Dtc P0720 Output Speed Sensor Circuit

Transmission. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
K111F Cvt. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (SPD (NOUT) AND NOUT SENSOR VOLTAGE)

INSPECT TRANSMISSION REVOLUTION SENSOR (NOUT)

CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NOUT) - ECM)

REPLACE ECM

PERFORM INITIALIZATION

REPLACE ECM

PERFORM INITIALIZATION

DTC P0720 Output Speed Sensor Circuit

DTC P0722 Output Speed Sensor Circuit No Signal


DESCRIPTION

The ECM receives a signal from the secondary pulley speed sensor (transmission revolution sensor (NOUT)) installed in the continuously variable transaxle and determines the output shaft speed in order to control the gear ratio.
The transmission revolution sensor (NOUT) detects the continuously variable transaxle output shaft speed and sends it to the ECM.

DTC Code
DTC Detection Condition
  1. Diagnosis Condition
  2. Malfunction Status
  3. Malfunction Time
  4. Other
Trouble Area
P0720
  1. A transmission revolution (NOUT) signal malfunction is not detected.
  2. The transmission revolution sensor (NOUT) output voltage is less than 0.1 V, or higher than 1.9 V.
  3. 2 seconds
  4. 1 trip detection logic
  1. Open or short in transmission revolution sensor (NOUT) circuit
  2. Transmission revolution sensor (NOUT)
  3. ECM
P0722
  1. The vehicle is driven with the shift lever in D, the output shaft speed is 300 rpm or more, and no error is detected in the park/neutral position switch.
  2. The speed indicated by the transmission revolution sensor (NOUT) is less than 300 rpm.
  3. 2 seconds
  4. 1 trip detection logic
  1. Open or short in transmission revolution sensor (NOUT) circuit
  2. Transmission revolution sensor (NOUT)
  3. ECM

MONITOR DESCRIPTION

The ECM receives a signal from the secondary pulley speed sensor (transmission revolution sensor (NOUT)) installed in the continuously variable transaxle and determines the output shaft speed in order to control the gear ratio.
If the ECM detects no signal from the secondary pulley speed sensor even while the vehicle is moving, it will conclude that there is a malfunction in the secondary pulley speed sensor. The ECM will illuminate the MIL and store the DTC.

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.K111F Cvt.Continuously Variable Transaxle System. Dtc P0720 Output Speed Sensor Circuit


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (SPD (NOUT) AND NOUT SENSOR VOLTAGE)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

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

  1. In accordance with the display on the tester, read the Data List.

    Engine and ECT
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    SPD (NOUT)
    		Secondary pulley speed (NOUT)/
    min.: 0 rpm
    max.: 12750 rpm
    1. Vehicle stopped: 0 rpm
    2. Vehicle cruising at approx. 60 km/h (37 mph): 2800 rpm
    		Data is displayed in increments of 50 rpm.
    NOUT Sensor Voltage
    		Secondary pulley speed (NOUT) sensor output voltage/
    min.: 0 V
    max.: 5 V
    		Engine idling: Approx. 2 V
    		-
    Result
    Result
    		Proceed to
    Data displayed is not as specified under Normal Condition
    		A
    Data displayed is as specified under Normal Condition
    		B


B
Go to step 6
A


2.INSPECT TRANSMISSION REVOLUTION SENSOR (NOUT)


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.K111F Cvt.Continuously Variable Transaxle System. Dtc P0720 Output Speed Sensor Circuit

  1. Remove the transmission revolution sensor (NOUT) (RAV4_ACA30 RM000000OE402CX.html).

  1. Connect the battery to the sensor as shown in the illustration.

  1. Wave a magnetic object left and right in front of the transmission revolution sensor tip (5 mm (0.197 in.) 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.

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

    Standard Current:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		Low signal
    		4 to 8 mA
    1 - 2
    		High signal
    		12 to 16 mA
    Text in Illustration
    *1
    		Component without harness connected
    (Transmission Revolution Sensor (NOUT))
    *2
    		Ammeter
    *3
    		Battery
    *4
    		5 mm (0.197 in.) Gap or Closer


NG
REPLACE TRANSMISSION REVOLUTION SENSOR (NOUT) (RAV4_ACA30 RM000000OE402CX.html)
OK


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


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.K111F Cvt.Continuously Variable Transaxle System. Dtc P0720 Output Speed Sensor Circuit

  1. Disconnect the transmission revolution sensor (NOUT) connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    B119-1 - B32-125 (NOTO)
    		Always
    		Below 1 Ω
    B119-2 - B32-101 (NOTB)
    		Always
    		Below 1 Ω
    B119-1 or B32-125 (NOTO) - Body ground
    		Always
    		10 kΩ or higher
    B119-2 or B32-101 (NOTB) - Body ground
    		Always
    		10 kΩ or higher
    Text in Illustration
    *1
    		Front view of wire harness connector
    (to Transmission Revolution Sensor (NOUT))
    *2
    		Front view of wire harness connector
    (to ECM)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.REPLACE ECM

  1. Replace the ECM (RAV4_ACA30 RM0000017UO01KX.html).


NEXT


5.PERFORM INITIALIZATION
NOTICE:
  1. Performing reset memory will clear the learned values of both the yaw rate sensor assembly*1 or deceleration sensor*2 (deceleration sensor 0 point calibration) and CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate sensor assembly*1 or deceleration sensor*2 0 point calibration and CVT oil pressure calibration when replacing any of the parts shown in the following table:
    Replaced Part
    1. Continuously variable transaxle assembly
    2. ECM
    3. Oil pressure sensor
    4. Yaw rate sensor assembly (w/ VSC)
    5. Deceleration sensor (w/o VSC)
    6. Brake actuator assembly (skid control ECU)
  2. After performing reset memory, always perform yaw rate sensor assembly*1 or deceleration sensor*2 (deceleration sensor 0 point) calibration first, and then CVT oil pressure calibration.
  3. Always perform 0 point calibration with the vehicle on level ground.
  4. Do not shake or vibrate the vehicle during 0 point calibration.

  1. Using the intelligent tester, perform reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration (RAV4_ACA30 RM000003UQR002X.html).

  1. Check that no DTC is stored.


NEXT

END

6.REPLACE ECM

  1. Replace the ECM (RAV4_ACA30 RM0000017UO01KX.html).


NEXT


7.PERFORM INITIALIZATION
NOTICE:
  1. Performing reset memory will clear the learned values of both the yaw rate sensor assembly*1 or deceleration sensor*2 (deceleration sensor 0 point calibration) and CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate sensor assembly*1 or deceleration sensor*2 0 point calibration and CVT oil pressure calibration when replacing any of the parts shown in the following table:
    Replaced Part
    1. Continuously variable transaxle assembly
    2. ECM
    3. Oil pressure sensor
    4. Yaw rate sensor assembly (w/ VSC)
    5. Deceleration sensor (w/o VSC)
    6. Brake actuator assembly (skid control ECU)
  2. After performing reset memory, always perform yaw rate sensor assembly*1 or deceleration sensor*2 (deceleration sensor 0 point) calibration first, and then CVT oil pressure calibration.
  3. Always perform 0 point calibration with the vehicle on level ground.
  4. Do not shake or vibrate the vehicle during 0 point calibration.

  1. Using the intelligent tester, perform reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration (RAV4_ACA30 RM000003UQR002X.html).

  1. Check that no DTC is stored.


NEXT

END