![]() ![]() Start at number 1 connector and continue counting the connectors in the same order as you would read a book. Number 9 is on the left lower corner, number 16 on the lower right corner. Number 1 is the top left corner, with number 8 on the top right corner. There are 16 pins on the white OBD connector (8 top and 8 bottom). Jump the #4 and #13 pins on the On Board Diagnostics (OBD) white connector located near the drivers kick panel with a short piece of wire and start the engine (if not already started). You may leave the truck idling, or shut off the engine before the next step – your choice. When the ATF temperature surpasses 56☌ (130☏), the AT TEMP light will begin to flash indicating the system is too hot for verification. After a series of shifts to enter the check mode, the AT TEMP light will illuminate when the ATF temperature is within the 46☌ (115☏) and 56☌ (130☏) range required to accurately check the fluid level. To describe the Temp Check Mode briefly, there is a light (AT TEMP) located within the the tachometer circle. With the AT fluid circulated, it is now time to set the truck in "Temperature Check Mode" to verify the correct level. While the truck idles, move the shift lever through ALL of the gear positions to circulate the fluid. Upon pumping the required amount into the AT with the bottle pump (or funnel and hose), replace the fill plug and start the engine. It is important to overfill the AT slightly as you will want excess fluid to spill when you remove the overflow plug later in the procedure. Replace the drain plug (and overflow plug if removed) and proceed to fill the AT with approximately 1/3 quart more than what drained out. I had purchased 5 liters from the dealer just in case as I was unsure of the required volume. You may want to gather the "used" ATF so you can measure exactly what had been drained – in my case it turned out to be 2.9 liters (3.0 quarts). Place your drain pan underneath the transmission fluid pan and remove the 14mm drain plug. If you should remove the overflow plug now, have a pan ready as fluid will spill. Loosen the overflow plug (5mm hex) located on the bottom of the AT fluid pan to ensure its ability to be removed when required. No matter what service you perform, always remove the fill plug first! If you drain the fluid first and later can’t get the fill plug removed – a tow to the dealer is inevitable. If the fill plug cannot be removed for some unknown reason or the head becomes stripped – the vehicle is still mobile as you haven’t YET drained the fluid. It is important to first ensure that you can remove the fill plug. Remove the fill plug (24mm) which is located on the passenger side of the automatic transmission (AT). New Crush washers from dealer (not necessary but not a bad idea)īottle pump and hose or funnel and hose (both available at Wal Mart for few $$$) Small piece of copper wire (used to jump the OBD connector) Since most of us have no access to the Toyota tool, we must utilize method “B” and use the trucks onboard diagnostic system (OBD).Ĥ-5 quarts of Toyota ATF WS (WS certification is the only compatible fluid). Toyota techs utilize the Toyota computerized scan tool to accurately verify the ATF temperature. The fluid temperature MUST BE between 46☌ (115☏) and 56☌ (130☏) to accurately check the fluid level. ![]() Since this transmission has no dipstick to check fluid level, the correct level must be confirmed by an overflow plug on the bottom of the pan. The drain and fill procedure on the Toyota 5 speed AT (mated to the 4.0L V6) is different than that of traditional transmissions. I strongly recommend anyone who tries this should consult the Toyota Factory Service Manual for further clarification, and become competent in getting the truck to enter the temp check mode before attempting any drain/fill, but honestly it is only a little more involved than a typical oil change for anyone with moderate mechanical ability. The following will serve as an official "How To" and hopefully aid some individuals who need such information.ĭIY'er beware however, as I take no responsibility if you should screw this up, costing you a tow to the dealer (or worse). I've gotten allot of PM's over the past number of weeks by individuals who mistakenly drained the AT looking for help to repair their misfortune. This guide can also be useful for those who have mistakenly drained the AT pan instead of the base pan when performing an oil change. I know allot of people are interested in saving a few bucks on this service (drain and fill), but are apprehensive about performing it themselves.
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