DTC B22A1 Battery Current Sensor: Description

The battery current sensor converts current to voltage, and outputs the value to the electric power control ECU. The electric power control ECU detects the battery condition, and performs load control and generator control.

DTC DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
B22A1	Electric power control ECU detects one of following conditions: +B short, GND short or open in VC terminal Open in E2 terminal B short, GND short or open in IB terminal B short or open in THB terminal	Battery current sensor Passenger side junction block (Electric power control ECU) Wire harness