Circuit/System Testing

WARNING: This page is about a different car, the 2013 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Diagnose and repair any communication DTCs prior to performing this testing.

Ignition ON.
Verify DTC P15F2 is not set.
- If the DTC is set
1. Program the K20 Engine Control Module.
2. Verify the DTC does not set.
  - If the DTC sets, replace the K20 Engine Control Module.
  - If the DTC does not set
3. All OK
- If the DTC is not set
All OK.