Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

The TCCM utilizes an error counting system when setting this code. When the TCCM detects a circuit error, the counter will log a count of 4. When the system operates correctly, the counter will reduce by a count of 1. A total count of 32 must be reached in order for DTC 003 to be set. The system must malfunction at least 25 percent of the time in order for a DTC 003 to be set. It is imperative that the technician test drive the vehicle and request several shifts in order for this code to be properly logged.

In the event that one of the internal TCCM power relays is stuck in the energized state, the TCCM will energize the other motor control circuit to keep the motor from running. All of the transfer case control switch indicators will flash continuously to prompt the driver that service is required. The transfer case system will be disabled and the TCCM power relays will remain energized even with the ignition in the OFF position. This may cause the battery to discharge. Any other condition that sets a DTC 003 will not follow this routine but a fault code will be stored.