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Check DLC3

DLC3 (Data Link Connector 3)







The vehicle's ECM uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.

HINT: The DLC3 is the interface prepared for reading various data from the vehicle's ECM. After connecting the cable of a hand-held tester, turn the ignition switch on (IG) and turn the tester ON.

If a communication failure message is displayed on the tester screen (on the tester: UNABLE TO CONNECT TO VEHICLE), a problem exists in either the vehicle or tester. In order to identify the location of the problem, connect the tester to another vehicle.

If communication is normal: Inspect the DLC3 on the original vehicle.

If communication is impossible: The problem is probably with the tester itself. Consult the Service Department listed in the instruction manual.
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