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STOP LIGHT CONTROL RELAY INSPECTION

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    INSPECT STOP LIGHT CONTROL ECU ASSEMBLY


    1. A01DR7SE05

      Disconnect the A52 stop light control ECU assembly connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A52-5 (STP) - Body ground Brake pedal released Below 1 V
      Brake pedal depressed 11 to 14 V
      A52-6 (+B) - Body ground Always 11 to 14 V

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

      Table 1. Text in Illustration
      *a

      Front view of wire harness connector

      (to Stop Light Control ECU Assembly)

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A52-8 (GND) - Body ground Always Below 1 Ω

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

    4. A01DR0YE05

      Reconnect the A52 stop light control ECU assembly connector.

    5. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A52-1 (OUT) - Body ground Brake pedal released Below 1 V
      Brake pedal depressed 11 to 14 V

      If the result is not as specified, the stop light control ECU assembly may have a malfunction.

      Table 2. Text in Illustration
      *a

      Component with harness connected

      (to Stop Light Control ECU Assembly)