B2755
B2753, B2754, B2755 AIR MIX DOOR MOTOR (PASSENGER SIDE)
DTC Logic
DTC DETECTION LOGIC
NOTE:
- If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. HAC-
94, "DTC Logic".
- If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. Control Unit Control Unit Control Unit, "DTC Logic".
- If All of door motors DTC (B2750 � B276A) are detected, check door motor PBR power supply and ground circuit. (With Forest
Air).
- If All of door motors DTC (B2750 � B2764) are detected, check door motor PBR power supply and ground circuit. (Without
Forest Air).
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1. Turn ignition switch ON.
2. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT-III.
3. Check DTC.
Is DTC detected?
YES - SEE Diagnosis Procedure.
NO - INSPECTION END
Diagnosis Procedure
1.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) OPERATION
1. Turn ignition switch ON.
2. Operate temperature control switch (passenger side) and check by operation sound that air mix door motor (passenger side) operates.
Is the inspection result normal?
YES - GO TO 8.
NO - GO TO 2.
2.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) DRIVE SIGNAL
Check voltage between air mix door motor RH harness connector and ground.
Is the inspection result normal?
YES - GO TO 6.
NO - GO TO 3.
3.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) DRIVE SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect air mix door motor RH harness connector and A/C auto amp. harness connector.
3. Check continuity between air mix door motor RH harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES - GO TO 4.
NO - Repair harness or connector.
4.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) DRIVE SIGNAL CIRCUIT FOR GROUND SHORT
Check continuity between air mix door motor RH harness connector and ground.
Is the inspection result normal?
YES - GO TO 5.
NO - Repair harness or connector.
5.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) DRIVE SIGNAL CIRCUIT FOR BATTERY SHORT
1. Turn ignition switch ON.
2. Check voltage between air mix door motor RH harness connector and ground.
Is the inspection result normal?
YES - GO TO 15.
NO - Repair harness or connector.
6.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE)
Check air mix door motor (passenger side). SEE Component Inspection (Motor).
Is the inspection result normal?
YES - GO TO 7.
NO - Replace air mix door motor (passenger side). Air Mix Door Motor Removal And Installation.
7.CHECK INSTALLATION OF AIR MIX DOOR MOTOR (PASSENGER SIDE) CONTROL LINKAGE
Check air mix door motor (passenger side) control linkage is properly installed. Door Motor.
Is the inspection result normal?
YES - GO TO 15.
NO - Repair or replace malfunctioning parts.
8.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) PBR FEEDBACK SIGNAL
Operate temperature control switch (passenger side) and check by voltage between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES - GO TO 15.
NO - GO TO 9.
9.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) PBR FEEDBACK SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect air mix door motor RH harness connector and A/C auto amp. harness connector.
3. Check continuity between air mix door motor RH harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES - GO TO 10.
NO - Repair harness or connector.
10.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) PBR FEEDBACK SIGNAL CIRCUIT FOR SHORT
Check continuity between air mix door motor RH harness connector and ground.
Is the inspection result normal?
YES - GO TO 11.
NO - Repair harness or connector.
11.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) PBR POWER SUPPLY
1. Reconnect A/C auto amp. harness connector.
2. Turn ignition switch ON.
3. Check voltage between air mix door motor RH harness connector and ground.
Is the inspection result normal?
YES - GO TO 13.
NO - GO TO 12.
12.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) PBR POWER SUPPLY CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. harness connector.
3. Check continuity between air mix door motor RH harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES - GO TO 15.
NO - Repair harness or connector.
13.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) PBR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. harness connector.
3. Check continuity between air mix door motor RH harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES - GO TO 14.
NO - Repair harness or connector.
14.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) PBR
Check air mix door motor (passenger side) PBR. SEE Component Inspection (PBR).
Is the inspection result normal?
YES - GO TO 15.
NO - Replace air mix door motor (passenger side). Air Mix Door Motor Removal And Installation.
15.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
Is the inspection result normal?
YES - Replace A/C auto amp. Removal And Installation.
NO - Repair or replace malfunctioning parts.
Component Inspection (Motor)
1.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE)
1. Turn ignition switch OFF.
2. Disconnect air mix door motor RH harness connector.
3. Supply air mix door motor (passenger side) terminals with battery voltage and check by visually and operation sound that air mix door motor (passenger side) operates.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace air mix door motor (passenger side). Air Mix Door Motor Removal And Installation.
Component Inspection (PBR)
1.CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) PBR
Check resistance between air mix door motor (passenger side) PBR terminals.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace air mix door motor (passenger side). Air Mix Door Motor Removal And Installation.