Titan 4WD V8-5.6L (VK56DE) (2006)
DIAGNOSTIC PROCEDURE FOR BLOWER MOTOR
SYMPTOM: Blower motor operation is malfunctioning under starting blower speed control.
COMPONENT INSPECTION
Front Blower Motor Relay
Check continuity between terminals by supplying 12 volts and ground to coil side terminals of relay.
Front Blower Motor
Confirm smooth rotation of the blower motor.
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Ensure that there are no foreign particles inside the blower unit.
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Apply 12 volts to terminal 2 and ground to terminal 1 and verify that the motor operates freely and quietly.