Suzuki Grand Vitara 2011 Manual page 1567

Step
7 Position sensor signal circuit check
1) Connect HVAC control module connector with ignition
switch turned OFF.
2) Measure voltage between "WHT/RED" wire terminal of
temperature 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/RED" wire terminal
of temperature control actuator connector and "G52-21"
terminal of HVAC control module connector.
Is resistance below 5
9 Position sensor signal circuit check
1) Measure resistance between "WHT/RED" wire terminal
of temperature control actuator connector and vehicle
body ground.
Is resistance infinity?
10 Position sensor signal circuit check
1) Measure voltage between "WHT/RED" wire terminal of
temperature 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
temperature 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 Temperature control actuator check
1) Check temperature control actuator referring to
"Temperature Control Actuator Inspection".
Is it in good condition?
Action
Ω
?
Ω
?
Ω
?
Air Conditioning System:
Yes
Go to Step 11.
Go to Step 9.
Go to Step 10.
Go to Step 11.
Go to Step 13.
"BLK/RED" wire open or
high resistance circuit.
HVAC control module
faulty.
7B-42
No
Go to Step 8.
"WHT/RED" wire open
or high resistance
circuit.
"WHT/RED" wire
shorted to ground
circuit.
"WHT/RED" wire
shorted to other circuit.
Go to Step 12.
HVAC control module
faulty.
Temperature control
actuator faulty.