Circuit Description
WARNING: This page is about a different car, the 2002 Toyota ECHO, 2002 Toyota Celica, 2001 Toyota ECHO, and 2001 Toyota Celica. However, it is still accessible from the selected car via links, so may be relevant.
Shift solenoid SL is turned on and off by signals from ECM to control hydraulic pressure acting on lock-up relay valve, which controls torque converter clutch lock-up. DTC will set if ECM detects an open or short circuit when solenoid resistance is 8 ohms or less with solenoid energized, or 100 k/ohms or more with solenoid not energized. If ECM detects a malfunction, shift solenoid SL is turned off. Possible causes:
- Open or short in shift solenoid SL circuit.
- Shift solenoid SL malfunction.
- ECM malfunction.