B263D

B263D B263E, B263F, B2656 INTAKE DOOR MOTOR





Description

COMPONENT DESCRIPTION
The intake door motor (1) is attached to the blower unit. It rotates so that air is drawn from inlets set by the auto amp. Motor rotation is conveyed to a lever which activates the intake door.






Arrow indicates Vehicle front




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
- GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 50 seconds.
2. Check DTC.
Is DTC detected?
YES - Go to Diagnosis Procedure. B2636.
NO - END.




Diagnosis Procedure
1.CHECK INTAKE DOOR CONTROL LINKAGE
Check intake door control linkage.
Is it installed normally?
YES - GO TO 2.
NO - Repair or adjust control linkage.
2.CHECK POWER SUPPLY FOR AUTO AMP.
1. Turn ignition switch ON.
2. Check voltage between auto amp. harness connector M37 terminal 20 and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Replace auto amp. Refer to Service and Repair.
3.CHECK SIGNAL FOR AUTO AMP.
Confirm A/C LAN signal between auto amp. harness connector M37 terminal 3 and ground using an oscilloscope.





Is the inspection result normal?
YES - GO TO 4.
NO - Replace auto amp. Refer to Service and Repair.
4.CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR
Check voltage between intake door motor harness connector M126 terminal 3 and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair harness or connector.
5.CHECK SIGNAL FOR INTAKE DOOR MOTOR
Confirm A/C LAN signal between intake door motor harness connector M126 terminal 1 and ground using an oscilloscope.





Is the inspection result normal?
YES - GO TO 6.
NO - Repair harness or connector.
6.CHECK INTAKE DOOR MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake door motor connector.
3. Check continuity between intake door motor harness connector M126 terminal 2 and ground.





Is the inspection result normal?
YES - Replace intake door motor. Refer to Intake Door Motor.
NO - Repair harness or connector.