Diagnostic Trouble Code (DTC) Information

ECM-500A AIR CONDITIONING (A/C) PRESSURE SENSOR
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION




The control module checks the compressor clutch thermal connector once per operating cycle or 15 minutes after the last compressor activation. The control module also checks that the pressure rises 97 kPa within 20 seconds of the first compressor activation. Diagnostic trouble code (DTC) ECM-500A is stored if the engine control module (ECM) registers any fault.

Condition
- Air conditioning (A/C) shut off
- An A/C pressure of 700 kpa is assumed.

Possible source

Faulty signal:
- too little coolant
- defective air conditioning (A/C) pressure sensor
- defective air conditioning (A/C) air conditioning compressor.

Condition
The air conditioning (A/C) compressor does not operate.