P0563

DTC P0563 System Voltage High

Circuit Description

The ECM monitors the ignition voltage on the ignition feed terminal to make sure that the voltage stays within the proper range. If the ECM detects an excessively high ignition voltage this DTC will set.

Condition for Setting the DTC

^ The ECM detects that the ignition 1 feed circuit voltage is more than 16.5 volts for longer than 5 seconds.

Action Taken When the DTC Sets

^ The ECM illuminates the SVS lamp when the diagnostic runs and fails. Refer to DTC Type Definitions for Action Taken When the DTC Sets - Type C.

Condition for Clearing the DTC

^ Refer to DTC Type Definitions for Condition for Clearing the SVS Lamp DTC - Type C.

Diagnostic Aids

^ A charging system problem may set this DTC.
^ Jump starting the vehicle or a battery charger may have set this DTC

Circuit/System Testing DTC P0563