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Last Modified: 9-16-2014 6.6 C Doc ID: RM000000W820BYX Model Year: 2015 Model: Tundra Prod Date Range: [08/2014 - ] Title: A760F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: P0766,P0776; Shift Solenoid "D" Performance (Shift Solenoid Valve S4); 2015 MY Tundra [08/2014 - ] DTC P0766 Shift Solenoid "D" Performance (Shift Solenoid Valve S4) DTC P0776 Pressure Control Solenoid "B" Performance (Shift Solenoid Valve SL2) 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 CODE DTC DETECTION CONDITION TROUBLE AREA P0766 S4 stuck OFF malfunction or brake control valve malfunction*: Shifting to 5th and 6th gears is impossible. The ECM determines there is a malfunction when the following conditions are both met (2-trip detection logic): (a) When the ECM directs the transmission to switch to 5th gear, the actual gear is shifted to 4th. (b) When the ECM directs the transmission to switch to 6th gear, the actual gear is shifted to 4th. Shift solenoid valve S4 remains closed Shift solenoid valve SLT remains open or closed Valve body is blocked (brake control valve) Automatic transmission (clutch, brake, gear, etc.) P0776 SL2 stuck ON malfunction or brake control valve malfunction*: Shifting to 5th and 6th gears is impossible. The ECM determines there is a malfunction when the following conditions are both met (2-trip detection logic): (a) When the ECM directs the transmission to switch to 5th gear, the actual gear is shifted to 4th. (b) When the ECM directs the transmission to switch to 6th gear, the actual gear is shifted to 4th. Shift solenoid valve SL2 remains closed Shift solenoid valve SLT remains open or closed Valve body is blocked (brake control valve) Automatic transmission (clutch, brake, gear, etc.) HINT: 1st 2nd 3rd 4th 5th 6th A760F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISS... |