P0563

DTC P0563 System Voltage High




Circuit Description
The powertrain control module (PCM) monitors the system voltage on the ignition teed terminals to the PCM. A system voltage DTC will set whenever the voltage is above a calibrated value.

Conditions for Setting the DTC
- Ignition "ON".
- System voltage is above 16 volts for 40 seconds.

Action Taken When the DTC Sets
- The PCM will ON the MIL after second trip with detected the fault.
- The PCM will store conditions which were present when the DTC was set as Freeze Frame and in the Failure Records data.

Conditions for Clearing the MIL/DTC
- A history DTC P0563 will clear after 40 consecutive warm-up cycles have occurred without a fault.
- DTC P0563 can be cleared by using the Tech 2 "Clear Info" function or by disconnecting the PCM battery feed.

Diagnostic Aids
If the DTC sets when an accessory is operated, check for a poor connection or excessive current draw.

Steps 1 - 5:

Test Description