Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Metro & Firefly (Canadian)
Power for Powertrain Control Module (PCM) is supplied from FI fuse (15-amp) through main relay. PCM memory power is supplied from DOME fuse (15-amp). FI, IG-COIL and DOME fuses are located in relay/fuse box. PCM distributes power and controls ground of various sensors, switches and solenoids for engine control. See Figure-Figure .
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.