P0561
DTC P0561
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptor
DTC P0561
- System Voltage Performance
Circuit/System Description
The transmission control module (TCM) requires a switched ignition voltage input to operate. The TCM continuously monitors the ignition voltage.
Conditions for Running the DTC
The engine speed is 400 RPM or greater.
Conditions for Setting the DTC
Condition 1
The TCM detects ignition voltage 6.5 volts or less for 2 seconds.
Condition 2
The TCM detects a variation in ignition voltage 10 volts or greater 10 times within 1.5 seconds.
Action Taken When the DTC Sets
DTC P0561 is a Type C DTC.
Conditions for Clearing the DTC
DTC P0561 is a Type C DTC.
Diagnostic Aids
* A defective vehicle battery may allow this code to set.
* A defective vehicle charging system may allow this code to set.
* You may have to drive the vehicle in order to experience a condition.
* Although this DTC could indicate an internal voltage condition within the TCM, in most cases, the TCM is not at fault. Investigate thoroughly prior to replacing the TCM.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics Electrical Diagrams
Connector End View Reference
* Component Connector End Views 1-2 Shift Solenoid (SS) Valve (M30)
* Inline Harness Connector End Views X100
Description and Operation
* Transmission General Description Transmission General Description
* Transmission Component and System Description Transmission Component and System Description
* Electronic Component Description Electronic Component Description
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Engine running, accessories OFF, measure and record the battery voltage at the battery terminals. The reading should be between 12.6 and 15 V.
• If not the expected value, refer to Charging System Test Testing and Inspection.
2. Observe the scan tool TCM ignition voltage parameter. The reading should be between 12.6 and 15 V.
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
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, disconnect the harness connector at the TCM.
2. Ignition OFF, all vehicle systems OFF, this may take up to 2 minutes, test for less than 10 ohms between the ground circuit terminal 9 and battery ground and between terminal 69 and battery ground.
• If greater than the specified range, repair the affected ground circuit.
3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 63 and ground.
• If the test lamp does not illuminate, repair the ignition circuit.
• If circuit tests normal, replace the TCM.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
Control Module References Control Module References for TCM replacement, setup, and programming.
Repair Verification
If another DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle and perform the appropriate diagnostic procedure.