2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2128

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2128

Control Module References (See: Testing and Inspection/Programming and Relearning) for FPCM replacement, setup, and programming.

2ML70 - Automatic Transmission

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 Descriptor

DTC P0562

- System Voltage Low

DTC P0563

- System Voltage High

Circuit/System Description

The transmission control module continuously monitors the system voltage on the Ignition voltage circuits. The transmission control module is

located within the control solenoid valve assembly and is not serviced separately. 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

transmission damage.

Conditions for Running the DTC

P0562

The engine is running.

P0563

Ignition voltage has been greater than 12 V for 1 second this ignition cycle.

Conditions for Setting the DTC

P0562

The TCM detects system voltage is less than 10 V for 5 out of 6 seconds.

P0563

The TCM detects system voltage is greater than 18 V for 5 out of 6 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.

Diagnostic Aids

* Observe the driver information center messaging that would indicate the electrical system requires service.

* Inspect for the following conditions:

- Loose or damaged battery terminals

- Loose or corroded connections at the transmission

- Loose or corroded connections at the accessory power module