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Ignition Coil

  1. Ensure ignition is off. Disconnect ignition coil wiring. Measure primary resistance between terminals "C" and "E". See Fig 1 . Measure secondary resistance between terminals "C" and "D". Measure insulation resistance between terminals "C" and body ground.
  2. Ensure resistance is within specification. Refer to the IGNITION COIL RESISTANCE (NON-HEI SYSTEMS)  . Replace coil if resistance is not within specification.
    Fig 1: Identifying Ignition Coil Terminals
    G95G31084Courtesy of ISUZU MOTOR CO.
    IGNITION COIL RESISTANCE (NON-HEI SYSTEMS)

    Application/ (1) Model Primary Ohms @ 68°F (20°C) Secondary Ohms @ 68°F (20°C)
    Rodeo/Passport 2.6L .81-.99 7500-11,300
    (1) Insulation resistance should not be more than 10 megohms.
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