2010 Cadillac Truck SRX FWD V6-3.0L Page 1686
- Input Speed Sensor Circuit No Signal
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The input shaft sensor is a hall-effect type sensor. The input shaft sensor detects revolutions of the intermediate shaft 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 input shaft sensor signal in connection with the output speed sensor signal to control engine torque, shift timing,
and lock-up.
Conditions for Running the DTC
P0717
* 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.
* Driving in D range.
* Current gear 2nd or higher.
* TCM communication is normal.
* Output speed multiplied with current gear ratio is more than 600 RPM.
Conditions for Setting the DTC
P0717
* No input shaft sensor pulse while receiving pulses on the output speed sensor.
* Deviation from calculated output speed is more than 300 RPM.
* No input shaft sensor pulse when vehicle speed from ABS is more than 20 km/h (13 MPH) for 300 ms.
Action Taken When the DTC Sets
* DTC P0717 is 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 P0717 is Type A DTC.
* Output speed is greater than 300 RPM for more than 70 s.
* Deviation from calculated output speed is less than 5% for more than 1 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 (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams/Electrical
Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
