For a complete wiring diagram Refer to Section 8WWhen Monitored:With the ignition on.Set Condition:If the Anti-Lock Brakes Module detects system voltage is below 9.5 volts.Possible CausesECM OR PCM DTCs PRESENTVEHICLE BATTERY / CHARGING SYSTEMANTI-LOCK BRAKES MODULE1. DTCS IN THE PCMThis DTC must be active for the results of this test to be valid.Turn the ignition on.With the scan tool, read and record DTCs from the PCM.With the scan tool, read and record Freeze Frame information.With the scan tool, erase DTCs.Start the engine.With the scan tool, read and record DTCs.With the scan tool read DTCs from the PCM.Are any charging system codes present?YesRepair the charging system DTC in the PCM.Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE). NoGo To 2 2. CHARGING SYSTEM FAILUREStart the engine.Connect voltmeter to vehicle battery.Is the vehicle battery voltage under 10 volts?NoPerform the ABS Intermittent Condition diagnostic procedure in this Section.Refer to the ABS-INTERMITTENT CONDITION TEST. (Refer to 5 - BRAKES - DIAGNOSIS AND TESTING) YesRepair the charging system per service information.Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).