Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - HEATING / AIR CONDITIONING
READ VALUE USING INTELLIGENT TESTER (AIR OUTLET DAMPER SERVO MOTOR)
CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR DEF MODE)
CHECK AIR CONDITIONING HARNESS ASSEMBLY
DTC B1455/55 Driver Side Air Outlet Damper FOOT/DEF Control Servo Motor Circuit
DESCRIPTION
Air outlet damper servo motor (for DEF mode) 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 air outlet damper (for DEF mode) 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 |
| B1455/55 | The air outlet damper position does not change even if the air conditioning amplifier assembly operates the air outlet damper servo motor (for DEF mode) | Air outlet damper servo motor (for DEF mode) Air conditioning harness assembly Air conditioning amplifier assembly |
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.READ VALUE USING INTELLIGENT TESTER (AIR OUTLET DAMPER SERVO MOTOR) |
Use the Data List to check if the servo motor is functioning properly.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| A/O Damper FOOT/DEF Pos(P) | Air outlet damper servo motor (for DEF mode) target pulse / Min.: 6, Max.: 117 |
FACE1: 117 (pulse) FACE2: 109 (pulse) B/L1: 93 (pulse) B/L2: 81 (pulse) FOOT-D: 52 (pulse) FOOT-R: 41 (pulse) FOOT-F: 41 (pulse) F/D: 18 (pulse) DEF: 6 (pulse) | - |
- OK:
- The display is as specified in the normal condition.
| Result | Proceed to |
| OK (Checking from the DTC) | A |
| OK (Checking from the PROBLEM SYMPTOMS TABLE) | B |
| NG | C |
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| A | |
| 2.CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR DEF MODE) |
Replace the air outlet servo motor (for DEF mode) ().
- HINT:
- Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.
Clear the DTCs ().
Check for DTCs ().
| Result | Proceed to |
| DTC B1455/55 is not output | A |
| DTC B1455/55 is output | B |
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| A | ||
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| 3.CHECK AIR CONDITIONING HARNESS ASSEMBLY |
Replace the air conditioning harness assembly ().
Clear the DTCs ().
Check for DTCs ().
| Result | Proceed to |
| DTC B1455/55 is not output | A |
| DTC B1455/55 is output | B |
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| A | ||
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