The ECM monitors battery voltage while the engine is running. The ECM looks at voltage fed to the ECM from the Main Relay.
During engine running, if system voltage is above 16V, ECM sets P0563.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Voltage too high |
•
Poor connection
•
Short in circuit
•
Faulty charging system
•
Faulty main relay
•
Faulty ECM |
Enable Conditions |
•
Engine works | |
Threshold value |
•
System voltage > 16V | |
Diagnosis Time |
•
Continuous | |
MIL On Condition |
•
2 driving cycles |
Coil Resistance | 70Ω ~ 120Ω |
