Dtc B1511: Temperature Control Actuator - Suzuki Swift Sport 2004 Service & Repair Manual

Step
4 Sunload sensor power supply circuit check
1) Measure voltage between "PNK" wire terminal of
sunload sensor connector and vehicle body ground with
ignition switch turned ON.
Is voltage 0 V?
5 Sunload sensor signal circuit check
1) Disconnect HVAC control module connector with ignition
switch turned OFF.
2) Measure resistance between "YEL/BLK" wire terminal of
sunload sensor connector and vehicle body ground.
Is resistance infinity?
6 Sunload sensor signal circuit check
1) Measure resistance between "G52-5" terminal of HVAC
control module connector and "YEL/BLK" wire terminal
of sunload sensor connector.
Is resistance below 5
7 Sunload sensor signal circuit check
1) Measure voltage between "YEL/BLK" wire terminal of
sunload sensor connector and vehicle body ground with
ignition switch turned ON.
Is voltage 0 V?
8 Sunload sensor check
1) Check sunload sensor referring to "Sunload Sensor
Inspection".
Is it in good condition?
DTC B1511: Temperature Control Actuator (Position Sensor) and/or Its Circuit Malfunction
Wiring Diagram
2
GRY/BLU
M
GRY/RED
WHT
YEL
ORN
1. HVAC control module
DTC Detecting Condition and Trouble Area
Temperature control actuator position sensor signal voltage is higher than or
lower than specified value for specified time continuously.
Action
Ω
?
1
3
G51-3
G51-4
5V
G52-1
5V
G52-13
G52-3
4
2. Temperature control actuator
DTC Detecting Condition
Air Conditioning System: Automatic Type 7B-53
Go to Step 5.
Go to Step 6.
Go to Step 7.
Go to Step 8.
HVAC control module
faulty.
12V
G52
8 7 6 5 4 3
16 15 14 13 12 11 10
3. To air flow control actuator
Yes
"PNK" wire shorted to
other circuit.
"YEL/BLK" wire shorted
to ground circuit.
"YEL/BLK" wire open or
high resistance circuit.
"YEL/BLK" wire shorted
to other circuit.
Sunload sensor 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
• Temperature control actuator circuit
• Temperature control actuator
• HVAC control module
No
S7RS0B7224013
2 1
12 11
I5RS0A722013-01