Without 7 Inch Display

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR





Description

COMPONENT DESCRIPTION

Upper Ventilator Door Motor





- The upper ventilator door motor (1) are attached to the heater &
cooling unit assembly.

Arrow Indicates : Vehicle front

- Upper ventilator door motor operates by UPPER VENT switch ON/OFF when the DEF switch is OFF.
- Motor rotation is conveyed to a link which activates the upper ventilator door.




DTC Logic

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Without 7 Inch Display or Without 7 Inch Display.






DTC CONFIRMATION PROCEDURE
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform "SELF-DIAGNOSIS RESULTS" of HVAC.
2. Check if any DTC No. is displayed in the self-diagnosis results.

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Without 7 Inch Display or Without 7 Inch Display.
Is DTC No."B2661", "B2662" or "B2663" displayed?
YES - Perform trouble diagnosis for the upper ventilator door motor. Without 7 Inch Display.
NO - GO TO 2.
2.FUNCTION INSPECTION
1. Press the UPPER VENT switch.
2. The UPPER VENT switch indicator is turned ON.
3. Check that the air blown from UPPER VENT does not greatly deviate from the air mix ratio.





4. Press the UPPER VENT switch again.
5. The UPPER VENT switch indicator is turned OFF.
6. The air blown from UPPER VENT stops.
Does it operate normally?
YES - INSPECTION END
NO - Check upper ventilator door motor installation, and repair or replace the malfunctioning parts.




Diagnosis Procedure
1.CHECK POWER SUPPLY FOR UPPER VENTILATOR DOOR MOTOR
Check voltage between upper ventilator door motor harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK SIGNAL FOR UPPER VENTILATOR DOOR MOTOR
Confirm A/C LAN signal between upper ventilator door motor harness connector and ground using an oscilloscope.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair harness or connector.
3.CHECK UPPER VENTILATOR DOOR MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect upper ventilator door motor connector.
3. Check continuity between upper ventilator door motor harness connector and ground.





Is the inspection result normal?
YES - Replace upper ventilator door motor.
NO - Repair harness or connector.