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.
Diagnostic Aids
CCRM interfaces with the EEC-V system to provide control for cooling fan and A/C clutch. CCRM also contains EEC-V power relay, which provides battery power (VPWR) to the Powertrain Control Module (PCM) and EEC-V system. Perform this test only when instructed by QUICK TEST or if directed by a CIRCUIT. This test is only intended to diagnose the following:
- CCRM including EEC power relay, Fan Control/Low Fan Control (FC/LFC) relay.
- Harness circuits (B+, FANM, FPM, FP, FC KPWR, PWR GND, LFC, HFC, A/C, ACCS and WAC).
- Powertrain Control Module (PCM).
To prevent replacing good components, be aware the following non-EEC related components or systems may be at fault:
- A/C system.
- Fuel system.
- Starting and charging system.
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.