Diagnostic Aids
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM has the capability of providing command to the fan relays even when a scan tool output control is being used. Always refer to the fan control command parameters on the scan tool to know which fans are being commanded ON by the ECM.
- The following tables illustrate the FAN 1 relay, FAN 2 relay and the FAN 3 relay terminal locations in the underhood fuse block:
Cooling FAN 1 Relay
| Terminal Identification | |
|---|---|
| Relay Switch B+ | Relay Coil Control |
| Relay Coil B+ | Relay Controlled Output |
| Front of Vehicle | |
Cooling FAN 2 Relay
| Terminal Identification | |
|---|---|
| Relay Switch B+ | Relay Coil Control |
| - | Relay Controlled Output |
| Relay Coil B+ | Ground |
| Front of Vehicle | |
Cooling FAN 3 Relay
| Terminal Identification | |
|---|---|
| Relay Coil Control | Relay Controlled Output |
| Relay Switch B+ | Relay Coil B+ |
| Front of Vehicle | |