4T45-E - Automatic Transmission
DTC P0562 or P0563
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0562
- System Voltage Low
DTC P0563
- System Voltage High
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The transmission control module (TCM) continuously monitors the system voltage on the ignition voltage circuit.
Conditions for Running the DTC
P0562
The engine speed is 1,200 RPM or greater for 5 seconds.
P0563
The ignition is ON.
Conditions for Setting the DTC
P0562
The TCM detects system voltage is 11 volts or less for 10 seconds.
P0563
The TCM detects system voltage is 18 volts or greater for 10 seconds.
Action Taken When the DTC Sets
DTCs P0562 and P0563 are type C DTCs.
Conditions for Clearing the DTC
DTCs P0562 and P0563 are type C DTCs.
Diagnostic Aids
* Observe the driver information center (DIC) messaging that would indicate the electrical system requires service.
* Inspect for loose or damaged terminals at the generator.
* Inspect for loose or worn generator drive belt.
* Use the scan tool in order to inspect all other modules for voltage related DTCs.
* Running the engine with a battery charger attached may cause DTC P0563 to set.
* Inspect the charging circuit for high resistance.
* Inspect the vehicle battery for open or sulfated cells.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (ME7) (Electrical Diagrams)Automatic Transmission Controls Schematics (MN5) (Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Verification
1. Engine running, accessories OFF, measure and record the battery voltage at the battery terminals. The voltage should be between 12 and 14.5 volts.
• If not within the specified range, refer to Charging System Test (Charging System Test).
2. Observe the scan tool TCM Ignition Voltage parameter. The reading should be between 12 and 14.5 volts.
3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the TCM.
2. Test for less than 10 ohm between the ground circuit terminal 49 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Verify that a test lamp illuminates between the B+ circuit terminal 32 and ground.
• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Verify that a test lamp illuminates between the ignition circuit terminals listed below and ground:
* Terminal 11
* Terminal 31
• If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
5. If all circuits test normal, replace the TCM.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the repair.
Control Module References (Programming and Relearning) for TCM replacement, setup, and programming