ECM Terminal Identification

1995 Honda Passport EX, AutomaticSECTION ECM Terminal Identification

The following conditions must be present before testing pin voltages:

  • Engine at normal operating temperature.
  • Engine idling in closed loop (ENGINE RUN column).
  • ALDL test terminal not grounded.
  • All B+ voltages indicate charging or battery voltage.
  • All "0" voltages are ground circuits (should read less than 0.50 volt).
  1. Reads B+ for 2 seconds after ignition is turned on, then zero volts.
  2. B+ in gear and clutch pedal not depressed.
  3. B+ or zero volts depending on position of drive wheels.
  4. B+ for 2 seconds.
  5. Zero volts with steering wheel fully turned.
  6. A/T vehicles only.

Fig 1: ECM Terminal Identification (3.2L Passport)
G93A79251Courtesy of ISUZU MOTOR CO.
RENDER: 1.0x

NO RELATED

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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.