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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission (Ab60E) - Diagnostic Codes (2 Of 2) & Circuit Tests) >> Automatic Transmission System >> DTC P2757: Torque Converter Clutch Pressure Control Solenoid Performance (Shift Solenoid Valve SLU) [08/2015 - 08/2017] >> Description

DTC P2757: Torque Converter Clutch Pressure Control Solenoid Performance (Shift Solenoid Valve SLU) [08/2015 - 08/2017]: Description

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

The ECM uses the signals from the throttle position sensor, air-flow meter, turbine (input) speed sensor, output speed sensor and crankshaft position sensor to monitor the engagement condition of the lock-up clutch.

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Then the ECM compares the engagement condition of the lock-up clutch with the lock-up schedule in the ECM memory to detect mechanical problems of the shift solenoid valve SLU, valve body and torque converter assembly.

DTC Code DTC Detection Condition Trouble Area
P2757 Lock-up does not occur when driving in the lock-up range (normal driving at 80 km/h (50 mph)), or lock-up remains ON in the lock-up OFF range
(2 trip detection logic)
  • Shift solenoid valve SLU remains open or closed
  • Valve body is blocked
  • Shift solenoid valve SLU
  • Torque converter assembly
  • Automatic transmission (clutch, brake, gear, etc.)
  • Line pressure is too low