Many control units have applied to vehicle as it becomes more eletrolnical. These units control their own system based on information from diverse sensors. Therefore necessity of common use of diverse sensor information and importance of stable power supply are gathering strength. Battery sensor is mounted on battery (-) terminal. It transmits battery voltage, current, temperature information to ECM. ECM controls generating voltage by duty cycle based on these signals.
ECM sets this code when error bit in LIN messages from battery sensor indicates "1"
Item
Detecting Condition
Possible cause
DTC Strategy
Signal Monitoring
Faulty battery sensor
EnableConditions
Engine Run Time = 2sec.
Ignition Voltage = 11V
Threshold value
Battery sensor error
Diagnosis Time
Continuous
MIL On Condition
NO MIL ON(DTC only)
Fig 1) Signal waveforms of battery sensor