General Information
Engine Control
U1111 Battery Sensor fault detected by ECU - General Information
Component Location
General Description
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 PCM. PCM controls generating voltage by duty cycle based on these signals.
DTC Description
PCM sets this code when error bit in LIN messages from battery sensor indicates "1"
DTC Detecting Condition
Diagnostic Circuit Diagram
Signal Waveform & Data
Fig 1) Signal waveforms of battery sensor