2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1669

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1669

Computers and Control Systems/Transmission Position Sensor/Switch/Service and Repair/2ML70 - Automatic Transmission).

* Transmission Control Wiring Harness Extension Harness Removal (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Service and Repair/Overhaul/2ML70 - Automatic Transmission/5. Transmission Control Wiring Harness Extension

Harness Removal).

P16F5

DTC P16F5

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 P16F5

- Control Module Programmable Logic Device

Circuit/System Description

This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM and each

Motor Control Module (MCM) utilize a programmable logic device (PLD) to perform certain input and output functions. The HPCM monitors the

ability of the PLD to perform these functions.

Conditions for Running the DTC

* The control module runs the program to detect an internal fault when the key is ON.

* Ignition voltage is 8-18 volts.

Conditions for Setting the DTC

The control module has detected an internal PLD malfunction.

Action Taken When the DTC Sets

* DTC P16F5 is a Type A DTC.

* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.

Conditions for Clearing the DTC

DTC P16F5 is a Type A DTC.

Diagnostic Aids

An intermittent loss of battery power to the drive motor generator power inverter module assembly (PIM) may set this DTC.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Circuit/System Verification

1. Clear the DTC information.

2. Turn the ignition OFF for 1 minute.

3. Turn the ignition ON.

4. Retest for DTC P16F5.

Circuit/System Testing

1. Ignition OFF, disconnect the 12V battery. Refer to Battery Negative Cable Disconnection and Connection (See: Starting and

Charging/Battery/Battery Cable/Negative/Service and Repair/Battery Negative Cable Disconnection and Connection).