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.
ECM uses signal from No. 1 vehicle speed sensor to determine actual gear position. ECM compares actual gear with shift schedule in memory to detect mechanical trouble of solenoids and/or valve body. DTCs is set if during normal driving, gear required by ECM does not match actual gear after 2 trips have been completed. Possible causes are:
- No. 1 and/or No. 2 solenoid is stuck open or closed.
- Valve body is clogged or valve(s) is stuck.