With 7 Inch Display

B263D, B263E, B263F INTAKE DOOR MOTOR

Description


INTAKE DOOR MOTOR






- The intake door motor (1) is installed to the blower unit.
- The LCU (Local Control Unit) is installed to each door motor so as to perform the multiplex communication control (LAN) between each door motor of the mode door motor, air mix door motor and intake door motor in one communication line.
- When each LCU receives the control signal (combination of the pulse wave with two type of amplitude) from the A/C auto amp., it moves each door to the appropriate position based on the door position detection signal of each PBR (Potentio Balance Resistor).
When the movement was completed, each LCU transmits the signal that reports the movement completion to the A/C auto amp.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PERFORM SELF-DIAGNOSIS

With CONSULT
1.Perform the "SELF-DIAGNOSIS".
2.Check if any DTC is detected in the self-diagnostic results.
NOTE:
- If DTC is displayed along with DTC "U1000" or "U1010", first diagnose the DTC "U1000" or "U1010". Refer to
With 7 Inch Display or With 7 Inch Display.
- If all of door motors DTC (B2632 - B2655) are detected, check door motor communication circuit. Refer to
With 7 Inch Display.
Is DTC " B263D ", " B263E " or "B263F " displayed?
YES- Perform the diagnosis of intake door motor system. .
NO- GO TO 2.

2. FUNCTION INSPECTION

1.Press intake switch to set the air outlet to recirculation.
2.The intake switch indicator is turned ON.
3.Listen to intake sound and confirm air inlets change.
4.Press intake switch again to set the air outlet to fresh air intake.
5.The intake switch indicator is turned OFF.
6.Listen to intake sound and confirm air inlets change.
Does it operate normally?
YES- INSPECTION END
NO- Check the intake door system installation condition. Repair or replace the malfunctioning parts.


Diagnosis Procedure


1. CHECK BATTERY VOLTAGE OF INTAKE DOOR MOTOR

1.Turn the ignition switch ON.
2.Check voltage between the intake door motor harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Repair the harnesses or connectors.

2. CHECK INTAKE DOOR MOTOR SIGNAL

Check output waveform between the intake door motor harness connector and ground with the oscilloscope.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair the harnesses or connectors.

3. CHECK INTAKE DOOR MOTOR GROUND CIRCUIT

1.Turn the ignition switch OFF.
2.Disconnect the intake door motor connector.
3.Check for continuity between the intake door motor harness connector and ground.





Is the inspection result normal?
YES- Replace the Intake door motor.
NO- Repair the harnesses or connectors.