Test Description

The number(s) below refer to step(s) on diagnostic table.

1. 1. The On-Board Diagnostic (OBD II) System Check prompts technician to complete some basic checks and store freeze frame and failure records data on scan tool if applicable. This creates an electronic copy of data taken when malfunction occurred. The information is then stored on scan tool for later reference.
2. 5. A faulty EGR valve can leak a small amount of current from ignition feed circuit to voltage reference. If problem does not exist with EGR valve disconnected, replace EGR valve.
3. 11. The replacement PCM/ECM must be reprogrammed.