1. Battery Sensor
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 shows P2501 when there is a wide voltage difference between battery sensor and actual value.
Item
Detecting Condition
Possible Cause
DTC Strategy
Signal Monitoring
Open or short in harness
Faulty battery sensor
Poor connection
Enable Conditions
Engine running state
No error related to LIN communication
Threshold Value
There is a wide voltage difference between battery sensor and actual value.
Diagnostic Time
Continuous
MIL ON Condition
NO MIL