2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1763
Condition 4
* One IMS direction switch circuit has failed.
* Based upon the remaining IMS circuits the HPCM calculated two directions at the same time.
Condition 5
More than one IMS direction circuit has failed and the HPCM cannot calculate a transmission direction.
Action Taken When the DTC Sets
* DTC P16F2 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 P16F2 is a Type A DTC.
Reference Information
Schematic Reference
Hybrid Controls Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
1. Clear the DTC information.
2. Turn the ignition OFF for 1 minute.
3. Turn the ignition ON.
4. Test for correct operation of the Direction IMS in every range selection. Hold the selector in each gear position for at lease 2 seconds. Refer
to Typical Scan Tool Data.
瀚慖f the Direction IMS operation does not match the logic table proceed with Circuit/System Testing.
5. Retest for DTC P16F2.
瀚慖f the DTC 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 PIM.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool IMS Status parameter should display HI for the R1, R2, D1,
D2 and S signal circuit displays.
瀚慖f a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
瀚慖f the circuit tests normal, replace the PIM.
