Service Information

Cruze

DTC P0562

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
B+/IGN I	P0562	P0562	-	-
Ground	-	P0562	-	-

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 system voltage is between 9.5-18 V.

Conditions for Setting the DTC

The ECM detects a system voltage below 10 V for 5 seconds.

Action Taken When the DTC Sets

•	The charge indicator turns ON.

•	The driver information centre displays the SERVICE CHARGING SYSTEM message.

Conditions for Clearing the DTC

DTC P0562 is a C type DTC.

Diagnostic Aids

•	A low voltage DTC set in multiple modules indicates a concern in the charging system.

•	A low voltage value in multiple modules indicates a concern in the charging system.

•	Inspect the ECM ground connection, to verify that it is clean tight.

Reference Information

Schematic Reference

•	Engine Controls Schematics for the 1.6L (LDE, LLU, and LXV) or 1.8L (2H0)

•	Engine Controls Schematics for the 1.6L (LXT)

Connector End View Reference

Component Connector End Views

Description and Operation

Charging System Description and Operation

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Engine running, accessories OFF, measure and record the battery voltage at the C1 battery terminals. The voltage should be between 12.6 and 15.0 V.

⇒	If not within the specified range, refer to Charging System Test .

Observe the scan tool ECM Ignition 1 Signal parameter. Verify that the scan tool displays a value that is within 2 V of the battery terminal voltage.

Circuit/System Testing

Ignition OFF, disconnect the harness connectors at the K20 ECM.
Ignition OFF, and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 Ω between the ground circuit terminals listed below and ground.

•	Terminal 20 X1 (LDE, LLU, and LXV or 2H0)

•	Terminal 35 X1 (LDE, LLU, and LXV or 2H0)

•	Terminal 1 X2 (LDE, LLU, and LXV or 2H0)

•	Terminal 3 X2 (LDE, LLU, and LXV or 2H0)

•	Terminal 5 X2 (LDE, LLU, and LXV or 2H0)

•	Terminal 43 X2 (LXT)

•	Terminal 44 X2 (LXT)

•	Terminal 73 X2 (LXT)

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

Connect a 15 A fused jumper wire between B+ and the KR75 powertrain relay switch control terminal 87. Ignition ON, verify that a test lamp illuminates between the IGN/B+ circuit terminals listed below and ground:

•	Terminal 50 X1 (LDE, LLU, and LXV or 2H0)

•	Terminal 2 X2 (LDE, LLU, and LXV or 2H0)

•	Terminal 4 X2 (LDE, LLU, and LXV or 2H0)

•	Terminal 6 X2 (LDE, LLU, and LXV or 2H0)

•	Terminal 1 X2 (LXT)

•	Terminal 3 X2 (LXT)

•	Terminal 22 X2 (LXT)

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

If all circuits test normal, replace the K20 ECM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for ECM replacement, setup, and programming