B2615 BLOWER RELAY CIRCUIT

POWER DISTRIBUTION SYSTEM

B2615

Description
DTC Logic
Diagnosis Procedure
Component Inspection

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 No.	Trouble diagnosis name	DTC detecting condition	Possible cause
B2615	Blower relay circuit	BCM detects a difference of signal for 1 second or more between the following information. Blower relay ON/OFF request Blower relay feedback	Harness or connectors (Blower relay circuit is open or shorted) Blower relay

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure

1.CHECK BLOWER RELAY POWER SUPPLY

2.CHECK BLOWER RELAY POWER SUPPLY CIRCUIT

3.CHECK BLOWER RELAY GROUND CIRCUIT

4.CHECK BLOWER RELAY

5.CHECK INTERMITTENT INCIDENT

Component Inspection

1.CHECK BLOWER RELAY

(+)	(–)	Condition		Voltage (V) (Approx.)
Blower relay
Terminal
1	Ground	Ignition switch	OFF or ACC	0
			ON	Battery voltage

Blower relay	BCM		Continuity
Terminal	Connector	Terminal	Continuity
1	M122	102	Existed

Blower relay	Ground	Continuity
Terminal
1		Not existed

Blower relay	Ground	Continuity
Terminal
2		Existed

Terminals	Condition	Continuity
3 and 5	12 V direct current supply between terminals 1 and 2	Existed
3 and 5	No current supply	Not existed