This sensor sends pulse per engine revolution to the AC amplifier If the number ratio of the compressor speed divided by the engine speed is smaller than a predetermined value the AC amplifier turns the compressor off And the indicator flashes at about se


Detection Item

Trouble Area


All conditions below are detected for 3 secs. or more.

(b) Ratio between engine and compressor speed deviates 20 % or more in comparison to normal operation.

• Compressor drive belt

• Compressor lock sensor

• Compressor

• Harness or connector between compressor and A/C amplifier

• A/C amplifier

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