Circuit Description
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
The PCM has the ability to disable cruise control if conditions are detected which would make cruise control operation undesirable. The following conditions may cause cruise to be inhibited by the PCM:
- Engine not running long enough for cruise control operation.
- Transaxle range switch indicates park, neutral, low, or reverse gear selected.
- Engine speed is too high or too low.
- Vehicle speed is too high or too low.
- ABS system is active for longer than 2 seconds.
- Vehicle acceleration or deceleration rate is too high.
If any of these conditions are present, the PCM will interrupt the ground on the cruise inhibit circuit to request that cruise control be disengaged. If the cruise status signal indicates that cruise control is still engaged while the PCM is inhibiting cruise control operation, DTC P1554 will be set.