Power Supply

1990 Isuzu Amigo S, 2.3 L, MSG5ESECTION Power Supply

ECM relay is activated by ignition switch and supplies battery power to ECM. Relay is powered by 10-amp fuse (No. 8) in interior fuse box. ECM relay should always have power at Black wire, powered by 60-amp main fuse. The main fuse is located on right side of engine compartment in fuse/relay box.

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When to See a Mechanic

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

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