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.
2002 Ford ZX2 AutomaticFACTORY OEM SERVICE PROCEDURE
EATC Module C228b
WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
EATC MODULE C228B CIRCUIT REFERENCE
| Pin Number(s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 3 | CKT 3051 (BK/YE) In-vehicle temperature and solar radiation sensor return | Greater than 10,000 ohms to chassis ground and 0 volts. |
| 4 | CKT 3050 (WH/OG) In-vehicle temperature sensor reference voltage | Greater than 4.5 volts with EATC on. |
| 5 | CKT 476 (PK/YE) RH solar radiation sensor input | Greater than 4.5 volts with EATC on. |
| 14 | CKT 468 (BN) LH solar radiation sensor input | Greater than 4.5 volts with EATC on. |
| 18 | CKT 1120 (BK/WH) EATC module to front blower motor speed control module | Greater than 10,000 ohms to chassis ground and 0 volts. |
Factory Service Tools
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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.
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