ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT SHIFT LEVER POSITION (a) When moving the shift lever from P to R with the ignition switch ON and the brake pedal depressed, make sure that it moves smoothly and correctly into position. (b) Start the engine and make sure that the vehicle moves forward after moving the shift lever from N to D and moves in reverse after moving the shift lever to R. If the operation cannot be performed as specified, inspect the park/neutral position switch assembly and check the shift lever assembly installation condition. |
Toyota Tundra Service Manual > Automatic Transmission System: Shift Solenoid "A" Performance (Shift Solenoid Valve S1) (P0751)
DESCRIPTION The ECM uses signals from the output shaft speed sensor and input speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th, 5th or 6th gear). Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical problems of the shift solenoid val ...
