Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC P0706: Park/Neutral Position Switch CircuitDTC P0707: Park/Neutral Position Switch Circuit Low Voltage
DTC P0708: Park/Neutral Position Switch Circuit High Voltage
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Park/Neutral Signal | P0706, P0707 | P0706, P0708 | P0706, P0708 | -- |
Typical Scan Tool Data
Circuit | Short to Ground | Open/High Resistance | Short to Voltage |
|---|---|---|---|
Operating Conditions: Engine running, normal operating temperature Parameter Normal Range: 12 Volts = In-Gear, 0 Volts = Park/Neutral | |||
Park/Neutral Signal | Park/Neutral | In-Gear | In-Gear |
Circuit/System Description
Shift position switch function is installed as one part of transmission control module (TCM). The position switch consists of 2 switches, whose values are running in the opposite direction. automatic transmission shift range is calculated by TCM reading output voltage from gear lever position sensor installed in TCM itself.
Conditions for Running the DTC
| • | Ignition voltage is between 6-15.5 V. |
| • | TCM is not in service mode. |
Conditions for Setting the DTC
P0706
Sum of two position sensor voltage has deviation over 0.29 V from standard value 5 V.
P0707
Voltage on position switch 1 and position switch 2 is less than 0.127 V for 100 ms continuously after 2 consecutive times.
P0708
Voltage on position switch 1 and position switch 2 is more than 4.87 V for 100 ms continuously after 2 consecutive times.
Action Taken When the DTC Sets
| • | DTCs P0706, P0707, and P0708 are Type A DTCs. |
| • | The TCM freezes transmission adaptive functions. |
| • | If output speed sensor is 0 RPM, Range is D, 2nd gear is hold and service mode will be set. |
| • | The engine start is locked after engine has stopped. |
Conditions for Clearing the DTC
| • | DTCs P0706, P0707, and P0708 are Type A DTCs. |
| • | Voltage of two selector position sensor are within 0.127-4.87 V and sum of two position sensor voltage has deviation within 0.29 V from standard value 5 V. |
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics
Connector End View Reference
Description and Operation
Transmission Component and System Description
Electrical Information Reference
| • | Circuit Testing |
| • | Wiring Repairs |
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Special Tools
Control Module References for scan tool information
Circuit/System Verification
- If there are any other transmission DTCs set, diagnose those DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle.
- Ignition ON, observe the scan tool transmission range switch parameter while slowly moving the gear shift lever from Park and through all ranges. Verify the gear shift lever position matches the scan tool parameter.
- Ignition ON, observe the scan tool transmission range switch parameter while slowly moving the gear shift lever from Park and through all ranges. Verify the gear shift lever position matches the scan tool parameter.
- Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Note: It is especially important to closely observe the Park and Neutral to Drive transitional positions while moving the shift lever and observing for possible misalignment or slack in the shifter mechanism.
| ⇒ | If not within the specified value, refer to range selector lever cable adjustment Range Selector Lever Cable Adjustment and Transmission Adaptive Functions. |
| ⇒ | If not within the specified value, replace the K71 Transmission Control Module (TCM). |
| ⇒ | If the DTC resets, replace the K71 Transmission Control Module (TCM). |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control valve body, refer to Control Valve Body Replacement for replacement. |
| • | TCM, refer to Control Module References for replacement, setup and programming. |
