| DTC Code | DTC Name |
|---|---|
| P0722 | Output Speed Sensor Circuit No Signal |
| P077C | Output Speed Sensor Circuit Low |
| P077D | Output Speed Sensor Circuit High |
DESCRIPTION
The ECM receives a signal from the transmission revolution sensor (NOUT) installed in 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 |
|---|---|---|---|---|---|
| P0722 | Output Speed Sensor Circuit No Signal | 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
|
|
Comes on | DTC stored |
| P077C | Output Speed Sensor Circuit Low | 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
|
|
Comes on | DTC stored |
| P077D | Output Speed Sensor Circuit High | 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 in 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 the transmission revolution sensor (NOUT) is malfunctioning. The ECM will illuminate the MIL and store a DTC.
CAUTION / NOTICE / HINT
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Perform initialization when parts related to the continuously variable transaxle are replaced.
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Check that no DTCs are stored after performing initialization.
PROCEDURE
- Click here
READ VALUE USING GTS (SPD (NOUT) AND NOUT SENSOR VOLTAGE)
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Connect the GTS to the DLC3.
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Turn the ignition switch to ON.
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Turn the GTS on.
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Enter the following menus: Powertrain / Engine and ECT / Data List / Primary.
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In accordance with 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 (NOUT) Secondary pulley speed (NOUT) Min.: 0 rpm
Max.: 12750 rpm
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0 rpm: Vehicle stopped
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Approximately 2600 rpm: Vehicle cruising at approximately 60 km/h (37 mph)
Data is displayed in increments of 50 rpm. NOUT Sensor Voltage Secondary pulley speed (NOUT) 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) - -
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- Powertrain > Engine and ECT > Data List
Tester Display SPD (NOUT) NOUT Sensor Voltage -
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Result Result Proceed to Data display is not within Normal Condition range A Data display is within Normal Condition range B - Powertrain > Engine and ECT > Data List
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- Click here
INSPECT TRANSMISSION REVOLUTION SENSOR (NOUT)
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Remove the transmission revolution sensor (NOUT).
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*1 Battery *2 Ammeter *a Component without harness connected
(Transmission Revolution Sensor (NOUT))
*b Magnet *c 5 mm or less - - Connect the battery to the sensor as shown in the illustration.
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Wave a magnetic object left and right in front of the transmission revolution sensor (NOUT) tip (5 mm (0.197 in.) or less) to change the high/low signals while measuring the current.
Note:Make sure to wave the magnetic object during the inspection. The current will not change without waving the magnetic object as indicated by the arrow in the illustration.
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Measure the current according to the value(s) in the table below.
Standard Current Tester Connection Condition Specified Condition 1 (NOTO) - 2 (NOTB) Low signal 4 to 8 mA 1 (NOTO) - 2 (NOTB) High signal 12 to 16 mA Result Proceed to OK NG
- OKClick here
- NG
REPLACE TRANSMISSION REVOLUTION SENSOR (NOUT)Click here
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- Click here
CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NOUT) - ECM)
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Disconnect the B31 transmission revolution sensor (NOUT) connector.
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Disconnect the B93 ECM connector.
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Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition B31-1 (NOTO) - B93-127 (NOTO) Always Below 1 Ω B31-2 (NOTB) - B93-128 (NOTB) Always Below 1 Ω B31-1 (NOTO) or B93-127 (NOTO) - Body ground and other terminals Always 10 kΩ or higher B31-2 (NOTB) or B93-128 (NOTB) - Body ground and other terminals Always 10 kΩ or higher Result Proceed to OK NG
- OKClick here
- NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NOUT) - ECM)
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- Click here
REPLACE ECM
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Replace the ECM.
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for 3ZR-FAE:
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for 3ZR-FE:
Result Proceed to NEXT -
- NEXT
PERFORM INITIALIZATIONClick here
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- Click here
REPLACE ECM
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Replace the ECM.
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for 3ZR-FAE:
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for 3ZR-FE:
Result Proceed to NEXT -
- NEXT
PERFORM INITIALIZATIONClick here
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