Pinpoint Test C : P0563

NOTE: The Inverter System Controller (ISC) is referred to as the SOBDMC (Secondary On-Board Diagnostic Control Module C) in the scan tool.

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SOBDMC P0563:00	System Voltage High: No Sub Type Information	This DTC sets when the internal processor voltages are greater than a calibrated range.

Possible Sources

C1 CHECK THE INVERTER SYSTEM CONTROLLER (ISC) CIRCUIT FOR VOLTAGE

Measure:

Positive Lead	Measurement / Action	Negative Lead
C199A-14	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 10.5 V?

Yes

GO to C2

No	DIAGNOSE the low voltage symptom. Using a diagnostic scan tool, clear the Inverter System Controller (ISC) DTCs.

C2 CHECK THE INVERTER SYSTEM CONTROLLER (ISC) CIRCUIT FOR VOLTAGE

Measure:

Positive Lead	Measurement / Action	Negative Lead
C199A-14	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage less than 16V?

Yes

GO to C3

No	DIAGNOSE the high voltage symptom. Using a diagnostic scan tool, clear the Inverter System Controller DTCs.

C3 CHECK FOR INVERTER SYSTEM CONTROLLER (ISC) DIAGNOSTIC TROUBLE CODES (DTCS)

Allow the Inverter System Controller (ISC) to complete a normal power down sequence.

Using a diagnostic scan tool, perform the Inverter System Controller (ISC) self-test.

Was DTC P0563 read from the Inverter System Controller (ISC)?

Yes	DTC P0563 frequently sets after the vehicle has been jump-started. A key cycle, followed by clearing DTCs is expected to clear this DTC, if the DTC continuously returns, INSTALL a new Inverter System Controller (ISC). REFER to: Inverter System Controller [SOBDMC] .

No	Test is complete, no faults were found.