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.
Status Lights: Notes
As soon as "PCM?" is selected, the Electronic Climate Control (ECC) panel begins display of PCM Status Lights. PCM Status Lights will continue to be displayed until PCM diagnostic functions are exited. PCM Status Lights show the current state of certain discrete PCM inputs and outputs by turning on or off certain indicators on the ECC panel. See Fig 1.
Use the Manual With the Right Hardware
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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.