A/C PRESSURE SENSOR Repair Procedures

Inspection

1. 1
   Measure the high-pressure line pressure by checking the output voltage between terminals "1" and "2".

   

2. 2
   Check the voltage to determine whether it is within specification.

   

   Vdd * (0.001758 * pressure (Psia) + 0.074126)

3. 3
   If the measured voltage is not within specification, replace the A/C pressure transducer.

Diagnosis with GDS

1. 1
   The heating, ventilation and air conditioning (HVAC) system can be diagnosed quickly (defective parts) using the Global Diagnostic System (GDS). ※ The GDS provides the following information. (1) Self-diagnosis: checks and displays diagnostic trouble codes (DTC). (2) Current data: checks the status of input/output signals. (3) Active test: checks system operating conditions. (4) Additional functions: in addition to control, such as zero point adjustment.
2. 2
   Select the "Vehicle Model" and the system to be checked in order to inspect the vehicle with the scan tool.
3. 3
   Select the "Current Data" menu to check the current status of inputs/outputs. The inputs/outputs of the sensors related to the A/C pressure transducer can be checked.

   

REPLACEMENT

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Recover the refrigerant using a refrigerant recovery/recharge system.
3. 3
   Disconnect the air conditioning pressure sensor connector (B).

   

4. 4
   Remove the A/C pressure sensor (A).

   Tightening torque: 10 ~ 13 N·m

   

5. 5
   To install, perform the removal procedure in reverse order.