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.
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HOMESERVICE MANUALSFORD1997ESCORT L4-122 2.0L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDATA LINK CONNECTORDESCRIPTION AND OPERATION
1997 Ford Escort L4-122 2.0L SOHC
Data Link Connector: Description and Operation
1997 Ford Escort L4-122 2.0L SOHCSECTION Description and Operation
PURPOSE
The Data Link Connectors (DLC) provide access to several systems in the vehicle for diagnosis and testing procedures.
OPERATION
The underhood Data Link Connector is used for diagnosis of anti lock brake systems and for energizing the vehicle's fuel pump for testing purposes.
CONSTRUCTION
The in-car OBD II Data Link Connector (OBD II DLC) is used with an OBD II compatible scan tool, such as the Rotunda New Generation STAR tester 007-00500, to diagnose the Electronic Engine Control (EEC) system. It is a standard, 16-pin OBD II data link connector.
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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.