Check DLC3
CHECK DLC3The vehicle's ECM uses ISO 9141-2 for communicating.The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 9141-2 format.
HINT: Connect the cable of the hand-held tester to the DLC3, turn the ignition switch ON and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester.
- If communication is normal when the hand-held tester is connected to another vehicle, inspect the DLC3 on the original vehicle.
- If communication is still not possible when the tester is connected to another vehicle, the problem is probably in the tester itself.Consult the Service Department listed in the tester's instruction manual.