- If one of the valves installed in the refrigerant circuit is faulty or does not work correctly. Refer to Refrigerant Circuit
.
- One of the pumps or one of the valves in the high-voltage system coolant circuit is faulty or does not function correctly. Refer to Coolant Circuit
.
- One in or on the removed refrigerant circuit pressure/temperature sensor or temperature sensor sends incorrect values. Use the Vehicle Diagnostic Tester in the"Guided Fault Finding"
function. Refer to Component Location Overview - A/C System
.
- Constriction of blockage in the refrigerant line to or from the expansion valve on the evaporator for cooling the high-voltage components.
-- Check the measured values of the different pressure/temperature sensor and temperature sensor when operating the A/C system, and replace the components with incorrect measured values. Use the Vehicle Diagnostic Tester in the"Guided Fault Finding"
function. Refer to Component Location Overview - A/C System
.-- Check the function and activation of the various valves installed in the refrigerant circuit via the pressure distribution in the refrigerant circuit. Use the Vehicle Diagnostic Tester in the"Guided Fault Finding"
function. Refer to Refrigerant Circuit
.-- Check the function and activation of the components for cooling the high-voltage components. Use Vehicle Diagnostic Tester in the"Guided Fault Finding"
for the air conditioner, the A/C Compressor and the Battery Regulation.-- Depending on the result, service the activation or a faulty component (shut-off valve, expansion valve, coolant pump, coolant shut-off valve). Refer to Refrigerant Circuit
and COOLANT CIRCUIT
.-- Check the refrigerant circuit lines, if they are kinked or constricted replace the hose or pipe of this component.-- If no malfunction can be determined clean the refrigerant circuit (flush with refrigerant R1234yf). Refer to REFRIGERANT CIRCUIT, CLEANING
. |