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 StandardFACTORY OEM SERVICE PROCEDURE

Symptom Chart

WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM

Condition	Possible Sources	Action
No communication with the driver seat module (DSM)	DLC. Battery junction box (BJB) fuse 21 (20A) Central junction box (CJB) fuse 7 (5A) Circuit 29-AH80 (OG/WH) Circuit 30-AH80 (RD) Circuit 31-AH80 (BK) Circuit 91-AH80 (BK) DSM C341b DSM C341c DSM Diagnostic tool.	Go To PINPOINT TEST V: NO COMMUNICATION WITH THE DRIVER SEAT MODULE (DSM) .

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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.