Dtc B1448/48 Passenger Side Face 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 GTS (AIR OUTLET SERVO TARG[P], AIR OUTLET SERVO ACTU[P])

CHECK MODE DAMPER SERVO MOTOR (for Front Passenger Side)

CHECK AIR CONDITIONING HARNESS ASSEMBLY

CHECK FOR DTC

DTC B1448/48 Passenger Side FACE Servo Motor Circuit


DESCRIPTION

  1. *1: for LHD
  2. *2: for RHD
The mode damper servo motor RH*1 or LH*2 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 mode damper servo motor RH*1 or LH*2 to any position, which controls the air outlet changes.
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
B1448/48
The air outlet damper position does not change even if the air conditioning amplifier assembly operates the air outlet damper servo motor.
  1. Mode damper servo motor RH*1
  2. Mode damper servo motor LH*2
  3. Air conditioning harness assembly
  4. Air conditioning amplifier assembly

WIRING DIAGRAM


w/ Rear Heater:

Land Cruiser. Urj200, 202 Grj200 Vdj200.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System). Dtc B1448/48 Passenger Side Face Servo Motor Circuit


w/o Rear Heater:

Land Cruiser. Urj200, 202 Grj200 Vdj200.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System). Dtc B1448/48 Passenger Side Face Servo Motor Circuit


INSPECTION PROCEDURE

1.READ VALUE USING GTS (AIR OUTLET SERVO TARG[P], AIR OUTLET SERVO ACTU[P])
  1. *1: for LHD
  2. *2: for RHD

  1. Use the Data List to check if the mode damper servo motor RH*1 or LH*2 is functioning properly (Click here).

    Air Conditioner
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Air Outlet Servo Targ Pulse(P)
    		Mode pamper servo motor RH*1 or LH*2 target pulse / Min.: 128, Max.: 383
    for LHD:
    1. FACE1: 245 (pulse)
    2. FACE2: 237 (pulse)
    3. B/L1: 221 (pulse)
    4. B/L2: 209 (pulse)
    5. FOOT-O: 199 (pulse)
    6. FOOT-D: 180 (pulse)
    7. FOOT-R: 169 (pulse)
    8. FOOT-F: 169 (pulse)
    9. F/D: 146 (pulse)
    10. DEF: 134 (pulse)
    for RHD:
    1. FACE1: 137 (pulse)
    2. FACE2: 145 (pulse)
    3. B/L1: 161 (pulse)
    4. B/L2: 173 (pulse)
    5. FOOT-O: 183 (pulse)
    6. FOOT-D: 202 (pulse)
    7. FOOT-R: 213 (pulse)
    8. FOOT-F: 213 (pulse)
    9. F/D: 263 (pulse)
    10. DEF: 248 (pulse)
    1. Displayed between 136 and 245 pulse (for LHD)
    2. Displayed between 137 and 248 pulse (for RHD)
    3. Mode damper servo motor RH system malfunction
    Air Outlet Servo Actu Pulse(P)
    		Mode pamper servo motor RH*1 or LH*2 actual pulse / Min.: 128, Max.: 383
    for LHD:
    1. FACE1: 245 (pulse)
    2. FACE2: 237 (pulse)
    3. B/L1: 221 (pulse)
    4. B/L2: 209 (pulse)
    5. FOOT-O: 199 (pulse)
    6. FOOT-D: 180 (pulse)
    7. FOOT-R: 169 (pulse)
    8. FOOT-F: 169 (pulse)
    9. F/D: 146 (pulse)
    10. DEF: 134 (pulse)
    for RHD:
    1. FACE1: 137 (pulse)
    2. FACE2: 145 (pulse)
    3. B/L1: 161 (pulse)
    4. B/L2: 173 (pulse)
    5. FOOT-O: 183 (pulse)
    6. FOOT-D: 202 (pulse)
    7. FOOT-R: 213 (pulse)
    8. FOOT-F: 213 (pulse)
    9. F/D: 263 (pulse)
    10. DEF: 248 (pulse)
    1. Displayed between 136 and 245 pulse (for LHD)
    2. Displayed between 137 and 248 pulse (for RHD)
    3. Mode damper servo motor RH system malfunction
    OK:
    When the front passenger side mode switch is turned, the actual pulse changes following the target pulse.
    Result
    Result
    		Proceed to
    Target pulse changes but actual pulse does not change
    		A
    Target pulse and actual pulse do not change
    		B
    Actual pulse changes following the target pulse (When troubleshooting according to the DTC)
    		C
    Actual pulse changes following the target pulse (When troubleshooting according to Problem Symptoms Table)
    		D


B
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)

C
Go to step 4

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


2.CHECK MODE DAMPER SERVO MOTOR (for Front Passenger Side)

  1. for LHD:

    1. Replace the mode damper servo motor RH (Click here).

  1. for RHD:

    1. Replace the mode damper servo motor LH (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).

    OK:
    DTC B1448/482 is not output.


NG
Go to step 3
OK

END (AIR MODE DAMPER SERVO MOTOR [for Front Passenger Side] WAS DEFECTIVE)

3.CHECK AIR CONDITIONING HARNESS ASSEMBLY

  1. Replace the air conditioning harness assembly with a new or known one.

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

  1. Clear the DTCs (Click here).

  1. Check for DTCs (Click here).

    OK:
    DTC B1448/482 is not output.


NG
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)
OK

END (AIR CONDITIONING HARNESS ASSEMBLY WAS DEFECTIVE)

4.CHECK FOR DTC

  1. Clear the DTCs (Click here).

  1. Check for DTCs (Click here).

    OK:
    DTC B1448/482 is not output.


NG
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)
OK

USE SIMULATION METHOD TO CHECK (Click here)