Connect GDS to DLC(Data Link Cable).
Warm up the engine to normal operating temperature.
Monitor "A/C Refrigerant Pressure Sensor" parameter on the "Current Data" with GDS.
Fig.1) Normal data of A/C pressure sensor without A/C switch OFF.
Fig.2) Normal waveforms of A/C pressure sensor during the time from turning on A/C switch to turning off A/C switch
Are the parameters displayed correctly ?
 | ▶ Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of vehicle Repair" procedure. |
 | ▶ Go to "Terminal & Connector Inspection" procedure. |
