IIRC the hose to disconnect is marked with yellow paint thou, red one is the line with 'hot' ATF coming out from transmission and going into ATF cooler, yellow - the reverse flow from cooler into transmission.
If red one is disconnected then there may be some fluid coming out from the line during fill process, there should be no fluid coming out if only yellow one disconnected.
Red one can be used to evacuate ATF when doing full ATF replacement, just stop engine after collecting about a quart and then add same volume, repeat.
If red one is disconnected then there may be some fluid coming out from the line during fill process, there should be no fluid coming out if only yellow one disconnected.
Red one can be used to evacuate ATF when doing full ATF replacement, just stop engine after collecting about a quart and then add same volume, repeat.