P0560

DTC P0560

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 2 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.


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.



Reference Information
Schematic Reference

* Engine Controls Schematics (Electrical Diagrams) for the 3.6L engine
* Engine Controls Schematics (Electrical Diagrams) for the 4.4L engine
* Engine Controls Schematics (Electrical Diagrams) for the 4.6L 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


Circuit/System Verification

1. Verify DTC P0560 is set as current.
2. Engine running, measure and record the voltage at the battery terminals.
3. Verify that the battery voltage is 12.6-15.5 volts.

• If the battery voltage is not within the specified range, refer to Charging System Test (Charging System Test)

4. Engine running, observe the scan tool ECM Ignition 1 signal parameter.
5. Verify that battery terminal voltage and ECM Ignition 1 signal parameter readings do not differ by more than 2 volts.



Circuit/System Testing

1. Ignition OFF, disconnect the harness connectors at the ECM.
2. Ignition OFF, test for less than 3.0 ohms between the ground circuits and ground.

• If greater than the specified range, test the ground circuits for an open/high resistance.

3. Ignition ON, verify a test lamp illuminates between the Ignition 1 signal circuits and ground.

• If the test lamp did not illuminate , test the Ignition 1 signal circuits for an open/high resistance.


* Ignition 1 signal 3.6L X2 terminal 5 and X2 terminal 54
* Ignition 1 signal 4.4L / 4.6L X1 terminal 19 and X2 terminals 13 and 28
* Ground circuits 3.6L X2 terminals 1, 2 and 4
* Ground circuits 4.4L / 4.6L X2 terminal 73 and X3 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