P0715
DTC P0715
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 P0715
- Input Speed Sensor Circuit
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The input shaft speed sensor (ISS) is a hall-effect type sensor. The ISS detects revolutions of the intermediate shaft's C2 drum. As the C2 drum rotates, the sensor produces a signal frequency based on the machined surface of the C2 drum. This signal is transmitted to the Transmission Control Module (TCM). The TCM uses the ISS signal in connection with the output speed sensor signal to control engine torque, shift timing, and lock-up.
Conditions for Running the DTC
P0715
* The ignition voltage is 10.2-15.5 V.
* The engine speed is greater than 400 RPM for 2 s.
* The transmission is not in emergency mode.
* TCM communication is normal.
Conditions for Setting the DTC
Voltage signal is less than 0.2 V or more than 2.7 V for 100 ms over 10 times.
Action Taken When the DTC Sets
* DTC P0715 is a Type A DTC.
* The TCM freezes transmission adaptive functions.
* The TCM turns OFF all solenoids.
* The TCM allows the vehicle after a stop to operate only in the second gear and "R" range.
Conditions for Clearing the DTC
* DTC P0715 is a Type A DTC.
* Output speed is greater than 300 RPM for more than 70 s.
Diagnostic Aids
Damage or misalignment of the C2 drum machined teeth surface may cause a speed sensor malfunction.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (AF40-6 - Automatic Transmission)
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)
Description and Operation
Transmission Component and System Description (Transmission Component and System Description)
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 Relearning) for scan tool information
Circuit/System Verification
1. Engine idling, observe the scan tool Transmission ISS parameter while varying the engine speed. The Transmission ISS parameter should change with the engine speed and not drop out.
2. 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 you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
Static Test
1. Ignition OFF, remove the K71 Transmission Control Module.
2. Test for more than 1 Mohm between the low reference circuit terminal 13 X2 and the voltage supply circuit terminal 12 X2.
• If less than the specified range, test the wiring harness for internal short. If the circuit tests normal, replace the automatic transmission.
3. Test for infinite resistance between each terminal and the low reference circuit terminal 13 X2 and also to the voltage supply circuit terminal 12 X2.
• If less than the specified range, replace the wiring harness.
4. If all circuits test normal, test or replace the K71 Transmission Control Module. Verify the DTC does not reset.
• If the DTC resets, replace the automatic transmission.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Automatic transmission replacement-Refer to Transmission Replacement (AF40-6 - Automatic Transmission).
* Control valve body-Refer to Control Valve Body Replacement (Control Valve Body Replacement) for replacement.
* Wiring harness-Refer to Automatic Transmission Wiring Harness Replacement (Service and Repair) for replacement.
* TCM-Refer to Control Module References (Programming and Relearning) for replacement, setup and programming.
* Perform the Transmission Adaptive Functions (Transmission Adaptive Functions).