P16F4

DTC P16F4

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 P16F4
- Control Module Transmission Range Control Performance

Circuit/System Description

The internal mode switch assembly is a sliding contact switch located within the transmission. The internal mode switch is integrated into the Manual Shift Shaft Position Switch and is not serviced separately. The nine outputs from the switch 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 input voltage at the module is high when the switch is open and low when the switch is closed to ground.

The hybrid powertrain control module compares the internal mode switch requested direction to other data to verify that the indicated direction range switch calculation is correct.

Conditions for Running the DTC

* The ignition is ON.
* Ignition voltage is at least 8 V and no more than 18 V.

Conditions for Setting the DTC

Condition 1

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

Condition 2
* One internal mode range direction switch circuit has failed.
* The hybrid powertrain control module calculates a transmission direction base upon the remaining internal mode range direction circuits.
* The calculated hybrid powertrain control module transmission direction does not match the direction indicated by the internal mode range switch circuits.

Condition 3
* One internal mode range direction switch circuit has failed.
* The hybrid powertrain control module calculates a transmission direction based upon the remaining internal mode range direction circuits.
* The internal mode range switch indicated a transitional position.

Condition 4
* One internal mode range direction switch circuit has failed.
* The hybrid powertrain control module calculates a transmission direction based upon the remaining internal mode range direction circuits.
* The TCM has indicated at least one internal mode range switch circuit has failed.

Condition 5
* More than one internal mode range direction circuit has failed and the hybrid powertrain control module cannot calculate a transmission direction.
* The internal mode range switch indicates a transitional position.

Condition 6
* More than one internal mode range direction circuit has failed and the hybrid powertrain control module cannot calculate a transmission direction.
* The TCM has indicated at least one internal mode range switch circuit has failed.

Action Taken When the DTC Sets

* DTC P16F4 is a Type A DTC.
* The hybrid powertrain control module commands the battery energy control module to open the high voltage contactor relays.

Conditions for Clearing the DTC

DTC P16F4 is a Type A DTC.

Reference Information
Schematic Reference

Hybrid Controls Schematics Hybrid Controls Schematics
Connector End View Reference

Component Connector End Views Connector End Views By Name
Electrical Information Reference

* Circuit Testing 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 Programming and Relearningfor 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 P1824, P182A, P182B, P182C, P182D, P182E, P182F, P1838, or P1839 is not set.

• If any of the DTCs are set, refer to DTC P1824, P182A-P182F, P1838, or P1839 P1824.

3. Verify that DTC P16F4 is not set.

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

Repair Instructions

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

Control Module References Programming and Relearningfor Drive Motor Generator Power Inverter Module replacement, setup and programming.