2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1577
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0716
- Input Speed Sensor Performance
DTC P0717
- Input Speed Sensor Circuit Low Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The input speed sensor (ISS) is a hall-effect type sensor. The ISS mounts to the inside of the automatic transmission case assembly and connects to
the control solenoid valve assembly through a 2-wire harness and connector. The sensor faces the reluctor wheel which is attached to the 4-5-6
clutch and 3-5-R clutch housing. The sensor receives 8.3-9.3 volts on the ISS supply voltage circuit from the transmission control module (TCM).
As the 4-5-6 clutch and 3-5-R clutch housing rotates, the sensor produces a signal frequency based on the teeth of the reluctor wheel. This signal is
transmitted through the ISS signal circuit to the TCM. The TCM uses the ISS signal to determine line pressure, transmission shift patterns, torque
converter clutch (TCC) slip speed, and gear ratio.
Conditions for Running the DTC
P0716
* No DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0752, P0973, or P0974.
* The engine speed is greater than 400 RPM for 5 seconds.
* The ignition voltage is greater than 8.6 volts.
* The engine torque signal is valid.
* The throttle position signal is valid.
P0717
* No DTC P0717.
* The engine speed is greater than 400 RPM for 5 seconds.
* The ignition voltage is greater than 8.6 volts.
* The vehicle speed is greater than 16 km/h (10 mph).
* The engine torque is greater than 50 Nm (37 lb ft).
* DTC P0717 has not passed this ignition cycle.
Conditions for Setting the DTC
P0716
Transmission input speed drops 1,350 RPM for greater than 1.0 second.
P0717
Transmission input shaft speed is less than 50 RPM for 5.0 seconds.
