Camry L4-1839cc DSL (1CLC) (1985)
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Compressor Speed Sensor: All Technical Service Bulletins
A/C - Warning Light Flashes
REFERENCEELECTRICAL
NUMBER
020
DATE
9-21-84
MODEL
CE, SV, CV
CONDITION:
The indicator lamp in the A/C switch begins flashing with air conditioning on in a Camry or Diesel Corolla.
CAUSE:
The possible cause is that the air conditioner amplifier has sensed compressor malfunction and/or drive belt slippage, and has disengaged the compressor
magnetic clutch to prevent reduction of alternator or power steering pump output, and/or belt damage.
CORRECTION:
Determine the cause of compressor malfunction or belt slippage and correct as necessary.
NORMAL SYSTEM OPERATION:
The air conditioner compressor is equipped with a revolution sensor. The output of this sensor is compared by the A/C amplifier with engine RPM. If the
amplifier senses a drop in compressor RPM relative to engine RPM it determines that a problem in the compressor has occurred. If this condition
continues for longer than 0.6 seconds, the compressor clutch is switched off, idle-up is released, and the A/C switch indicator lamp flashes. The indicator
lamp will continue to flash until the ignition switch is turned off to cancel the flashing light.
