ECM

DTC P0562 (ECM)

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 P0562 00
- System Voltage Low - ECM

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 engine is running.

Conditions for Setting the DTC

The ECM detects that the system voltage is less than 10 volts for 5 seconds.

Action Taken When the DTC Sets

DTC P0562 is a type C DTC.

Conditions for Clearing the DTC

DTC P0562 is a type C DTC.

Reference Information
Schematic Reference

* Engine Controls Schematics (Electrical Diagrams) for the 2.4L (LAT and LE5) engines
* Engine Controls Schematics (Electrical Diagrams) for the 3.5L (LZ4) engine
* Engine Controls Schematics (Electrical Diagrams) for the 3.6L (LY7) engine
* Starting and Charging Schematics ([1][2]Electrical Diagrams)

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 Testing

1. Engine running, accessories OFF, measure and record the battery voltage at the battery terminals. The voltage should be between 12.6 and 15.0 volts.

• If not within the specified range, refer to Charging System Test (Charging System Test).

2. Ignition OFF, disconnect the harness connectors at the ECM.
3. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 30 seconds. Test for less than 5 ohms between the appropriate ground circuit terminal listed below and ground.

* Terminal 73 X1 (LZ4)
* Terminal 73 X2 (LAT, LE5, LY7)

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

4. Verify that a test lamp illuminates between the B+ circuit terminal 20 X1 and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

5. Ignition OFF, connect a 3A fused jumper between the appropriate PWR/TRN relay control circuit terminal listed below and ground.

* Terminal 13 X1 (LE5)
* Terminal 40 X1 (LY7)
* Terminal 59 X1 (LZ4)
* Terminal 40 X2 (LAT)

6. Ignition ON, verify that a test lamp illuminates between the appropriate ignition circuit terminals listed below and ground:

* Terminal 3 X1 (LE5)
* Terminal 18 X1 (LAT, LY7, LZ4)
* Terminal 19 X1 (LAT, LE5, LY7, LZ4)
* Terminal 47 X1 (LZ4)
* Terminal 73 X1 (LE5)
* Terminal 13 X2 (LAT, LY7)

• If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.

7. If all 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.