DTC Code | DTC Name |
---|---|
P0720 | Output Speed Sensor Circuit |
P0722 | Output Speed Sensor Circuit No Signal |
DESCRIPTION
The ECM receives a signal from the transmission revolution sensor (NOUT) installed to the continuously variable transaxle and determines the output shaft (secondary pulley) speed in order to control the gear ratio.
The transmission revolution sensor (NOUT) detects the continuously variable transaxle output shaft (secondary pulley) speed and sends a signal to the ECM.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
---|---|---|---|---|---|
P0720 | Output Speed Sensor Circuit | 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
|
|
Comes on | DTC stored |
P0722 | Output Speed Sensor Circuit No Signal | 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
|
|
Comes on | DTC stored |
MONITOR DESCRIPTION
The ECM receives a signal from the transmission revolution sensor (NOUT) installed to the continuously variable transaxle and determines the output shaft (secondary pulley) speed in order to control the gear ratio.
If the ECM detects no signal from the transmission revolution sensor (NOUT) even while the vehicle is moving, it will determine that in the transmission revolution sensor (NOUT) is malfunctioning, illuminate the MIL and store a DTC.
WIRING DIAGRAM
*a | Transmission Revolution Sensor (NOUT) |
CAUTION / NOTICE / HINT
Note
Perform initialization after replacing any parts related to the continuously variable transaxle system.
Check that no DTCs are stored after performing initialization.
Tech Tips
After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.
Drive the vehicle for 2 seconds or more at 7 km/h (4 mph) or more with the shift lever in D.
Check for DTCs again.
PROCEDURE
READ VALUE USING GTS (SPD (NOUT) AND NOUT SENSOR VOLTAGE)
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List.
According to the display on the GTS, read the Data List.
Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
SPD (NOUT) | Secondary pulley speed (NOUT) | min.: 0 rpm max.: 12750 rpm |
|
Data is displayed in increments of 50 rpm. |
NOUT Sensor Voltage | Transmission revolution sensor (NOUT) 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) | - |
Tester Display |
---|
SPD (NOUT) |
NOUT Sensor Voltage |
Result | ||||||
---|---|---|---|---|---|---|
|
B |
REPLACE ECM Click here |
A |
INSPECT TRANSMISSION REVOLUTION SENSOR (NOUT)
Remove the transmission revolution sensor (NOUT).
Connect the battery to the transmission revolution sensor (NOUT) as shown in the illustration.
*1 | Battery | *2 | Ammeter |
*a | Component without harness connected (Transmission Revolution Sensor (NOUT)) |
*b | Magnet |
*c | 5 mm or less | - | - |
Wave a magnetic object left and right 5 mm (0.197 in.) or less from the tip of the transmission revolution sensor (NOUT) to output a high/low signal while measuring the current.
Note
Make sure to wave the magnetic object during the inspection. The current will not change unless the magnetic object is moved as shown in the illustration.
Measure the current according to the value(s) in the table below.
Standard Current | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPLACE TRANSMISSION REVOLUTION SENSOR (NOUT) Click here |
OK |
CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NOUT) - ECM)
Disconnect the D27 transmission revolution sensor (NOUT) connector.
Disconnect the D1 ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Connect the D1 ECM connector.
Connect the D27 transmission revolution sensor (NOUT) connector.
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NOUT) - ECM) |
OK |
REPLACE ECM
Replace the ECM.
Result | ||
---|---|---|
|
NEXT |
PERFORM INITIALIZATION Click here |
REPLACE ECM
Replace the ECM.
Result | ||
---|---|---|
|
NEXT |
PERFORM INITIALIZATION Click here |