B2615

B2615 BLOWER RELAY CIRCUIT





Description
BCM controls the various electrical components and simultaneously supplies power according to the power supply position.
BCM checks the power supply position internally.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1. PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON under the following conditions, and wait for at least 1 second.
- CVT selector lever is in the P or N position.
- Release brake pedal.
2. Check "SELF-DIAG RESULTS" with CONSULT-III.
Is DTC detected?
YES - Refer to "Diagnosis Procedure".
NO - Inspection End.




Diagnosis Procedure
1. CHECK FRONT BLOWER MOTOR RELAY POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect front blower motor relay.
3. Check voltage between front blower motor relay harness connector and ground under the following conditions.





Is the inspection result normal?
YES - GO TO 3
NO - GO TO 2
2. CHECK FRONT BLOWER MOTOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check continuity between front blower motor relay harness connector and BCM harness connector.





4. Check continuity between front blower motor relay harness connector and ground.





Is the inspection result normal?
YES - GO TO 6
NO - Repair or replace harness.
3. CHECK FRONT BLOWER MOTOR RELAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between front blower motor relay harness connector and ground.





Is the inspection result normal?
YES - GO TO 4
NO - Repair or replace harness.
4. CHECK FRONT BLOWER MOTOR RELAY POWER SUPPLY CIRCUIT-2
Check voltage between front blower motor relay harness connector and ground.





Is the inspection result normal?
YES - GO TO 5
NO - Repair or replace harness.
5. CHECK FRONT BLOWER MOTOR RELAY
Refer to "Component Inspection (Blower Relay)".
Is the inspection result normal?
YES - GO TO 6
NO - Replace front blower motor relay.
6. CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
- Inspection End.




Component Inspection (Blower Relay)
1. CHECK FRONT BLOWER MOTOR RELAY
1. Turn ignition switch OFF.
2. Remove front blower motor relay.





3. Check the continuity between front blower motor relay terminals under the following conditions.





Is the inspection result normal?
YES - Inspection End.
NO - Replace front blower motor relay.