2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1611
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P1AFB
DTC P1AFB or P1B01
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 P1AFB
- Drive Motor 1 Control Module Programmable Logic Device Security Code
DTC P1B01
- Drive Motor 2 Control Module Programmable Logic Device Security Code
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. MCM 1 programs the
PLD with software at every ignition ON event. MCM 1 and 2 verify that the PLD is programmed successfully.
Conditions for Running the DTC
* The ignition is in RUN or CRANK.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected an internal PLD malfunction.
Action Taken When the DTC Sets
* DTCs P1AFB and P1B01 are Type A DTCs.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTCs P1AFB and P1B01 are Type A DTCs.
Diagnostic Aids
An intermittent loss of battery voltage to the drive motor generator power inverter module assembly (PIM) may set this DTC.
Reference Information
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
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. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTC P1AFB or P1B01.
