Conditions For Running DTC

WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

DTC P1518 is not set.
The ignition is ON and the engine is OFF.
The ignition voltage is more than 8.5 volts.
The Battery Saver Mode is active.