Components Outside of Passenger Compartment, Group 2
Components Outside of Passenger Compartment, Group 2
1 Coolant Fan (V7)
• Different versions of the Coolant Fan (V7) and Coolant Fan 2 (V177) are installed depending on vehicle equipment. Refer to Electronic Parts Catalog (ETKA).
• The request to switch on the Coolant Fan is sent by the Climatronic control module (J255) via the databus to the engine control module. The engine control module controls the (coolant fan and coolant fan 2) directly or by the Coolant fan control module (J293).
• Check the radiator fan control by the Climatronic control module using the Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding".
• The respective engine control modules switches, for example, the Coolant Fan and Coolant Fan 2 (directly via the Coolant Fan Control Control Module (J293) ) continuously to the desired output (depending on engine type). Check using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" and.
2 High Pressure Sensor (G65)
• Function, removing and installing, refer to => [ High Pressure Sensor (G65) ] Service and Repair.
• The High Pressure Sensor measured value is displayed in"Read measured value block" by the Climatronic control module (J255). Refer to => [ High Pressure Sensor (G65), Checking Pressure Signal ] High Pressure Sensor (G65), Checking Pressure Signal and Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding".
3 High Pressure Side Service Connection
• Cap with seal, always install.
• Depending on engine version, it may be necessary to remove some components (for example, EVAP canister) in order to be able to connect to service coupling.
4 Low Pressure Side Service Connection
• Cap with seal, always install.
• Depending on engine version, it may be necessary to remove some components (for example, EVAP canister) in order to be able to connect to service coupling.
5 Fresh Air Intake Cover
• Check the bonded seal for damage and proper seating. This seal prevents water from entering between window crossmember and cover and running into A/C unit air intake shroud.
• Removing and installing, refer to=> [ Fresh Air Intake Cover ] Fresh Air Intake Cover and
6 Intake Grille For Fresh Air Intake
• Check for proper seating, prevents foreign objects (such as leaves) entering the A/C intake housing.
• Check the bonded seal for damage and proper seating. This seal prevents water from flowing through beneath the intake grille into heating & A/C unit intake housing.
• Removing and installing, refer to => [ Fresh Air Intake Cover ] Fresh Air Intake Cover.
7 Condensation Drain
• Checking, removing and installing, refer to=> [ Condensation Water Drain Hose, Checking ] Testing and Inspection.
8 Expansion Valve
• Refrigerant lines, disconnecting and reconnecting, refer to=> [ Refrigerant Lines, Disconnecting and Connecting From Expansion Valve ] Refrigerant Lines, Disconnecting and Connecting From Expansion Valve.
• Removing and installing, refer to=> [ Expansion Valve ] Expansion Valve.
• On this vehicle, it may take awhile until the pressure on the high pressure side comes down after the A/C compressor is switched off. The expansion valve is cold and the pressure on the low pressure side increases quickly after switching off, the expansion valve closes and the refrigerant can flow slowly on the low pressure side.
9 Coolant Fan 2 (V177)
• Different versions of the coolant fan (V7) and coolant fan 2 (V177) are installed, depending on vehicle equipment. Refer to the => [ (Item 1) ] and Electronic Parts Catalog (ETKA).
• Additional information on function and activation=> [ (Item 1) ].