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Home >> Suzuki >> 2004 >> Grand Vitara EX, 4WD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Automatic A/C Systems >> Repair Instructions >> HVAC Control Module and Its Circuits Inspection >> Reference Waveform No. 1
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Reference Waveform No. 1

NOTE: The shape of waveform varies with engine coolant temperature.
Fig 1: Reference Waveform No. 1 Chart
G00758000Courtesy of SUZUKI OF AMERICA CORP.

Waveform at 0 °C (32 °F)

Fig 2: Measuring Waveform At 0 °C (32 °F)
G00758001Courtesy of SUZUKI OF AMERICA CORP.

Waveform at 40 °C (104 °F)

Fig 3: Measuring Waveform At 40 °C (104 °F)
G00758002Courtesy of SUZUKI OF AMERICA CORP.

Waveform at 80 °C (176 °F)

Fig 4: Measuring Waveform At 80 °C (176 °F)
G00758003Courtesy of SUZUKI OF AMERICA CORP.