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Last Modified: 9-16-2014 6.6 C Doc ID: RM000000W8J0DXX Model Year: 2015 Model: Tundra Prod Date Range: [08/2014 - ] Title: A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: P0751; Shift Solenoid "A" Performance (Shift Solenoid Valve S1); 2015 MY Tundra [08/2014 - ] DTC P0751 Shift Solenoid "A" Performance (Shift Solenoid Valve S1) 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 P0751 S1 stuck ON malfunction*1: 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 1st gear, the actual gear is shifted to 2nd. (b) When the ECM directs the transmission to switch to 5th gear, the actual gear is shifted to 5th. Shift solenoid valve S1 remains closed Valve body is blocked Automatic transmission (clutch, brake, gear, etc.) P0751 S1 stuck OFF malfunction*2: The ECM determines there is a malfunction when conditions (a) and (b) are met (2-trip detection logic): (a) When the ECM directs the transmission to switch to 5th gear, the actual gear is shifted to 5th. (b) When the ECM directs the transmission to switch to 6th gear, the engine overruns (clutch slips). Shift solenoid valve S1 remains open Shift solenoid valve SLT remains open or closed Valve body is blocked No. 2 brake malfunction (driving is difficult) Automatic transmission (clutch, brake, gear, etc.) HINT: 1st 2nd 3rd 4th 5th 6th *1: Actual gear position under S1 stuck ON malfunction 2nd 2nd 3rd 4th 5th 6th *2: Actual gear position under S1 stuck OFF malfunction 1st 1st 3rd 4th 5th N* N*: Neutral Gear position during fail-safe operation: If any malfunction is detected, the ECM changes into the fail-safe mode to shift into the gear positions as shown in the table below. A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS... |