Climatronic Components In Engine Compartment, Servicing

Climatronic Components In Engine Compartment, Servicing


CAUTION!
- Before working on the electrical system, obtain radio security code and disconnect battery Ground (GND) strap.
- When reconnecting battery, always check operation of vehicle equipment such as radio, clock, and power windows.


NOTE:
- System components identified with an * must only be serviced or replaced after discharging refrigerant system. Use Kent Moore ACR4 or equivalent.
- Illustration shows vehicle with engine code AHA.







1 - Accumulator*
2 - Refrigerant hose*
- Between evaporator and accumulator
3 - Refrigerant hose*
- Between evaporator and condenser
4 - Low pressure service valve*
5 - High pressure service valve*
6 - Dust and pollen filter
7 - Evaporator*
- In passenger compartment
8 - Evaporator water drain valve
9 - Pressure relief valve*
10 - Compressor*
11 - A/C clutch -N25-
12 - Condenser*
13 - Outside air temperature sensor -G17-
- Function: Temperature sensor controls temperature flap and fresh air blower speed dependant of temperature measurement.
- In event of sensor malfunction, fresh air intake duct temperature sensor -G89- measurement value is used instead. If both sensors malfunction, operation continues with default value of 10 °C (50 °F). Air recirculation not possible. A/C control head -E87- display indicates: "-"
14 - A/C pressure switch -F129-
Function:
- Switches coolant fan -V7- to next highest speed when pressure increases in refrigerant circuit.
- Switches off A/C clutch -N25- when refrigerant pressure is excessive (e.g.: insufficient engine cooling).
- Switches off A/C clutch -N25- when refrigerant pressure is too low (e.g.: refrigerant loss).
- Tightening torque 8 Nm (71 in lb)
- Always replace O ring (note Part No.).
15 - Refrigerant hose*
- Between compressor and evaporator.
16 - Refrigerant hose*
- Between compressor and accumulator.