Monday, June 24, 2019

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 305


B -- END (AIR MIX CONTROL SERVO MOTOR WAS DEFECTIVE)



A -- Continue to next step.



1. INSPECT AIR CONDITIONING HARNESS



(a) Replace the air conditioning harness See: Heating and Air Conditioning/Housing Assembly HVAC/Service and



Repair/Overhaul/Disassembly.



HINT



Since the air conditioning harness cannot be inspected while it is removed from the vehicle, replace the air conditioning harness



with a new or a known good one and check that the condition returns to normal.



(b) Check for the DTC.



Result:



B -- END (AIR CONDITIONING HARNESS WAS DEFECTIVE)



A -- REPLACE A/C AMPLIFIER



From 08/2009



HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: B1441/41: Air Mix Damper Control Servo Motor Circuit



(Passenger Side)



B1441/41 - Air Mix Damper Control Servo Motor Circuit (Passenger Side)



DESCRIPTION



The air mix control servo motor sends pulse signals to indicate the damper position to the A/C amplifier. The A/C amplifier activates the motor



(normal or reverse) based on these signals to move the air mix damper (front passenger side) to any position. As a result, the amount of air passing



through the heater core after passing through the evaporator is adjusted, and the temperature of the air blowing toward the passenger side is



controlled.



The A/C amplifier communicates with the servo through a communication/driver IC and wiring assembly called the air conditioning harness.



HINT



Confirm that no mechanical problem is present because this DTC can be output when either a damper link or the damper is

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