2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1775
DTC Descriptor
DTC P16F9
- Control Module Shutdown Performance
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 8-18V.
Conditions for Setting the DTC
The control module has detected the internal PLD has not turned ON or OFF correctly.
Action Taken When the DTC Sets
* DTC P16F9 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 P16F9 is a Type A DTC.
Diagnostic Aids
A low 12V battery condition, an intermittent loss of power, or loss of communication 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. Inspect for DTC P0562 or any communication U-code DTCs.
锟斤拷If the specified DTCs have set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Clear the DTC information.
3. Ignition OFF for 1 minute.
4. Ignition ON.
5. Retest for DTC P16F9.
Circuit/System Testing
1. Inspect for DTC P0562 or any communication DTCs.
锟斤拷If the specified DTCs have set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Ignition OFF.
3. Wait 2 minutes.
4. Disconnect PIM connector X1.
5. Wait 2 minutes.
6. Reconnect PIM connector X1.
7. Ignition ON, retest for DTC P16F9.
