2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1599

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1599

4. Ignition ON, monitor DTC Status. DTC P1B10 and P1B0F should have passed last test.

瀚慖f DTC P0C4E or P0C4F sets, proceed to that diagnostic procedure.

瀚慖f DTC P1B10 and P1B0F have passed, clear DTC Information. No further diagnosis is necessary.

瀚慖f DTC P1B10 or P1B0F resets, program the PIM with the latest software version and recheck for DTCs. If the DTC resets after

programming or if the PIM already contains the latest software version, replace the applicable drive motor generator assembly.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Drive Motor with Generator Assembly Removal - 1st Position (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Service and Repair/Overhaul/2ML70 - Automatic Transmission/8. Drive Motor with Generator Assembly Removal -

1st Position)

* Drive Motor with Generator Assembly Removal - 2nd Position (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Service and Repair/Overhaul/2ML70 - Automatic Transmission/13. Drive Motor with Generator Assembly Removal

- 2nd Position)

* Drive Motor Generator Battery Replacement and Shipping Preparation ()

* Drive Motor Battery with Case Overhaul ()

P1B15

DTC P1B15

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 P1B15

- Regenerative Braking Torque Request Circuit

Circuit/System Description

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

its ability to read and write to the memory. The HPCM processor monitors the data to verify that the indicated brake torque request calculation is

correct.

Conditions for Running the DTC

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

* Ignition voltage is 8-18V.

Conditions for Setting the DTC

The control module has detected an internal malfunction.

Action Taken When the DTC Sets

* DTC P1B15 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 P1B15 is a Type A 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