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Integration Relay: Inspection

  1. INSPECT ENGINE ROOM JUNCTION BLOCK ASSEMBLY 
    1. Inspect the EFI No. 1 fuse.
      1. Remove the EFI No. 1 fuse.
      2. Using an ohmmeter, measure the resistance of the fuse.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION TABLE

      Tester Connection Condition Specified Condition
      EFI No. 1 fuse Always Below 1 Ω
    2. Inspect the A/F fuse.
      1. Remove the A/F fuse.
      2. Using an ohmmeter, measure the resistance of the fuse.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION TABLE

      Tester Connection Condition Specified Condition
      A/F fuse Always Below 1 Ω
      Fig 1: Identifying Engine Room Junction Block Assembly - Circuit Diagram
      G05414095Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Inspect EFI relay.
      1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION TABLE

      Tester Connection Condition Specified Condition
      2E-12 - 2E-7 No battery voltage applied 10 kΩ or higher
      2E-12 - 2E-7 Battery voltage applied to terminals 2E-10 and 2E-9 Below 1 Ω
      NOTE: While using the battery for the inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.
      Fig 2: Identifying EFI Relay
      G05415083Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Inspect the C/OPN relay.
      1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION TABLE

      Tester Connection Condition Specified Condition
      2E-13 - 2E-7 No battery voltage applied 10 kΩ or higher
      2E-13 - 2E-7 Battery voltage applied to terminals 2E-8 and 2D-12 Below 1 Ω
      NOTE: While using the battery for the inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.
      Fig 3: Identifying C/OPN Relay
      G05414097Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Inspect the A/F relay.
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance 

        TESTER CONNECTION SPECIFIED CONDITION TABLE

        Tester Connection Condition Specified Condition
        2A-4 - 2C-1 No battery voltage applied 10 kΩ or higher
        2A-4 - 2C-1 Battery voltage applied to terminals 2E-10 and 2E-7 Below 1 Ω
        NOTE: While using the battery for the inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.
        Fig 4: Identifying A/F Relay
        G05414098Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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