Circuit/System Testing
WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect each KR20 cooling fan relay one at a time.
- Ignition ON, observe that the cooling fans are not activated.
- If the fans are activated, test for a short to voltage in the relay controlled output circuit.
- If the fans are not activated, test or replace the appropriate KR20 cooling fan relay.
NOTE:
The following tests must be performed on each cooling fan relay.