TM 10-3930-675-20-10025 00-24ENGINE BATTERY VOLTAGE CIRCUITS TROUBLESHOOTING - CONTINUED0025 00Table 6. Error Code 1597 - Voltage Monitor, Low Voltage Failure Troubleshooting Procedures - Continued.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONError Code 1597 - Voltage Monitor, Low VoltageFailure - Continuedd. Measure resistance fromharness connector pin 18 toall other pins in OEMconnector.e. Measure resistance fromharness connector pin 28 toall other pins in OEMconnector.Table 7. Error Code 1598 - Voltage Monitor, Very Low Voltage Failure Troubleshooting Procedures.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONError Code 1598 - Voltage Monitor, Very LowVoltage Failure1. Check battery and alternatorcable connections for looseconnections and corrosion.Tighten battery connections andclean battery terminals asrequired.2. Turn ignition switch to OFFposition and measure batteryvoltage from positive (+)terminal to negative (-)terminal. Voltage should be atleast 12V. Check each batteryin system.If voltage is not as required,charge or replace battery (WP0107 00).+12V = STATIC+6V = START
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