Circuit Description
WARNING: This page is about a different car, the 2002 Toyota Land Cruiser, 2002 Lexus LX 470, 2001 Toyota Land Cruiser, and 2001 Lexus LX 470. 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. See Fig 1. By comparing O/D direct clutch speed signal and No. 2 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 transmission shifting. DTC is set when gear change cannot be performed, gear position is 1st, 2nd, 3rd or 4th, output shaft speed is 1000 RPM or more, input shaft speed is 300 RPM or less and speed sensor, No. 1 and No. 2 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.
- Internal mechanical transmission malfunction.