Autel Autolink AL419 [26/66] Product troubleshooting

A small number of 1994 and 1995 model year gasoline vehicles are

OBD II compliant. To verify if a 1994 or 1995 vehicle is OBD II

compliant, check the Vehicle Emissions Control Information (VECI)

Label which is located under the hood or by the radiator of most

vehicles. If the vehicle is OBD II compliant, the label will designate

“OBD II Certified”. Additionally, Government regulations mandate

that all OBD II compliant vehicles must have a “common”

sixteen-pin Data Link Connector (DLC).

For your vehicle to be OBD II compliant it must have a 16-pin DLC

(Data Link Connector) under the dash and the Vehicle Emission

Control Information Label must state that the vehicle is OBD II

compliant.

3.11 Product Troubleshooting

This part describes problems that you may encounter while using the

scan tool.

Vehicle Linking Error

A communication error occurs if the scan tool fails to communicate

with the vehicle‟s ECU (Engine Control Unit). You need to do the

following to check up:

 Verify that the ignition is ON.

 Check if the scan tool‟s OBD II connector is securely

connected to the vehicle‟s DLC.

 Verify that the vehicle is OBD2 compliant.

 Turn the ignition off and wait for about 10 seconds. Turn the

ignition back to on and continue the testing.

 Verify the control module is not defective.

Operating Error

If the scan tool freezes, then an exception occurs or the vehicle‟s

ECU (Engine Control Unit) is too slow to respond to requests. You

need to do the following to reset the tool:

 Reset the scan tool.