Circuit Description

ECT ECU uses signal from direct clutch speed sensor and vehicle speed sensor to determine actual gear position. ECT ECU compares actual gear with shift schedule in memory to detect mechanical trouble of solenoids and/or valve body. DTC is set if during normal driving gear required by ECT ECU 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.