KR20 Cooling Fan Relay
WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the KR20 cooling fan relay.
- Test for 70-110 Ω between terminals 85 and 86.
- Measure the resistance between the terminals listed below. The DMM should display OL:
- 30 and 86
- 30 and 87
- 30 and 85
- 85 and 87
- If less than the specified range, replace the KR20 cooling fan relay.
- Connect a 20 A fused jumper wire between relay terminal 85 and B+. Connect a jumper wire between relay terminal 86 and ground. Test for less than 2 Ω between terminals 30 and 87.
- If greater than the specified range, replace the KR20 cooling fan relay.