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.
2004 Ford Focus L4-2.3L VIN ZFACTORY OEM SERVICE PROCEDURE
Test B: Powertrain Control Module PCM Power Relay
PINPOINT TEST B: POWERTRAIN CONTROL MODULE PCM POWER RELAY
B Introduction 1 Of 4:
B Introduction 2 Of 4:
B Introduction 3 Of 4:
B Introduction 4 Of 4:
B1:
B2 - B3:
B4:
B5:
B6 - B7:
B8:
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.