DTC B1513 / B1514 / B1531

Precautions: Precautions for Diagnosing Trouble · General safety (00)

DTC Detecting Condition and Trouble Area

DTC detecting condition	Trouble area
B1513: Temperature Control Actuator (Motor) and/or Its Circuit Malfunction Difference between target opening and actual opening is more than specified value even though temperature control actuator has operated for specified time.	•Temperature control actuator circuit •Temperature control actuator •HVAC control module
B1514: Air Flow Control Actuator (Motor) and/or Its Circuit Malfunction Difference between target opening and actual opening is more than specified value even though air flow control actuator has operated for specified time.	•Air flow control actuator circuit •Air flow control actuator •HVAC control module
B1531: Air Intake Control Actuator and/or Its Circuit Malfunction Difference between target opening and actual opening is more than specified value even though air intake control actuator has operated for specified time.	•Air intake control actuator circuit •Air intake control actuator •HVAC control module

Circuit Diagram

[A]:	HVAC control module connector (View: [a])	B2.	Air flow control actuator circuit (“FACE”)	C4.	Air intake control actuator position sensor signal circuit
A1.	Temperature control actuator circuit (“COOL”)	B3.	Air flow control actuator position sensor power supply circuit	C5.	Air intake control actuator position sensor ground circuit
A2.	Temperature control actuator circuit (“HOT”)	B4.	Air flow control actuator position sensor signal circuit	1.	Temperature control actuator
A3.	Temperature control actuator position sensor power supply circuit	B5.	Air flow control actuator position sensor ground circuit	2.	Air flow control actuator
A4.	Temperature control actuator position sensor signal circuit	C1.	Air intake control actuator circuit (“FRE”)	3.	Air intake control actuator
A5.	Temperature control actuator position sensor ground circuit	C2.	Air intake control actuator circuit (“REC”)	4.	HVAC control module
B1.	Air flow control actuator circuit (“DEF”)	C3.	Air intake control actuator position sensor power supply circuit

DTC Confirmation Procedure

B1513

1)Start engine and operate A/C system.

2)Change position of temperature selector from “LO” to “HI” gradually.

B1514

1)Start engine and operate A/C system.

2)Push “MODE” switch to change position from “FACE” to “DEF”.

B1531

1)Start engine and operate A/C system.

2)Push air intake switch to change position from “REC” to “FRE”.

DTC Troubleshooting

NOTE:

•When DTC B1513, B1514 and/or B1531 is detected, check that there is any obstruction in opening range of actuator linkage.
•The following flow shows “DTC B1513: Temperature Control Actuator and/or Its Circuit Malfunction”.
•Check “DTC B1514 / B1531” in the same manner as “DTC B1513” referring to the following table.

DTC	Parameter	Circuit
B1514	Mode Pos Sensor	“B1” and “B2” circuit
B1531	R/F Pos Sensor	“C1” and “C2” circuit

Step	Action	Yes	No
1	Scan tool parameter check 1)Check “Air Mix Pos Sen” using “Data list” mode on SUZUKI scan tool. Is check result OK?	Intermittent trouble.	Go to Step 2.
2	Temperature control actuator circuit check 1)Disconnect “G20” and temperature control actuator connectors. 2)Check the following points. •Resistance of “A1” and “A2” circuits: less than 1 Ω •Resistance of “A1” and “A2” circuits between temperature control actuator and ground: infinity Are resistances as specified?	Go to Step 3.	Replace instrument panel harness.
3	Temperature control actuator check 1)Check temperature control actuator. Is actuator in good condition?	Replace HVAC control module and recheck DTC.	Replace temperature control actuator.