2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1667

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1667

Condition 1

The transmission direction, indicated by both the IMS range and direction switch circuits, are valid but do not match.

Condition 2

* One IMS direction switch circuit has failed.

* The HPCM calculates a transmission direction base upon the remaining IMS direction circuits.

* The calculated HPCM transmission direction does not match the direction indicated by the IMS range switch circuits.

Condition 3

* One IMS direction switch circuit has failed.

* The HPCM calculates a transmission direction based upon the remaining IMS direction circuits.

* The IMS range switch indicated a transitional position.

Condition 4

* One IMS direction switch circuit has failed.

* The HPCM calculates a transmission direction based upon the remaining IMS direction circuits.

* The TCM has indicated at least one IMS range switch circuit has failed.

Condition 5

* More than one IMS direction circuit has failed and the HPCM cannot calculate a transmission direction.

* The IMS range switch indicates a transitional position.

Condition 6

* More than one IMS direction circuit has failed and the HPCM cannot calculate a transmission direction.

* The TCM has indicated at least one IMS range switch circuit has failed.

Action Taken When the DTC Sets

* DTC P16F4 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 P16F4 is a Type A DTC.

Diagnostic Aids

If IMS circuit DTCs P181C-P181F, P183A-P183F, P184A or P184B are set, perform those diagnostics first.

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