Inspect the DLC3

Inspect the DLC3







The vehicle's ECM uses ISO 9141-2 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 9141-2 format.

HINT:
Connect the cable of the OBD II scan tool of the hand-held tester to the DLC3, turn the ignition switch ON and attempt to use the OBD II scan tool or the hand-held tester If the screen displays UNABLE TO CONNECT TO VEHICLE, a problem exists in the vehicle side or the tester side.
- If communication is normal when the scan tool or the hand-held tester is connected to another vehicle, inspect the DLC3 on the original vehicle.
- If communication is still impossible when the scan tool or the hand-held tester is connected to another vehicle, the problem is probably in the scan tool or the hand-held tester itself. Consult the Service Department listed in the tester's instruction manual.