B2615

B2615 BLOWER RELAY CIRCUIT





Description
BCM turns ON the following relays to ignition power supply to each ECU when the ignition switch is turned ON.
- Ignition relay
- Ignition relay (inside IPDM E/R)
- Blower relay
BCM checks any blower relay ON request for consistency with the actual blower relay operation status.




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 1 second or more.
- Selector lever is in the P position
- Do not depress brake pedal
2. Check "Self-diagnosis result" with CONSULT-III.
Is DTC detected?
YES - Go to B2615.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK BLOWER RELAY POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect blower relay.
3. Check voltage between blower relay harness connector and ground.





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





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





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





Is the inspection result normal?
YES - GO TO 4.
NO - Repair blower relay ground circuit.
4.CHECK BLOWER RELAY POWER SUPPLY CIRCUIT-2
1. Turn ignition switch ON or ACC.
2. Check voltage between blower relay harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Check continuity open or short between blower relay and battery.
5.CHECK BLOWER RELAY
B2615.
Is the inspection result normal?
YES - GO TO 6.
NO - Replace blower relay.
6.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END




Component Inspection
1.CHECK BLOWER RELAY
1. Turn ignition switch OFF.
2. Remove blower relay.





3. Check the continuity between blower relay terminals.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace blower relay