K313 CVT CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM P0717 Input/Turbine Speed Sensor "A" Circuit No Signal P07BF Input/Turbine Speed Sensor "A" Circuit Low P07C0 Input/Turbine Speed Sensor "A" Circuit High

DESCRIPTION

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

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

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0717	Input/Turbine Speed Sensor "A" Circuit No Signal	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other 1. The vehicle is driven with the shift lever in D, the output shaft speed is 300 rpm or more, and no malfunction is detected in the park/neutral position switch assembly. 2. The speed indicated by the transmission revolution sensor (NT) is less than 300 rpm. 3. 2 seconds 4. 1-trip detection logic	· Wire harness or connector · Continuously variable transaxle assembly (Transmission revolution sensor (NT)) · ECM	Comes on	DTC stored
P07BF	Input/Turbine Speed Sensor "A" Circuit Low	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other 1. A transmission revolution sensor (NT) signal malfunction is not detected. 2. The transmission revolution sensor (NT) output voltage is less than 0.2 V. 3. 2 seconds 4. 1-trip detection logic	· Wire harness or connector · Continuously variable transaxle assembly (Transmission revolution sensor (NT)) · ECM	Comes on	DTC stored
P07C0	Input/Turbine Speed Sensor "A" Circuit High	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other 1. A transmission revolution sensor (NT) signal malfunction is not detected. 2. The transmission revolution sensor (NT) output voltage is higher than 1.8 V. 3. 2 seconds 4. 1-trip detection logic	· Wire harness or connector · Continuously variable transaxle assembly (Transmission revolution sensor (NT)) · ECM	Comes on	DTC stored

MONITOR DESCRIPTION

The transmission revolution sensor (NT) detects the transaxle input shaft speed. The ECM determines the necessary gear ratio based on a comparison of the transmission revolution sensor (NT) (input shaft speed) with the transmission revolution sensor (NOUT) (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 driving with the shift lever in D, the ECM will determine that the transmission revolution sensor (NT) is malfunctioning. The ECM will then illuminate the MIL and store a DTC.

WIRING DIAGRAM

5.948,2.26 6.344,2.427 0.396,0.167 10 false ECM 0.208,1.865 3.031,2.083 2.823,0.219 10 false Transmission Revolution Sensor (NT) 5.958,2.104 6.385,2.271 0.427,0.167 10 false B64 5.365,0.344 5.646,0.51 0.281,0.167 10 false 126 5.365,1.563 5.677,1.74 0.313,0.177 10 false 125 5.708,0.458 6.01,0.615 0.302,0.156 10 false NTB 5.708,1.677 6.052,1.833 0.344,0.156 10 false NTO 3.292,0.333 3.594,0.49 0.302,0.156 10 false NTB 3.292,1.552 3.594,1.708 0.302,0.156 10 false NTO 3.677,0.333 3.802,0.5 0.125,0.167 10 false 2 3.677,1.552 3.802,1.719 0.125,0.167 10 false 8 0.104,2.208 0.563,2.375 0.458,0.167 10 false B18 0.104,2.365 4.083,2.542 3.979,0.177 10 false Continuously Variable Transaxle Assembly (Transmission Wire) 6.344,1.656 6.583,1.813 0.24,0.156 10 false E1 6.615,1.563 6.833,1.719 0.219,0.156 10 false 59

CAUTION / NOTICE / HINT

NOTICE:: ·

Perform initialization when parts related to the continuously variable transaxle are replaced.

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION

·

Check that no DTCs are stored after performing initialization.

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>DTC CHECK / CLEAR

PROCEDURE

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

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

Enter the following menus: Powertrain / Engine and ECT / Data List / Primary.

According to the display on the GTS, read the Data List.

Powertrain > Engine and ECT > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
SPD (NT)	Input turbine speed	min.: 0 rpm max.: 12750 rpm	· Equal to engine speed (NE): Lock-up ON (After warming up engine) · Nearly equal to engine speed (NE): Lock-up OFF (Engine idling with shift lever in P or N) · 0 rpm: Vehicle stopped with shift lever in R	Data is displayed in increments of 50 rpm.
NT Sensor Voltage	Input turbine speed (NT) sensor output voltage	min.: 0.000 V max.: 4.999 V	0.1 to 1.9 V: Engine idling (Vehicle stopped with shift lever in P or N)	-

Powertrain > Engine and ECT > Data List

Tester Display
SPD (NT)
NT Sensor Voltage

50003 234 390,391

Result:

Result	Proceed to
Data List values are not normal	A
Data List values are normal	B

2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

6.REPLACE ECM

2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

Disconnect the B18 transmission wire connector.

Disconnect the B64 ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
B18-8 (NTO) - B64-125 (NTO)	Always	Below 1 Ω
B18-2 (NTB) - B64-126 (NTB)	Always	Below 1 Ω
B64-59 (E1) - Body ground	Always	Below 1 Ω
B18-8 (NTO) or B64-125 (NTO) - Body ground and other terminals	Always	10 kΩ or higher
B18-2 (NTB) or B64-126 (NTB) - Body ground and other terminals	Always	10 kΩ or higher

Connect the B64 ECM connector.

Connect the B18 transmission wire connector.

Result:

Proceed to
OK
NG

3.CHECK ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

3.CHECK ECM

0.167,1.01 0.563,1.292 0.396,0.281 1.333,0.958 1.167,0.25 1.167,0.25 0.99,0.25 true 0.25,1.073 0.708,1.271 0.458,0.198 10 false B18 0.688,0.177 1.146,0.375 0.458,0.198 10 false NTB 0.104,0.094 0.417,0.292 0.313,0.198 10 false *a

*a	Front view of wire harness connector (to Transmission Wire)

Disconnect the B18 transmission wire connector.

Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
B18-2 (NTB) - Body ground	Ignition switch ON	11 to 14 V

Turn the ignition switch off.

Connect the B18 transmission wire connector.

1.5,0.281 1.917,0.531 0.417,0.25 1.927,1.76 1.719,1.76 1.719,1.76 1.604,1.302 true 0.677,1.802 0.479,1.802 0.479,1.802 0.292,1.083 true 0.094,0.073 0.406,0.271 0.313,0.198 10 false *a 1.958,1.688 2.698,1.875 0.74,0.188 10 false 125 (NTO) 0.719,1.729 1.271,1.917 0.552,0.188 10 false 59 (E1) 1.583,0.313 2.198,0.51 0.615,0.198 10 false B64

*a	Component without harness connected (ECM)

Disconnect the B64 ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
B64-125 (NTO) - B64-59 (E1)	Always	99 to 101 Ω

Result:

Proceed to
OK
NG

4.REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

5.REPLACE ECM

4.REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

Replace the continuously variable transaxle assembly.

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY>COMPONENTS

Result:

Proceed to
NEXT

PERFORM INITIALIZATION

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION

5.REPLACE ECM

Replace the ECM.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>ECM>COMPONENTS

Result:

Proceed to
NEXT

PERFORM INITIALIZATION

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION

6.REPLACE ECM

Replace the ECM.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>ECM>COMPONENTS

Result:

Proceed to
NEXT

PERFORM INITIALIZATION

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION