Circuit Description
WARNING: This page is about a different car, the 2003 Toyota RAV4, 2002 Toyota RAV4, 2002 Toyota Highlander, 2001 Toyota RAV4, and 2001 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
Automatic Transmission Fluid ATF temperature sensor converts fluid temperature into a resistance value which is input to ECM. DTC is set when ATF temperature sensor resistance is less than 79 ohms, or if after engine has been operating for 15 minutes or more and ATF temperature sensor resistance is more than 156 k/ohms. Either condition must exist for .5 second or more. Possible causes are:
- Open or short in ATF temperature sensor circuit.
- ATF temperature sensor malfunction.
- ECM malfunction.