C2100–BATTERY VOLTAGE LOW For a complete wiring diagram Refer to Section 8WWhen Monitored:Continuously.Set Condition:The Automatic Sway-Bar System detects that system voltage is below 9.0 volts for 60 seconds.
Possible CausesINTERMITTENT BATTERY VOLTAGE LOWCHARGING SYSTEM DTCS PRESENT(A959) FUSED B+ CIRCUIT OPEN OR HIGH RESISTANCEAUTOMATIC SWAY-BAR SYSTEM (ASBS)
Diagnostic Test1.CHARGING SYSTEM DTCS PRESENTIgnition on.With the scan tool, select View DTCs in the Powertrain Control Module.Are there any Charging System or related voltage DTCs present?YesRefer to the symptom list and perform any Charging System DTC diagnostic procedures before continuing with this test.NoGo to 22.DTC IS ACTIVEWith the scan tool, select View DTCs in the ASBS.Is the status Active for this DTC?YesGo to 3NoGo to 53.(A959) FUSED B+ CIRCUIT OPEN OR HIGH RESISTANCETurn the ignition off.Disconnect the ASBS harness connector.Turn the ignition on.With a 12–volt test light connected to ground, check the (A959) Fused B+ circuit in the ASBS harness connector.The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.Does the test light illuminate brightly?Yes Go to 4No Repair the (A959) Fused B+ circuit for an open circuit or high resistance.Perform ASBS VERIFICATION TEST.(Refer to 2 - SUSPENSION/ACTIVE CHASSIS - STANDARD PROCEDURE)4.AUTOMATIC SWAY-BAR SYSTEM (ASBS)View repair.RepairReplace the Automatic Sway-Bar System Module in accordance with the Service information.Perform ASBS VERIFICATION TEST.(Refer to 2 - SUSPENSION/ACTIVE CHASSIS - STANDARD PROCEDURE)5.INTERMITTENT WIRING AND CONNECTORSThe conditions necessary to set this DTC are not present at this time.Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.Look for the data to change or for the DTC to reset during the wiggle test.Were any problems found?YesRepair as necessary.Perform ASBS VERIFICATION TEST.(Refer to 2 - SUSPENSION/ACTIVE CHASSIS - STANDARD PROCEDURE)NoTest complete.