The PCM provides ground to one side of the coil of the main relay and the other side is connected to the battery. The PCM monitors battery voltage and the voltage after the main relay.
PCM sets DTC P0563 if the PCM detects system voltage higher than the possible range of battery voltage.
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Check system voltage | ● Contact resistance in connectors ● Faulty charging system |
Enable Conditions | ● No main relay failure ● Vehicle speed ＞ 10km/h(6mph) | |
Threshold Value | ● Voltage after main relay when ON ＞ 16V | |
Diagnostic Time | ● 30 sec. |
