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Home >> Toyota >> 2009 >> Corolla S, 1.8 L, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission - U250E) >> Automatic Transaxle System >> DTC P0796 Pressure Control Solenoid "C" Performance (Shift Solenoid Valve SL3) >> System Description

System Description

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The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear).

Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical troubles of the shift solenoid valves and valve body.

DTC DETECTING CONDITION REFERENCE

DTC No. DTC Detecting Condition Trouble Area
P0796 The gear required by the ECM does not match the actual gear when driving (2-trip detection logic)
  • Shift solenoid valve SL3 remains open or closed
  • Valve body is blocked
  • Automatic transaxle (clutch, brake or gear etc.)