Dtc B1458/58 Passenger Side Air Outlet Damper Control Servo Motor Circuit

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Heating Air Conditioning. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (FRONT AIR MIX DAMPER SERVO MOTOR)

CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR FRONT PASSENGER SIDE REAR AIR FLOW)

CHECK AIR CONDITIONING HARNESS ASSEMBLY

DTC B1458/58 Passenger Side Air Outlet Damper Control Servo Motor Circuit


DESCRIPTION

The front air mix damper servo motor (for front passenger side rear air flow) sends pulse signals to inform the air conditioning amplifier assembly of the damper position. The air conditioning amplifier assembly activates the motor (normal or reverse) based on the signals to move the front air mix damper (for front passenger side rear air flow) to any position. As a result, the amount of air that has passed through the evaporator and is passing through the heater core is adjusted, and the temperature of the air blowing toward the rear passenger side is controlled.
HINT:
Confirm that no mechanical problem is present because this trouble code can be output when either a damper link or damper is mechanically locked.

DTC Code
DTC Detection Condition
Trouble Area
B1458/58
The air mix damper position does not change even if the air conditioning amplifier assembly operates the front air mix damper servo motor.
  1. Front air mix damper servo motor (for front passenger side rear air flow)
  2. Air conditioning harness assembly
  3. Air conditioning amplifier assembly

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System). Dtc B1458/58 Passenger Side Air Outlet Damper Control Servo Motor Circuit


Land Cruiser. Urj200, 202 Grj200 Vdj200.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System). Dtc B1458/58 Passenger Side Air Outlet Damper Control Servo Motor Circuit


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (FRONT AIR MIX DAMPER SERVO MOTOR)

  1. Use the Data List to check if the servo motor is functioning properly.

    Air Conditioner
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Air Mix Servo Targ Pls (F&R P)
    		Front air mix damper servo motor (for front passenger side rear air flow) target pulse /
    Min.: 5, Max.: 33 (for LHD)
    Min.: 13, Max.: 41 (for RHD)
    		for LHD
    1. MAX COOL: 33 (pulse)
    2. MAX HOT: 5 (pulse)
    for RHD
    1. MAX COOL: 13 (pulse)
    2. MAX HOT: 41 (pulse)
    		-
    OK:
    The display is as specified in the normal condition.

    Result
    Result
    		Proceed to
    OK (Checking from the DTC)
    		A
    OK (Checking from the PROBLEM SYMPTOMS TABLE)
    		B
    NG
    		C


B
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

C
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)
A


2.CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR FRONT PASSENGER SIDE REAR AIR FLOW)

  1. Replace the front air mix damper servo motor (for front passenger side rear air flow).

    1. for LHD: Click here
    2. for RHD: Click here
    HINT:
    Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

  1. Clear the DTCs (Click here).

  1. Check for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B1458/58 is not output
    		A
    DTC B1458/58 is output
    		B


B
Go to step 3
A

END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR FRONT PASSENGER SIDE REAR AIR FLOW] IS DEFECTIVE)

3.CHECK AIR CONDITIONING HARNESS ASSEMBLY

  1. Replace the air conditioning harness assembly.

    1. for LHD: Click here
    2. for RHD: Click here

  1. Clear the DTCs (Click here).

  1. Check for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B1458/58 is not output
    		A
    DTC B1458/58 is output
    		B


B
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)
A

END (AIR CONDITIONING HARNESS ASSEMBLY IS DEFECTIVE)