Data Link Communications System Check. Pontiac Firefly (Canada) 1999

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 1999 🢒 Firefly (Canada) 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Data Link Communications System Check

Step

Action

Normal Results

Abnormal Results*

Connect the scan tool to the vehicle.

The scan tool can interface with the ABS and operate correctly.

Scan Tool Does Not Communicate with EBCM

Connect the scan tool to the vehicle.

The scan tool can interface with the non- ABS systems and operate correctly.

•	Scan Tool Does Not Communicate with Components

•	Scan Tool Does Not Communicate with UART Data Line

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.