Circuit/System Verification (Diesel)
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, engine OFF, observe the scan tool ECM GEN-F Terminal Signal parameter. The parameter should read 0%.
- Engine running, observe the scan tool ECM GEN-F Terminal Signal parameter. The parameter should read between 5 and 100%.