The purpose of the System Voltage is to detect an excessively low or high system voltage that may be caused by a malfunctioning charging system.
System Voltage is the ignition voltage potential at the Powertrain Control Module (ECM)
ECM measures and compares voltage from ignition key and each relay. With this mechanism, ECM knows if the main relay switch turns on after IG on or if turns OFF after IG off.
If ECM detects malfunction in power supply system, ECM sets DTC P0560.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage check |
•
Poor connection
•
Open / Short
•
Main relay |
Enable Conditions |
•
Engine speed = 0rpm
•
Main relay condition off | |
Threshold Value |
•
Counter of nonplausible voltage detection (higher than 0V) ≥ 5 times | |
Diagnostic Time |
•
Continuous | |
MIL ON Condition |
•
DTC only |
