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Home >> Subaru >> 2016 >> BRZ Premium >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission (Diagnostics)) >> Automatic Transmission System >> DTC P0722 Output Speed Sensor Circuit No Signal >> Circuit description

Circuit description

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The transmission revolution sensor (SP2) inputs the output shaft revolution speed to the transmission control computer ASSY as a signal.

The transmission control computer ASSY performs shift timing control based on transmission revolution sensor (SP2) signal and transmission revolution sensor (NT) signal.

DTC DETECTION CONDITION

DTC No. SAE/TCCS DTC detecting condition
  1. Diagnosis condition
  2. Abnormal condition
  3. Abnormal period
  4. Other
Inspection parts
P0722
  1. Transmission 3 way solenoid ASSY (S1, S2, S3, S4, SR), transmission revolution sensor (NT), shift position sensor, clutch control solenoid No. 1 (SL1, SL2), and line pressure control solenoid ASSY (SLT) are normal.

    Driving at 6 km/h {4 MPH} or more in D position 1st gear, 9 km/h {6 MPH} or more in 2nd gear, 13 km/h {9 MPH} or more in 3rd gear, 18 km/h {12 MPH} or more in 4th gear, 25 km/h {16 MPH} or more in 5th gear, 30 km/h {19 MPH} or more in 6th gear (2.5 seconds or more passed after shifting to D position. However, when the oil temperature sensor is faulty and the oil temperature is 20°C or lower, 10 seconds or more passed after shifting to D position).

  2. When the transmission revolution sensor (NT) outputs 12 pulses, the transmission revolution sensor (SP2) does not detect even 1 pulse.
  3. Detected 500 times consecutively
  4. 1 trips
  • Transmission revolution sensor (SP2)
  • Wiring harness or connector
  • Transmission control computer ASSY