Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

P0480

Ignition ON, command the FC Relay 1 Command ON and OFF with a scan tool while observing the following control circuit status parameters.
- FC Relay 1 CKT Short GND Test Status
- FC Relay 1 CKT Open Test Status
- FC Relay 1 CKT Short Volts Test Status
  Each parameter should toggle between OK and Not Run or Not Run and OK.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

P0481

Ignition ON, command the FC Relay 2 Command ON and OFF with a scan tool while observing the following control circuit status parameters.
- FC Relay 2 CKT Short GND Test Status
- FC Relay 2 CKT Open Test Status
- FC Relay 2 CKT Short Volts Test Status
  Each parameter should toggle between OK and Not Run or Not Run and OK.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

P0482

Ignition ON, command the FC Relay 3 Command ON and OFF with a scan tool while observing the following control circuit status parameters.
- FC Relay 3 CKT Short GND Test Status
- FC Relay 3 CKT Open Test Status
- FC Relay 3 CKT Short Volts Test Status
  Each parameter should toggle between OK and Not Run or Not Run and OK.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.