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Geely Emgrand X7. Manual part - 427
8.2.7.8 A/C does not work Circuit diagram: Refer to 8.2.6.2 A/C System Circuit Diagram Diagnostic steps: 1 Carried out A/C self- inspection process (a) Carried out A/C self- inspection process, refer to8.2.7.5 Self- inspection controller. (b) Repair and check all indicator faults by self Does the A/C clutch operate normally?
2 Perform the maintenance procedures according to the symptom list. A. Repair according to the following list of symptoms Symptoms Suspected fault part Maintenance scheme The engine 1. ECT sensor fault circulation state 4. ECM malfunction 1. Repair ECT
harnesses 2. Replacement the thermostat 4. Overhaul ECM ,if necessary ,replace Abnormal A/C 1. Pressure switch shows signal that A/C pressure doesn't meet standard value 2. Pressure switch harnesses fault. malfunction 1. Repair harnesses of pressure switch 2. Replace pressure switch. 3. Overhaul ECM ,if necessary ,replace Outdoor 1. Outdoor temperature sensor shows 2. Fault of outdoor temperature sensor harnesses. 3. A/C control module fault 1. Repair harnesses of outdoor temperature sensor 2. Replace outdoor temperature sensor 3. Overhaul A/C control module, if necessary,replacet Evaporator 1. Evaporator temperature sensor display temperature below 2℃(35.6℉) 2. Evaporator temperature sensor harness fault 3. A/C control module fault 1. Evaporator outdoor temperature sensor harness 2. Replace evaporator termperature sensor. 3. Overhaul A/C control module, if necessary,replacet Refrigerant 1. A/C high-presure exceeds 3.14MPa (455.4psi) 2. Low pressure of A/C is less than 0.196MPa(28.4psi) 1. Residual refrigerant added during emission. 2. Repair fault which caused vehicle's bad radiation. 3. Bad working condition of engine. No Yes The system is normal. 1707 |