2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2123

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2123

DTC P0562 or P0563

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions)provides an overview of each diagnostic category.

DTC Descriptors

DTC P0562

- System Voltage Low

DTC P0563

- System Voltage High

Diagnostic Fault Information

Circuit/System Description

The transmission control module (TCM) continuously monitors the system voltage on the Ignition 1 voltage circuits. Lower than normal voltage

may be inadequate to operate the transmission control solenoids properly. Improper solenoid operation may cause erratic transmission operation,

which may result in internal damage. Theses DTC detects high or low TCM voltage for an extended period.

Conditions for Running the DTC

DTC P0562

* Ignition voltage is 8.6 volts or greater.

* Engine speed is 1200 RPM or greater.

* DTC P0563 is not set.

DTC P0563

* Ignition voltage is 8.6 volts or greater.

* DTC P0563 is not set.

Conditions for Setting the DTC

DTC P0562

The TCM detects system voltage is less than 8.6 volts for 12 seconds.

DTC P0563

The TCM detects system voltage is 18 volts or greater for 12 seconds.

Action Taken When the DTC Sets

DTCs P0562 and P0563 are Type C DTCs.

Conditions for Clearing the DTC

DTCs P0562 and P0563 are Type C DTCs.

Reference Information

Schematic Reference

Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)

Connector End View Reference

* Component Connector End Views (See: Diagrams/Connector Views)

* Inline Harness Connector End Views (See: Power and Ground Distribution/Multiple Junction Connector/Diagrams)