Aisin 81-40LE - Automatic Transmission

DTC P0563

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0563 System Voltage High

Conditions for Setting the DTC

* The system voltage is too high.
* The transmission control module (TCM) detects that the voltage is greater than 18 volts for 0.5 second continuously.
* The engine revolution is 600 RPM or greater.

Action Taken When the DTC Sets

The TCM will request the illumination of the Hold/Malfunction Indicator Lamp (MIL) and store the DTC when the TCM detects failures on 2 consecutive ignition cycles.

Conditions for Clearing the DTC

* The TCM turns off the Hold/Malfunction Indicator Lamp (MIL) when no further failures are detected on the next ignition cycles.
* The scan tool can clear the DTC from the TCM history.
* The TCM clears the DTC from the TCM history memory after 40 consecutive ignition cycles without fault.

Cause of Failure

* The TCM wiring harness and connectors
* The battery
* The TCM