Scan Tool Setup and Functionality

SCAN TOOL SETUP AND FUNCTIONALITY

Connect the scan tool to the data link connector (DLC) for communication with the vehicle.

The DLC is located in the drivers side compartment. It is attached to the instrument panel under the steering column 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 required scan tool functions are described below:
- monitor, record, and playback of parameter identification (PID)s
- freeze frame PID data
- diagnostic test modes; self-test, clear diagnostic trouble codes (DTCs)
- output test mode
- resetting keep alive memory (KAM)
- diagnostic monitoring test results (mode 6) for on board diagnostic (OBD) on board monitors
- on board system readiness (OBD monitor completion status)

Some of these functions are described. Refer to the scan tool manufacturer's manual for specific information on the scan tool setup, operation, and specific cables and adapters required.

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 responds 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, after checking the scan tool connections, cable/adapters, and entry of vehicle information. Verify the power take-off system or auxiliary idle control (if equipped) is off when trying to carry out the self-tests. Test AE: Unable To Activate Self-Test/Network Communication Error