Automatic Transmission - MVA 4 Speed
DTC P0717
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 Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0717
- Turbine Speed Sensor Circuit No Signal
Diagnostic Fault Information
Circuit/System Description
The transmission input shaft speed (ISS) sensor is a two wire sensor. The powertrain control module (PCM) supplies a voltage signal circuit and a low reference circuit to the ISS sensor. The PCM compares the ISS sensor signal to the transmission output shaft speed (OSS) sensor signal and appropriately controls the engine torque and transmission hydraulic pressure for shift timing.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
* Vehicle speed is greater than 50 km/h (31 mph).
* Park/neutral position switch (NSW, R, and L) is OFF.
* OSS sensor signal is less than 300 RPM.
Action Taken When the DTC Sets
DTC P0717 is a type A DTC.
Conditions for Clearing the DTC
DTC P0717 is a type A DTC.
Diagnostic Aids
The battery must be fully charged. Refer to Battery Inspection/Test (Battery Inspection/Test).
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
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
Powertrain Control Module Scan Tool Information (Scan Tool Testing and Procedures) for scan tool information.
Circuit/System Verification
1. Inspect the transmission fluid for the correct level.
2. Operate the vehicle at 80 km/h (50 mph) with a scan tool. Observe the transmission input speed RPM and the engine RPM signal. The transmission input speed RPM and the engine RPM signal parameters should indicate the same RPM.
3. 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.
Circuit/System Testing
1. Ignition OFF, disconnect the PCM harness connector X2.
2. Test for 560-680 ohm on the PCM harness connector X2 between terminals 124 and 125.
• If not within the specified value, test the ISS sensor signal circuits for an open/high resistance. If the circuits test normal, replace ISS sensor.
3. Test for greater than 10k ohm on the PCM harness connector X2 between terminal 124 and ground.
• If not within the specified value, test the low reference circuit for a short to ground. If the circuit tests normal, replace the ISS sensor.
4. Test for greater than 10k ohm on the PCM harness connector X2, between terminal 125 and ground.
• If not within the specified value, test the voltage reference circuit for a short to ground. If the circuit tests normal, replace the ISS sensor.
5. If all circuits test normal, replace the PCM.
Component Testing
1. Ignition OFF, disconnect the ISS sensor harness connector.
2. Test for 560-680 ohm between terminals 1 and 2 on the ISS sensor.
• If not within the specified value, replace the ISS sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the repair.
* Vehicle Speed Sensor Replacement (MVA 4 Speed - Automatic Transmission)
* Powertrain Control Module Replacement (Service and Repair)
* Powertrain Control Module Programming and Setup (Testing and Inspection)