B2768
B2768, B2769, B276A AROMA MOTOR
DTC Logic
DTC DETECTION LOGIC
NOTE:
- If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. CAN Comm Circuit.
- If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. Control Unit.
- If All of door motors DTC (B2750 - B276A) are detected, check door motor PBR power supply and ground circuit. With Forest Air.
DTC CONFIRMATION PROCEDURE
1. PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.Turn ignition switch ON.
2.Select "Self Diagnostic Result" mode of "HVAC" using CONSULT.
3.Check DTC.
Is DTC detected?
YES- .
NO- INSPECTION END
Diagnosis Procedure
1. CHECK AROMA MOTOR OPERATION
1.Turn ignition switch ON.
2.Operate temperature control switch and set the temperature setting to the same level as ambient temperature.
3.Operate FOREST switch and OFF switch alternately so that aroma diffuser control switches between ON from/to OFF.
4.Perform this operation for 2 sets. Check by operation sound that aroma motor operates.
NOTE:
Operation of aroma diffuser control can be checked immediately after FOREST switch is turned OFF
once, and then is turned ON again. Operation direction of motor is switched by turning in ON again after turning it off. (Leaf scent from/to Fragrant wood)
Is the inspection result normal?
YES- GO TO 7.
NO- GO TO 2.
2. CHECK AROMA MOTOR DRIVE SIGNAL
1.Operate FOREST switch and OFF switch alternately so that aroma diffuser control switches between ON from/to OFF.
2.Check voltage between aroma motor harness connector and ground, when this operation is performed for
2 sets.
NOTE:
Operation of aroma diffuser control can be checked immediately after FOREST switch is turned off once, and then is turned ON again. Operation direction of motor is switched by turning in ON again after turning it off. (Leaf scent from/to Fragrant wood)
Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 3.
3. CHECK AROMA MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN
1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Disconnect aroma motor connector.
4.Check continuity between aroma motor 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 AROMA MOTOR DRIVE SIGNAL CIRCUIT FOR GROUND SHORT
Check continuity between aroma motor harness connector and ground.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair harness or connector.
5. CHECK AROMA MOTOR DRIVE SIGNAL CIRCUIT FOR BATTERY SHORT
1.Turn ignition switch ON.
2.Check voltage between aroma motor harness connector and ground.
Is the inspection result normal?
YES- GO TO 14.
NO- Repair harness or connector.
6. CHECK AROMA MOTOR
Check aroma motor. .
Is the inspection result normal?
YES- GO TO 14.
NO- Replace aroma motor. Removal And Installation.
7. CHECK AROMA MOTOR PBR FEEDBACK SIGNAL
1.Operate FOREST switch and OFF switch alternately so that aroma diffuser control switches between ON from/to OFF.
2.Check voltage between A/C auto amp. connector and ground, when this operation is performed for 2 sets.
NOTE:
Operation of aroma diffuser control can be checked immediately after FOREST switch is turned off once, and then is turned ON again. Operation direction of motor is switched by turning in ON again after turning it off. (Leaf scent from/to Fragrant wood)
Is the inspection result normal?
YES- GO TO 14.
NO- GO TO 8.
8. CHECK AROMA MOTOR PBR FEEDBACK SIGNAL CIRCUIT FOR OPEN
1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Disconnect aroma motor connector.
4.Check continuity between aroma motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES- GO TO 9.
NO- Repair harness or connector.
9. CHECK AROMA MOTOR PBR FEEDBACK SIGNAL CIRCUIT FOR SHORT
Check continuity between aroma motor harness connector and ground.
Is the inspection result normal?
YES- GO TO 10.
NO- Repair harness or connector.
10. CHECK AROMA MOTOR PBR POWER SUPPLY
1.Connect A/C auto amp. connector.
2.Turn ignition switch ON.
3.Check voltage between aroma motor harness connector and Ground.
Is the inspection result normal?
YES- GO TO 12.
NO- GO TO 11.
11. CHECK AROMA MOTOR PBR POWER SUPPLY CIRCUIT FOR OPEN
1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Check continuity between aroma motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES- GO TO 14.
NO- Repair harness or connector.
12. CHECK AROMA MOTOR PBR GROUND CIRCUIT
1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Check continuity between aroma motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES- GO TO 13.
NO- Repair harness or connector.
13. CHECK AROMA MOTOR PBR
Check aroma motor PBR. .
Is the inspection result normal?
YES- GO TO 14.
NO- Replace aroma motor. Removal And Installation.
14. CHECK INTERMITTENT INCIDENT
Intermittent Incident.
Is the inspection result normal?
YES- Replace A/C auto amp. Removal And Installation.
NO- Repair or replace malfunction parts.
Component Inspection (Motor)
1. CHECK AROMA MOTOR
1.Turn ignition switch OFF.
2.Disconnect aroma motor connector.
3.Supply aroma motor terminals with battery voltage and check by visually and operation sound that aroma motor operates.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace aroma motor. Removal And Installation.
Component Inspection (PBR)
1. CHECK AROMA MOTOR PBR
Check resistance between aroma motor terminals.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace aroma motor. Removal And Installation.