Circuit Description
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sequoia, 2002 Toyota 4Runner, and 2001 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
O/D direct clutch speed sensor, located at left front side of transmission near torque converter housing, detects O/D input shaft RPM from rotation of O/D direct clutch drum. By comparing O/D direct clutch speed sensor signal and vehicle speed sensor signal, ECM detects shift timing of gears and controls engine torque and hydraulic pressure in response to various conditions. This assists in smooth shifting. DTC is set when gear change cannot be performed, gear position is 1st , 2nd or 3rd, output shaft speed is 1000 RPM or more, input shaft speed is 300 RPM or less, speed sensor operation is normal, and No. 1, No. 2 and SL solenoid operation is normal. All conditions must be set for 5 seconds or more. Possible causes are:
- Open or short in O/D direct clutch speed sensor circuit.
- O/D direct clutch speed sensor malfunction.
- ECM malfunction.