NG -- CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - A/C PRESSURE SENSOR)
OK -- Continue to next step.
3. INSPECT A/C PRESSURE SENSOR (SENSOR SIGNAL CIRCUIT)
(a) Reconnect the A/C pressure sensor connector.
(b) Remove the A/C amplifier with the connectors still connected.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
HINT
If the voltage is not as specified, there may be a malfunction in the A/C amplifier, A/C pressure sensor or wire harness. It is also
possible that the amount of refrigerant may not be appropriate.
Text in Illustration
NG -- CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - A/C PRESSURE SENSOR)
OK -- Continue to next step.
4. INSPECT A/C PRESSURE SENSOR (SENSOR SIGNAL CIRCUIT)
(a) Measure the voltage when the following conditions are satisfied.
NOTICE:
* If refrigerant pressure on the high pressure line becomes extremely high during the inspection (if the voltage exceeds 4.84 V),
the fail-safe function stops compressor operation. Therefore, measure the voltage before the fail-safe function operates.
* It is necessary to measure the voltage over a period of time (approximately 10 minutes) because the problem symptom may
recur after a while.
HINT
When the outside air temperature is low (below -1.5锟斤拷C (29.3锟斤拷F)), the compressor stops due to signals from the ambient
temperature sensor and the evaporator temperature sensor to prevent the evaporator from freezing. In this case, perform the
inspection in a warm indoor environment.
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