P0560
DTC P0560 (3.6L / 5.3L)
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 Descriptor
DTC P0560
- System Voltage
Diagnostic Fault Information
Circuit/System Description
The engine control module (ECM) monitors the system voltage to ensure that the voltage stays within the proper range. Damage to components and incorrect data may occur when the voltage is out of range.
Conditions for Running the DTC
* The vehicle speed is below 40 km/h (25 mph).
* The system voltage is below 11 volts or above 16 volts.
* Engine speed is above 1,500 RPM.
Conditions for Setting the DTC
The ECM detects a system voltage out of range for 5 seconds.
Action Taken When the DTC Sets
DTC P0560 is a C type DTC.
Conditions for Clearing the DTC
DTC P0560 is a C type DTC.
Reference Information
Schematic Reference
* Engine Controls Schematics (Electrical Diagrams) for the 3.6L engine.
* Engine Controls Schematics (Electrical Diagrams) for the 5.3L engine.
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Charging System Description and Operation (Description and Operation)
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
Diagnostic Aids
* A high or low voltage DTC set in multiple modules indicates a concern in the charging system.
* A possible cause of this DTC could be overcharging with a battery charger or jump starting.
* A high or low voltage value in multiple modules indicates a concern in the charging system.
Circuit/System Verification
1. Verify DTC P0560 is set as current, if the DTC is history refer to diagnostic aids.
2. Engine running, observe the scan tool ECM Ignition 1 signal parameter. The ignition 1 signal parameter should read between 11.5 volts - 15.5 volts.
• If not within the specified range refer to Charging System Test (Charging System Test)
3. Measure the voltage at the battery terminals and compare it with the scan tool ECM Ignition 1 signal parameter. Verify that battery terminal and Ignition 1 signal readings do not differ more than 2.0 volts.
• If not within the specified range refer to Circuit/System Testing
Circuit/System Testing
1. Ignition OFF, disconnect the harness connectors at the ECM.
2. Ignition OFF, test for less than 1.0 ohm between the ground circuits to ground.
• If greater than the specified value, test the ground circuit for an open/high resistance.
3. Ignition ON, measure between the Ignition 1 circuits and the ground circuits. The readings should not differ by more than 2 volts than the battery terminal voltage.
• If greater than the specified value, test the Ignition 1 circuits for an open/high resistance. If the circuits test normal replace the ECM.
* Ignition 1 signal 3.6L engine X2 terminals 1- 3- 17- 58.
* Ground circuit 3.6L engine X1 terminal 49.
* Ignition 1 signal 5.3L engine X1 terminal 19 and X2 terminal 13
* Ground circuit 5.3L engine X2 terminal 73
4. If the circuits test normal replace the ECM.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
Control Module References (Programming and Relearning) for ECM replacement, setup, and programming