Tacoma 4WD L4-2.7L (3RZ-FE) (2004)
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Air Door Actuator / Motor: Testing and Inspection
Air Mix Servomotor
AIR MIX SERVOMOTOR
INSPECTION
1. REMOVE AIR MIX SERVOMOTOR
a. Disconnect the servomotor connector.
b. Remove the 3 screws and servomotor.
2. INSPECT AIR MIX SERVOMOTOR
a. Inspect servomotor operation.
1. Connect the positive (+) lead from the battery to terminal 5 and negative (-) lead to terminal 4, then check that the arm turns to "COOL"
side smoothly.
2. Connect the positive (+) lead from the battery to terminal 4 and negative (-) lead to terminal 5, then check that the arm turns to "WARM"
side smoothly.
If operations are not as specified, replace the servomotor.
b. Inspect position sensor resistance.