Conditions For Setting DTC
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
DTC B0100 sets when SDM does not receive a valid identification message from EFS within 5 seconds of EFS being powered up, when a status message is not received or when SDM has tried twice to reset EFS.
DTC B0101 sets when SDM receives 4 consecutive NOK messages from EFS. DTC. DTC B0102 will set when SDM has received an identification message from EFS which does not match identification message stored in SDM and SDM has tried twice to reset EFS.