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Home >> Toyota >> 2009 >> Tundra Base, 4.0 U >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> Stop Light Control Relay >> On-Vehicle Inspection

On-Vehicle Inspection

  1. CHECK STOP LIGHT CONTROL RELAY (BRK NO. 1, BRK NO. 2) 
    1. Remove the 2 stop light control relays from the engine room relay block.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION TABLE

      Tester Connection Condition Specified Condition
      3 - 4 When battery voltage is applied to terminals 1 and 2 10 kΩ or higher
      When battery voltage is not applied to terminals 1 and 2 Below 1 Ω
      3 - 5 When battery voltage is not applied to terminals 1 and 2 10 kΩ or higher
      When battery voltage is applied to terminals 1 and 2 Below 1 Ω
      Fig 1: Identifying Stop Light Control Relays
      G04975259Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the result is not as specified, replace the relay.

    3. Install the 2 stop light control relays.