Kia Cee'd: Troubleshooting / A/C Pressure Transducer Description and operation

The A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed. Engine ECU stops the operation of the compressor when the temperature of refrigerant line is very high or very low irregularly to optimize air conditioning system.

Receiver-Drier Repair procedures

Replacement 1. Remove the condenser. 2. Remove the cap (B) on the bottom of the condenser with a L wrench (A). ...

A/C Pressure Transducer Repair procedures

Inspection 1. Measure the pressure of high pressure line by measuring voltage output between terminal “1” and “2”. 2. ...

Other information:

Kia Cee'd JD Service Manual: Schematic diagrams
Circuit Diagram - ESP (1) Circuit Diagram - ESP (2) Circuit Diagram - ESP (3) Circuit Diagram - ESP (4) ESP Connector Input/ Out put   Wire No. Designation Current ...

: Ignition Switch
Switching the Ignition Off Turn the key to position 0. Switching the Ignition to Accessory Mode Turn the key to position I. Electrical accessories, for example the radio, operate without the engine running. Switching the Ignition On Turn the key to position II. All electrical circuits and access ...