Suzuki 2006 SX4, Service Manual

Page: 932 / 1478

7B-67 Air Conditioning System: Automatic Type
DTC B1514: Air Flow Control Actuator (Motor) and/or Its Circuit Malfunction
S6RW0C7224016
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
G20
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 24 23 22 25 26 27 28 29 30
BRN/YEL
BRN/WHT
5V
5V
12V
ORN
WHT G20-12
G20-28
G20-24
G20-15
G20-16
WHT/BLU
2
3
4
1
[D]
I6RW0C722007-01
[D]: Air flow actuator motor drive circuit 2. Air flow control actuator 4. To other sensors
1. HVAC control module 3. To temperature control actuator
DTC Detecting Condition Trouble Area
Motor of air flow control actuator does not move longer than specified time. • Air flow control actuator circuit
• Air flow control linkage
• Air flow control actuator
• HVAC unit
• HVAC control module
Step Action Yes No
1 Was “Air Conditioning System Check” performed? Go to Step 2. Go to “Air Conditioning
System Check”.
2 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch to ON position and check DTC.
Is DTC B1512 detected together?
Go to “DTC B1512: Air
flow Control Actuator
(Position Sensor) and/or
Its Circuit Malfunction”. Go to Step 3.
3 Visual Check
Check if there is any obstruction in operating range of
actuator linkage and if actuator linkage operates smoothly.
Is it in good condition?
Go to Step 4. Obstruction in operating
range of actuator
linkage, actuator linkage
faulty and/or internal
fault of HVAC unit.
4 Wire harness check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from air flow control actuator and
HVAC control module.
3) Check for proper connection to actuator motor drive
circuit terminals of air flow control actuator and HVAC
control module connectors.
4) If OK, check that actuator motor drive circuit of air flow
control actuator is as follows.
• Wiring harness resistance of each actuator motor
drive circuit is less than 3
Ω
• Insulation resistance of each actuator motor drive
circuit is infinity between air flow control actuator
connector and vehicle body ground
• Circuit voltage of each actuator motor drive circuit is 0
– 1 V with ignition switch turned ON
Are they in good condition?
Go to Step 5. Actuator motor drive
circuit(s) is open, short
or high resistance.