Scan Tool Hookup

SCAN TOOL HOOKUP

The Scan Tool must be connected to the Data Link Connector (DLC) for communication with the vehicle.

Data Link Connector

The DLC is located in the passenger compartment. It is attached under the instrument panel and accessible from the driver seat.

The DLC is rectangular in design and capable of accommodating up to 16 terminals. The connector has keying features to allow easy connection. The vehicle connector and the test equipment connector have latching features that ensure the test equipment connector will remain mated when properly connected.

Refer to scan tool manufacturer manual for specific cables and/or adapters required for scan tool hookup.

Communication Error

It is possible to get a test fail error from a scan tool when initiating a test or viewing PIDs. The communication error could be caused by operator error, the vehicle wiring or connectors, or the powertrain control module (PCM) and other control modules connected to the DLC wiring. The PCM will respond to a scan tool whenever the scan tool requests a test. Some are normal responses to valid requests. The others are communication error responses. If the scan tool displays any of the test fail error responses reinitialize the scan tool. If the error is still present, GO to Pinpoint Test AE Tests AE , after checking scan tool connections, cable/adapters and entry of vehicle information. Verify auxiliary powertrain control (rpm control) is off when trying to perform self tests.