Dtc B1512: Air Flow Control Actuator - Suzuki Swift Sport 2004 Service & Repair Manual

Step
8 Position sensor signal circuit check
1) Measure resistance between "YEL" wire terminal of
temperature control actuator connector and vehicle body
ground.
Is resistance infinity?
9 Position sensor signal circuit check
1) Measure voltage between "YEL" wire terminal of
temperature control actuator connector and vehicle body
ground with ignition switch turned ON.
Is voltage 0 V?
10 Position sensor ground circuit check
1) Connect HVAC control module connector with ignition
switch turned OFF.
2) Measure resistance between "ORN" wire terminal of
temperature control actuator connector and vehicle body
ground.
Is resistance below 5
11 Position sensor ground circuit check
1) Measure resistance between "G52-3" terminal of HVAC
control module connector and vehicle body ground.
Is resistance below 5
12 Temperature control actuator check
1) Check temperature control actuator referring to
"Temperature Control Actuator Inspection".
Is it in good condition?
DTC B1512: Air flow Control Actuator (Position Sensor) and/or Its Circuit Malfunction
Wiring Diagram
2
BRN/WHT
M
BRN/YEL
WHT
WHT/BLU
ORN
1. HVAC control module
DTC Detecting Condition and Trouble Area
Air flow control actuator position sensor signal voltage is higher than or lower
than specified value for specified time continuously.
Action
Ω
?
Ω
?
1
3
G51-1
G51-2
5V
G52-1
5V
G52-14
G52-3
4
2. Air flow control actuator
DTC Detecting Condition
Air Conditioning System: Automatic Type 7B-55
Go to Step 9.
Go to Step 10.
Go to Step 12.
"ORN" wire open or high
resistance circuit.
HVAC control module
faulty.
12V
G52
8 7 6 5 4 3
16 15 14 13 12 11 10
3. To temperature control actuator
Yes
"YEL" wire shorted to
ground circuit.
"YEL" wire shorted to
other circuit.
Go to Step 11.
HVAC control module
faulty.
Temperature control
actuator faulty.
G51
2 1 10 9 8 7 6 5 4 3
9 20 19 18 17 16 15 14 13
4. To other sensors
Trouble Area
• Air flow control actuator circuit
• Air flow control actuator
• HVAC control module
No
S7RS0B7224014
2 1
12 11
I5RS0A722014-01