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Circuit Opening Relay: Inspection

  1. INSPECT CIRCUIT OPENING RELAY 
    1. Using an ohmmeter, measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      3 - 5 Below 1 Ω (Apply battery voltage between terminals 1 and 2)

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

    Fig 1: Identifying A/F Sensor Heater Relay
    G04942983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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