P0717
U660F AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: P0715,P0717: Input / Turbine Speed Sensor Circuit Malfunction
DESCRIPTION
This sensor detects the rotation speed of the turbine which shows the input speed of the transaxle. By comparing the input speed signal (NT) with the output speed sensor signal (NC), the TCM detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure according to various conditions, thus, providing smooth gear shifts.
Text in Illustration
MONITOR DESCRIPTION
The NT terminal of the TCM detects a revolution signal from the input speed sensor (NT). The TCM calculates gear shifts comparing the input speed sensor (NT) with the output speed sensor (NC).
While the vehicle is operating in 2nd, 3rd, 4th, 5th or 6th gear with the shift lever in D, if the input shaft speed is less than 300 rpm*1 although the output shaft speed is more than 1000 rpm, the TCM will turn on the MIL and store the DTC.
*1: Pulse is not output or is irregularly output.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
P0715:
P0717:
TYPICAL MALFUNCTION THRESHOLDS
P0715:
P0717:
COMPONENT OPERATING RANGE
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
Perform the universal trip to clear permanent DTCs DTC Check / Clear.
HINT
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
1. Warm up the engine.
2. Turn the ignition switch off.
3. Connect the Techstream to the DLC3.
4. Turn the ignition switch to ON.
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / ECT / Data List / All Data.
7. According to the display on the Techstream, read the Data List.
ECT
HINT
* SPD (NT) is always 0 while driving: Open or short in the sensor or circuit.
* SPD (NT) is always more than 0 and less than 300 rpm while driving the vehicle at 50 km/h (31 mph) or more: Sensor trouble, improper installation, or intermittent connection trouble of the circuit.
PROCEDURE
1. INSPECT TRANSMISSION REVOLUTION SENSOR (SENSOR INSTALLATION)
(a) Remove the valve body assembly.
(b) Make sure that the connector is properly connected, and check the transmission revolution sensor installation.
OK:
The installation bolt is tightened properly and there is no clearance between the sensor and transmission valve body.
NG -- SECURELY INSTALL OR REPLACE TRANSMISSION REVOLUTION SENSOR Installation
OK -- Continue to next step.
2. INSPECT TRANSMISSION WIRE
(a) Remove the TCM.
(b) Disconnect the speed sensor connector from the transmission wire.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE TRANSMISSION WIRE Removal
OK -- Continue to next step.
3. REPLACE TRANSMISSION REVOLUTION SENSOR
(a) Replace transmission revolution sensor Removal.
NEXT -- Continue to next step.
4. CHECK DTC OUTPUT
(a) Connect the Techstream to the DLC3.
(b) Start the engine and turn the Techstream on.
(c) Enter the following menus: Powertrain / ECT / Trouble Codes / Clear.
HINT
Write down the currently output DTCs before clearing them.
(d) Perform the monitor drive pattern Monitors, Trips, Drive Cycles and Readiness Codes.
(e) Enter the following menus: Powertrain / ECT / Trouble Code.
(f) Read the DTCs using the Techstream.
Result
B -- REPLACE TCM Removal
A -- END