P0717

K41B CVT: CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P0715, P0717: Input/Turbine Speed Sensor "A" Circuit
P0717 - Input/Turbine Speed Sensor "A" Circuit No Signal

DESCRIPTION

The ECM receives a signal from the turbine speed sensor (transmission revolution sensor (NT)) installed in the continuously variable transaxle to control the lock up engagement pressure and forward clutch pressure.

The transmission revolution sensor (NT) detects the continuously variable transaxle input shaft speed and sends it to the ECM.





MONITOR DESCRIPTION

The turbine speed sensor detects the transaxle input shaft speed. The ECM determines the gear shift timing based on a comparison of the turbine speed sensor (input shaft speed) with the output speed sensor (output shaft speed).

When the output shaft speed is higher than the expected value and the input shaft speed is less than 300 rpm while running with the shift lever in the D position, the ECM will conclude that there is malfunction of the transmission revolution sensor (NT). The ECM will illuminate the MIL and store the DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All





P0715:





P0717:

All of the following conditions are met:





TYPICAL MALFUNCTION THRESHOLDS

P0715:





P0717:





COMPONENT OPERATING RANGE

P0715:





P0717:





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Perform the universal trip to clear permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

PROCEDURE

1. READ VALUE USING TECHSTREAM (SPD (NT) AND NT SENSOR VOLTAGE)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Data List.

(e) In accordance with the display on the Techstream, read the Data List.





Result





B -- REPLACE ECM
A -- Continue to next step.

2. INSPECT TRANSMISSION REVOLUTION SENSOR (NT)

(a) Remove the transmission revolution sensor (NT) Removal and then connect the battery.

(b) Wave a magnetic object left and right in front of the transmission revolution sensor tip (5 mm gap or closer) to change the high/low signals while measuring the current.





NOTICE:
Make sure to wave the magnetic object during the inspection. Current will not change without waving the magnetic object as indicated by the arrow in the illustration.

(c) Measure the current according to the value(s) in the table below.

Standard Current:





Text in Illustration





NG -- REPLACE TRANSMISSION REVOLUTION SENSOR (NT) Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NT) - ECM)

(a) Disconnect the ECM connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. REPLACE ECM P0705

NEXT -- Continue to next step.

5. PERFORM INITIALIZATION P0705

NEXT -- END