The ECM provides ground to one side of the coil of the main relay and the other side is connected to the battery. The ECM monitors battery voltage and the voltage after the main relay.
During engine running, if system voltage is below 10V, ECM sets P0562.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Signal check, low |
•
Poor connection
•
Open in circuit
•
Faulty charging system
•
Faulty main relay
•
Faulty ECM |
Enable Conditions |
•
Time after engine start > 120 sec | |
Threshold value |
•
Voltage : 2.4 ~ 10 V | |
Diagnosis Time |
•
0.2 sec | |
MIL On Condition |
•
No MIL |
