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Home >> Toyota >> 2016 >> Corolla S, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 38 (Continuously Variable Transaxle - Diagnostic Codes (3 Of 3) & Circuit Tests (Model Code: ZRE172)) >> Continuously Variable Transaxle System >> DTC P0722, P077C, P077D; Output Speed Sensor Circuit No Signal [08/2017 - ] >> Description

DTC P0722, P077C, P077D; Output Speed Sensor Circuit No Signal [08/2017 - ]: Description

WARNING: This page is about a different variant/trim than selected.

The ECM receives a signal from the revolution sensor (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
    • The vehicle is driven with the shift lever in D, the output shaft speed is 300 rpm or more, and no malfunctions are detected in the park/neutral position switch.
  2. Malfunction Status
    • The speed indicated by the transmission revolution sensor (NOUT) is less than 300 rpm.
  3. Malfunction Time
    • 2 seconds
  4. Other
    • 1-trip detection logic
  • Wire harness or connector
  • Transmission revolution sensor (NOUT)
  • ECM
 Comes on DTC stored
P077C Output Speed Sensor Circuit Low
  1. Diagnosis Condition
    • A transmission revolution sensor (NOUT) signal malfunction is not detected.
  2. Malfunction Status
    • The transmission revolution sensor (NOUT) output voltage is less than 0.2 V.
  3. Malfunction Time
    • 2 seconds
  4. Other
    • 1-trip detection logic
  • Wire harness or connector
  • Transmission revolution sensor (NOUT)
  • ECM
 Comes on DTC stored
P077D Output Speed Sensor Circuit High
  1. Diagnosis Condition
    • A transmission revolution sensor (NOUT) signal malfunction is not detected.
  2. Malfunction Status
    • The transmission revolution sensor (NOUT) output voltage is higher than 1.8 V.
  3. Malfunction Time
    • 2 seconds
  4. Other
    • 1-trip detection logic
  • Wire harness or connector
  • Transmission revolution sensor (NOUT)
  • ECM
 Comes on DTC stored
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