Blower Motor: Testing and Inspection

AIR CONDITIONING: BLOWER UNIT:

INSPECTION

1. INSPECT BLOWER RESISTOR

HINT: The blower resistor can be removed following the removal and disassembly procedure for the blower assembly (Disassembly) and (Removal)).





(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:





If the resistance is not as specified, replace the blower resistor.
2. INSPECT AIR INLET CONTROL SERVOMOTOR (RECIRCULATION DAMPER SERVO SUB-ASSEMBLY)

HINT: The air inlet control servomotor (recirculation damper servo sub-assembly) can be removed following the removal procedure for the blower assembly (Removal).

(a) Inspect servomotor operation.





(1) Connect the positive (+) lead from the battery to terminal 5 and negative (-) lead to terminal 1, then check that the arm turns to the "REC" side smoothly.
(2) Connect the positive (+) lead from the battery to terminal 5 and negative (-) lead to terminal 2, then check that the arm turns to the "FRS" side smoothly.
If operations are not as specified, replace the servomotor.
3. INSPECT BLOWER W/FAN MOTOR SUB-ASSEMBLY

HINT: The blower w/fan motor sub-assembly can be removed following the removal and disassembly procedure for the blower assembly.

(Disassembly) and (Removal)).





(a) Connect the positive (+) lead from the battery to terminal 2 and negative (-) lead to terminal 1, then check that the motor operates smoothly.
If operation is not as specified, replace the blower motor.