P16F2

DTC P16F2

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructionsprovides an overview of each diagnostic category.

DTC Descriptor
DTC P16F2
- Control Module Transmission Direction Switch Input Circuitry Performance

Circuit/System Description

The automatic transmission manual shift shaft position switch assembly, also called the internal mode switch assembly, contains two sliding hall-effect switch assemblies attached to the control valve body within the transmission. The 9 outputs from the switches indicate which position is selected by the transmission manual shaft. Four outputs (A, B, C, P) are range selection inputs to the transmission control module (TCM). Five outputs (R1, R2, D1, D2, S) are direction selection inputs to the hybrid powertrain control module. The Range input signals are represented as TCM scan tool parameters Internal Mode Switch A, B, C, and P. The Direction input signals are represented as hybrid powertrain control module scan tool parameters Internal Mode Switch 2 - R1, R2, D1, D2, and S. The input voltage at the modules is high when a switch is open and low when a switch is closed to ground. Each control module independently supplies power and ground to its respective switch assembly.

The hybrid powertrain control module is internal to the power inverter module, often referred to as the drive motor generator power inverter module, and is not serviced separately. The hybrid powertrain control module compares the internal mode switch requested direction to other data to verify that the indicated direction and range switch calculation is correct.

Conditions for Running the DTC

* The vehicle is ON.
* Ignition voltage is greater than 9.5 V.

Conditions for Setting the DTC

Condition 1
* No internal mode switch direction switch DTCs are set.
* A valid internal mode switch direction is indicated by the internal mode switch circuits does not match the direction indicated by the hybrid powertrain control module software calculation.

Condition 2
* No internal mode switch direction switch DTCs are set.
* Two valid internal mode switch directions are indicated at the same time.

Condition 3
* One internal mode switch direction switch circuit has failed.
* The hybrid powertrain control module calculates a transmission direction based upon the remaining internal mode switch circuits but it does not match the direction indicated by the hybrid powertrain control module software calculation.

Condition 4
* One internal mode switch direction switch circuit has failed.
* Based upon the remaining internal mode switch circuits the hybrid powertrain control module calculated two directions at the same time.

Condition 5

More than one internal mode switch direction circuit has failed and the hybrid powertrain control module cannot calculate a transmission direction.

Action Taken When the DTC Sets

* DTC P16F2 is a Type A DTC.
* The hybrid powertrain control module requests the hybrid powertrain control module 2 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 Hybrid Controls Schematics
Connector End View Reference

Component Connector End Views Hybrid/EV Battery Pack X1 A4
Electrical Information Reference

* Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference

Control Module References Control Module Referencesfor scan tool information

Circuit/System Verification

1. Verify that DTC P181C, P181D, P181E, P181F, P183A, P183B, P183C, P183D, P183E, P184A or P184B is not set.

• If any of the DTCs are set, refer to DTC P181C-P181F, P183A-P183E, P184A, or P184B P181C.

2. Verify that DTC P16F2 is not set.

• If the DTC is set, program the hybrid powertrain control module. If the DTC resets, replace the T6 power inverter module.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

Control Module References Control Module Referencesfor Drive Motor Generator Power Inverter Module, also called the power inverter module, Replacement, programming and setup