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Conditions for Setting the DTC The difference between the low precision battery voltage circuit reading and the high precision Action Taken When the DTC Sets The generator battery control module will request the driver information center (DIC) message of The generator battery control module uses the less accurate battery positive voltage circuit for Conditions for Clearing the DTC During the current ignition cycle, the difference between the less precision battery positive Clear the DTC with a scan tool. Diagnostic Aids Recommended action: Check the Batt + voltage and Batt + sense voltage wires for an open or short low condition. Check the Batt - ground and Batt - sense ground wires for an open or short high condition. Clear the codes. Cycle the ignition. If a fault condition persists, replace the module. DTC B1390 IMPORTANT: You must cycle the ignition after clearing the DTC to turn OFF the DIC message of Service Charging System. IMPORTANT: You must cycle the ignition after clearing the DTC to turn OFF the DIC message of Service Charging System. Step Action Values Yes No Schematic Reference: Starting and Charging Schematics
2007 Hummer H3 2007 ENGINE Engine Electrical - H3
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