal depressed
    10 to 14 V
  1. Connect the voltmeter's positive (+) lead to terminal Z3-5 and the negative (-) lead to terminal Z3-6.

  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    Z3-5 (TL) - Z3-6 (E)
    Dimmer switch OFF
    Below 1 V
    Z3-5 (TL) - Z3-6 (E)
    Dimmer switch ON
    10 to 14 V
    If the result is not as specified, replace the light assembly.


3. CHECK REAR LIGHT ASSEMBLY LH


Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System.Rear Combination Light Assembly  On-Vehicle Inspection
  1. Disconnect the a2 connector.

  1. Connect the voltmeter's positive (+) lead to terminal a2-2 and the negative (-) lead to terminal a2-4.

  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    a2-2 (B) - a2-4 (E)
    Dimmer switch ON
    10 to 14 V
    a2-2 (B) - a2-4 (E)
    Dimmer switch OFF
    Below 1 V
    If the result is not as specified, replace the light assembly.


4. CHECK REAR LIGHT ASSEMBLY RH


Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System.Rear Combination Light Assembly  On-Vehicle Inspection
  1. Disconnect the a9 connector.

  1. Connect the voltmeter's positive (+) lead to terminal a9-2 and the negative (-) lead to terminal a9-4.

  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    a9-2 (B) - a9-4 (E)
    Dimmer switch ON
    10 to 14 V
    a9-2 (B) - a9-4 (E)
    Dimmer switch OFF
    Below 1 V
    If the result is not as specified, replace the light assembly.