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Home >> Suzuki >> 2005 >> Aerio SX, AWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System >> Diagnostic Information and Procedures >> Inspection of HVAC Control Module and its Circuit >> Reference Waveform
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Reference Waveform

NOTE: The shape of waveform varies with engine coolant temperature.
REFERENCE WAVEFORM CHART

Measurement terminal G77-24 to G77-25> 
Oscilloscope setting CH1: 5V/DIV
TIME: 200 ms/DIV
Measurement condition Ignition switch turned ON

Waveform at 0 °C (32 °F)

Fig 1: Waveform - Engine Coolant Temperature (1 Of 3)
G04015693Courtesy of SUZUKI OF AMERICA CORP.

Waveform at 40°C (104°F)

Fig 2: Waveform - Engine Coolant Temperature (2 Of 3)
G04015694Courtesy of SUZUKI OF AMERICA CORP.

Waveform at 80°C (176°F)

Fig 3: Waveform - Engine Coolant Temperature (3 Of 3)
G04015695Courtesy of SUZUKI OF AMERICA CORP.