B2636
B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR
Description
COMPONENT DESCRIPTION
The mode door motor (1) are attached to the heater unit assembly. It rotates so that air is discharged from the outlet set by the unified meter and A/C amp. Motor rotation is conveyed to a link which activates the mode 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. "Diagnosis Procedure".
NO - END.
Diagnosis Procedure
1.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 2.
NO - Replace auto amp. Refer to Service and Repair.
2.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 3.
NO - Replace auto amp. Refer to Service and Repair.
3.CHECK POWER SUPPLY FOR MODE DOOR MOTOR
Check voltage between mode door motor harness connector M127 terminal 3 and ground.
Is the inspection result normal?
YES - GO TO 4.
NO - Repair harness or connector.
4.CHECK SIGNAL FOR MODE DOOR MOTOR
Confirm A/C LAN signal between mode door motor harness connector M127 terminal 1 and ground using an oscilloscope.
Is the inspection result normal?
YES - GO TO 5.
NO - Repair harness or connector.
5.CHECK MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect mode door motor connector.
3. Check continuity between mode door motor harness connector M127 terminal 2 and ground.
Is the inspection result normal?
YES - Replace mode door motor. Refer to Mode Door Motor.
NO - Repair harness or connector.