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Home >> Lexus >> 2020 >> RC F Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission System - Diagnostic Codes (1 Of 3) >> Automatic Transmission System >> DTC P0717: Input Speed Sensor Circuit No Signal; DTC P07BF: Input/Turbine Speed Sensor "A" Circuit Low; DTC P07C0: Input/Turbine Speed Sensor "A" Circuit High [11/2017 - ] >> Description
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DTC P0717: Input Speed Sensor Circuit No Signal; DTC P07BF: Input/Turbine Speed Sensor "A" Circuit Low; DTC P07C0: Input/Turbine Speed Sensor "A" Circuit High [11/2017 - ]: Description

The transmission revolution sensor (NT) detects the input shaft rotation speed and sends it to the TCM.

Based on the transmission revolution sensor (NT) signal and the transmission revolution sensor (NC3 and SP2) signals, the TCM controls engine torque and shift timing. Based on the input shaft rotation speed and the engine speed signal, lock-up control is performed.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0717 Input Speed Sensor Circuit No Signal 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
  1. When shifting between 2nd and 8th gear, output wheel rotation speed is 1000 rpm or more, and +B voltage is 10 V or more.

    Park/neutral position switch assembly and transmission revolution sensor (NT) are normal.

  2. Transmission revolution sensor (NT) value is less than 300 rpm
  3. 5 seconds
  4. 1-trip detection logic
  • Transmission revolution sensor (NT)
  • Transmission wire
  • Harness and connector
  • TCM
Comes on DTC stored
P07BF Input/Turbine Speed Sensor "A" Circuit Low 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
  1. +B voltage is 10 V or more, and transmission revolution sensor (NT) signal malfunction is not detected
  2. Transmission revolution sensor (NT) input voltage is less than 0.2 V
  3. 4.5 seconds
  4. 1-trip detection logic
  • Transmission revolution sensor (NT)
  • Transmission wire
  • Harness and connector
  • TCM
Comes on DTC stored
P07C0 Input/Turbine Speed Sensor "A" Circuit High 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
  1. +B voltage is 10 V or more, and transmission revolution sensor (NT) signal malfunction is not detected
  2. Transmission revolution sensor (NT) input voltage is more than 1.8 V
  3. 4.5 seconds
  4. 1-trip detection logic
  • Transmission revolution sensor (NT)
  • Transmission wire
  • Harness and connector
  • TCM
Comes on DTC stored