Conditions for Setting the DTC
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
One of the 3 monitored ignition switch circuits has malfunctioned. The DTC will set, if one of the following situations is present:
Incorrect Ignition Switch Inputs
| BCM Input and Scan Tool Display | Engine Running | ||
|---|---|---|---|
| Ignition Accessory | Ignition 1 | Ignition 0 | |
| Inactive | On | Off | No |
| Active | Off | Off | No |
| Active | On | Off | No |
| Inactive | On | Off | Yes |
| Inactive1 | On | On | Yes |
| Active | Off | Off | Yes |
| Active | Off | On | Yes |
| Active | On | Off | Yes |
| 1 The module sets the DTC 1 minute after it detects the condition. | |||