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 MANUALSCHEVROLET1998METRO L4-079 1.3L VIN 2 MFIREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDATA LINK CONNECTORDESCRIPTION AND OPERATION
1998 Chevrolet Metro L4-079 1.3L VIN 2 MFI
Data Link Connector: Description and Operation
1998 Chevrolet Metro L4-079 1.3L VIN 2 MFISECTION Description and Operation
There are two data lines that can he accessed by a scan tool. The Electronic Brake Control Module (EBCM) (if equipped) and the Sensing and Diagnostic Module (SDM) are accessed though the PPL wire at the Data Link Connector (DLC-OBD II) at cavity 9. The Powertrain Control Module (PCM) is accessed through the PPL/WHT wire at the DLC-OBD II at cavity 7.
These communication lines are used to monitor module for diagnostic purposes and to check for Diagnostic Trouble Codes (DTCs).
These communication lines are used to monitor module for diagnostic purposes and to check for Diagnostic Trouble Codes (DTCs).
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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.