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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 235 (Automatic Transaxle System (K120) - Diagnostic Codes (2 Of 5)) >> K120 Continuously Variable Transaxle System >> DTC P0745-7F: Pressure Control Solenoid "A" Actuator Stuck Off [06/2018 - 01/2019] >> Description

DTC P0745-7F: Pressure Control Solenoid "A" Actuator Stuck Off [06/2018 - 01/2019]: Description

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

Using the current from the TCM, the shift solenoid valve SL1 controls the C1 clutch pressure in accordance with the requested shift mode.

When the TCM requests the shift mode to be changed to gear mode, the C1 clutch is engaged and the input torque is transmitted to the 1st gear via the forward clutch drum.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P0745-7F Pressure Control Solenoid "A" Actuator Stuck Off Any of the following conditions are met (2-trip detection logic):
  • When the TCM commands the C1 clutch to be engaged, the difference between the signals from the transmission revolution sensor (NT) and (NC1) is more than 200 rpm for 1 second or more.
  • The time between when the TCM commands the C1 clutch to be engaged and when the C1 clutch is actually engaged is less than 0.2 seconds.
  • Transmission valve body assembly (shift solenoid valve SL1)
  • Continuously variable transaxle assembly
Comes on DTC stored SAE Code:
P0746
DTC DETECTION CONDITION PATTERNS:

  Vehicle Condition
Pattern 1 Pattern 2
Diagnostic Condition TCM commands the C1 clutch to be engaged
Malfunction Condition Difference between the signals from the transmission revolution sensor (NT) and (NC1) is more than 200 rpm -
The time between when the TCM commands the C1 clutch to be engaged and when the C1 clutch is actually engaged is less than 0.2 seconds -
Duration 1 second or more -
Detection Logic 2-trip detection logic 2-trip detection logic

HINT: 

This DTC is stored when any of the above detection patterns is met.