2005 Scion xA StandardFACTORY OEM SERVICE PROCEDURE

Waveform 9

  1. Igniter IGT signal (from ECM to igniter)
  2. Igniter IGF signal (from igniter to ECM)
    TERMINAL SPECIFICATIONS

    ECM Terminal Name
    1. Between IGT (1 to 4) and E1
    2. Between IGF and E1
    Tester Ranges 2 V/DIV, 20 msec./DIV
    Conditions Idling

    HINT:

    The wavelength becomes shorter as the engine rpm increases.

    Fig 1: Identifying Waveform 9
    G03196089Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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.