E39 / P0563 00
Read the instructions below then
start the fault diagnostic procedure.
System Voltage High
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Ignition ON for more than 180 seconds. |
Fault criteria:
| Voltage via main relay is greater than 18 V. |
Checking the wiring harness
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.
Diagnostic help
Diagnosis regards:
| To detect the voltage that supplies ECM. |
| Check if the vehicle was connected to a vehicle with 24 V system prior to fault diagnosis. |
Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |
