Transmission Control System

DTC P0562: System Voltage Low





Circuit Description
The Transaxle Control Module (TCM) is an electronic device which monitors inputs to control various transaxle functions including shift quality and transaxle sensors, switches and components to process for use within its control program. Based on this input information, the TCM controls various transaxle output functions and devices.

Conditions for Setting the DTC
^ System voltage is less than 8.5 V.
^ Transaxle input voltage is too low.
^ Engine speed is greater than 500 rpm.
^ Immediately after the above condition occurs.

Action Taken When the DTC Sets
^ The Malfunction Indicator Lamp (MIL) will illuminate.
^ The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer.
^ Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control.
^ After ignition OFF/ON: 3rd gear by hydraulic control. Possible P, R and N also possible.
^ Power supply cut OFF to the EDS valve.

Conditions for Clearing the DTC
^ The MIL will turn OFF when the malfunction has not occurred after three-ignition cycle.
^ A history DTC will clear after 40 consecutive warm up cycles without a fault.
^ Using a scan tool can clear history DTCs.

Diagnostic Aids
^ Inspect the poor wiring harness connection for TCM connectors and transaxle wiring connectors.
^ Inspect the improperly formed or damaged terminals.

Troubleshooting