Run/Crank Relay
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
The run/crank relay control circuit is connected to a constant ground and is switched by the ignition 1 circuit or the BCM. The BCM, will in lieu of the ignition switch position, activate the Run/Crank relay during a remote start event. The Run/Crank relay supplies a power signal to the following circuits, when the a Run or Crank power mode is selected:
- Automatic transmission shift indicator
- Automatic transmission (A/T)
- Switched power feeds to the BCM
- Electronic brake control module (EBCM)
- Electronic ignition module (spark control)
- Electronic power steering module (EPS)
- Fuel injectors
- Powertrain control module (PCM)
- Park neutral position (PNP) switch