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Integration Relay: Inspection: Inspection

  1. INSPECT INTEGRATION RELAY 
    NOTE:
    • Some relays are built into the integration relay (unit: A). The integration relay cannot be disassembled. If there is a malfunction in the circuit of the integration relay, replace the integration relay.
    • The internal circuit of the integration relay is as shown in the illustration. Inspect the integration relay using the following procedures.
      Fig 1: Integration Relay Inner Diagram
      GTY143853Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance of the C/OPN relay.
      Fig 2: Identifying Integration Relay Backside
      GTY145406Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an ohmmeter, measure the resistance between terminal.

        Standard resistance

        Tester Connection Specified Condition
        2B-5 - 2B-8 10 kΩ or higher
      2. Connect the battery's positive (+) lead to terminals 2B-5 and negative (-) lead to terminal 2B-7. Using an voltmeter, measure the resistance between terminal.

        Standard voltage

        Tester Connection Specified Condition
        2B-7 - 2B-8 10 - 14V
    2. Measure the resistance of the EFI MAIN relay.
      Fig 3: Identifying EFI Fuse
      GTY140593Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the EFI fuse. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance

        Tester Connection Specified Condition
        EFI fuse terminal 2 - 2A-8 10 kΩ or higher
      2. Connect the battery's positive (+) lead to terminal 2A-6 and negative (-) lead to terminal 2A-7. Using an ohmmeter, measure the resistance between terminal.

        Standard resistance

        Tester Connection Specified Condition
        EFI fuse terminal 2 - terminal 2A-8 Below 1 Ω
    3. Measure the resistance of the EFI NO. 2 relay.
      Fig 4: Identifying EFI No. 2 Relay & Terminals
      GTY359255Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the F/PMP fuse. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance

        Tester Connection Specified Condition
        F-PMP fuse terminal 2 - 2B-4 10 kΩ or higher
      2. Connect the battery's positive (+) lead to terminal 2A-8 and negative (-) lead to terminal 2B-3. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance

        Tester Connection Specified Condition
        F-PMP fuse terminal 2 - 2B-4 Below 1 Ω
    4. Measure the resistance of the EFI INJ relay.
      Fig 5: Identifying INJ Fuse & Terminals
      GTY137586Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the INJ fuse. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance

        Tester Connection Specified Condition
        INJ fuse terminal 2 - 2A-4 10 kΩ or higher
      2. Connect the battery's positive (+) lead to terminal 2A-2 and negative (-) lead to terminal 2A-3. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance

        Tester Connection Specified condition
        INJ fuse terminal 2 - terminal 2A-4 Below 1 Ω
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