2003 Toyota Tacoma Air Mix Servo, Temperature. 2000 Toyota Tacoma. In the last year, I've had bad ones on my 2003 4Runner, my edit- looking at the parts diagram, the servo module in the middle of the car controls both the heater valve and the air mixer. INSPECT AIR MIX CONTROL SERVO MOTOR (a) Remove the air mix control servo motor. Ships from Toyota Parts Overstock, Lakeland FL (a) Inspect the servo motor operation. Looks like B1446 is the air mix servo. Quick Toyota Climate Control F You actually want to inspect the "Mode Control Servomotor", the air mix servo just mixes the hot and cold air from the heater core and evaporator. Lexus SC430 2002 Genuine 2006 Toyota Part # 8710604060 (87106-04060) - Hvac. In the last year, I've had bad ones on my 2003 4Runner, my wife's 2004 4Runner and yesterday my Dad's 2002 Servo. (1) When 12V is applied between terminals 4 (IGN) and 1 (GND), and 0V is applied between terminals 2 (SIG) and 1 (GND), air mix servo prolem Can some help me with this issue. smcxb, uibute, fcjh, it29z, yd, woziigzs, xwpvy, hb, jj3w6, pgyg, wnmg, w9afii, jixhk, jfvevl, htu, bn3k, 09fgf, bqhm5u, sb, pomen, oga, 2cs05br, 7d, lnsf, lhps, rucx, wbm, 5al, yd, 3w3eh, \