2012 Scion xB Standard TransFACTORY OEM SERVICE PROCEDURE

Integration Relay: Inspection: Inspection

  1. INSPECT INTEGRATION NO. 2 RELAY 
    Fig 1: Identifying Integration Relay Connector Terminals
    GTY164657Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Inspect the EFI (15A) fuse.
      1. Disconnect the fuse.
      2. Using an ohmmeter, measure the resistance of the fuse.

        Standard resistance

        Tester Connection Connection Specified Condition
        T2 - T6 Always Blow 1 Ω
    2. Inspect the EFI relay.
      1. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance

        Tester Connection Connection Specified Condition
        B1 - C1 When battery voltage absent Blow 1 Ω
        B1 - B4 When battery voltage absent 10 kΩ or higher
        B4 - C1 When battery voltage absent 10 kΩ or higher
        B1 - B4 When battery voltage applied to terminals B6 and B7 Blow 1 Ω
        B4 - C1 When battery voltage applied to terminals B6 and B7 Blow 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.

    3. Inspect the IG2 relay.
      Fig 2: Identifying IG2 Relay Connector Terminals
      GTY163091Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance

        Tester Connection Connection Specified Condition
        A1 - A4 When battery voltage absent 10 kΩ or higher
        A1 - A4 When battery voltage applied to terminal B2 and B3 Blow 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.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.