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Home >> Mazda >> 2000 >> 626 LX L4-2.0L DOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> A/C Signal >> Description and Operation
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A/C Signal: Description and Operation




IDLE-UP CONTROL OPERATION
- Engine speed is controlled via the PCM to prevent poor engine performance caused by the A/C compressor and blower motor operation (increased electrical load) while the engine is idling.
- The climate control unit sends A/C and electrical load idle-up signals to the PCM. Based on these signals, the PCM actuates the idle-up device.
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