Suzuki Grand Vitara 2011 Manual page 1578

7B-53 Air Conditioning System:
Step
5 Position sensor power supply circuit check
1) Measure resistance between "RED/WHT" wire terminal
of air intake control actuator connector and vehicle body
ground.
Is resistance infinity?
6 Position sensor power supply circuit check
1) Measure voltage between "RED/WHT" wire terminal of
air flow control actuator connector and vehicle body
ground with ignition switch turned ON.
Is voltage 0 V?
7 Position sensor signal circuit check
1) Connect HVAC control module connector with ignition
switch turned OFF.
2) Measure voltage between "WHT/GRN" wire terminal of
air intake control actuator connector and vehicle body
ground with ignition switch turned ON.
Is voltage 4 – 6 V?
8 Position sensor signal circuit check
1) Disconnect connector from HVAC control module with
ignition switch turned OFF.
2) Measure resistance between "WHT/GRN" wire terminal
of air intake control actuator connector and "G52-22"
terminal of HVAC control module connector.
Is resistance below 5
9 Position sensor signal circuit check
1) Measure resistance between "WHT/GRN" wire terminal
of air intake control actuator connector and vehicle body
ground.
Is resistance infinity?
10 Position sensor signal circuit check
1) Measure voltage between "WHT/GRN" wire terminal of
air intake control actuator connector and vehicle body
ground with ignition switch turned ON.
Is voltage 0 V?
11 Position sensor ground circuit check
1) Connect HVAC control module connector with ignition
switch turned OFF.
2) Measure resistance between "BLK/RED" wire terminal of
air intake control actuator connector and vehicle body
ground.
Is resistance below 5
12 Position sensor ground circuit check
1) Measure resistance between "G52-13" terminal of HVAC
control module connector and vehicle body ground.
Is resistance below 5
13 Air intake control actuator check
1) Check air intake control actuator referring to "Air Intake
Control Actuator Inspection".
Is it in good condition?
Action
Ω
?
Ω
?
Ω
?
Yes
Go to Step 6.
Go to Step 7.
Go to Step 11.
Go to Step 9.
Go to Step 10.
Go to Step 11.
Go to Step 12.
"BLK/RED" wire open or
high resistance circuit.
HVAC control module
faulty.
No
"RED/WHT" wire
shorted to ground
circuit.
"RED/WHT" wire
shorted to other circuit.
Go to Step 8.
"WHT/GRN" wire open
or high resistance
circuit.
"WHT/GRN" wire
shorted to ground
circuit.
"WHT/GRN" wire
shorted to other circuit.
Go to Step 13.
HVAC control module
faulty.
Air intake control
actuator faulty.