Heating, air conditioning

Chapter overview

• Heating
  1
• 1 Heating
  1
• 1.1 Repairing heating system
  1
• 1.2 Removing fresh air blower V2
  3
• 1.3 Removing controls for fresh and heated air
  3
• 1.4 Removing side window vent
  3
• 1.5 Removing driver or front passenger vent
  3
• 1.6 Removing centre vents
  5
• 1.7 Removing and installing dust and pollen filter, vehicles 10.00 ▸
  5
• 1.8 Checking ventilation
  6
• 1.9 Checking auxiliary air heater element Z35
  7
• 1.10 Removing auxiliary heating heater element contact switch F268
  10
• 2 Dismantling and assembling heater unit
  13
• 2.1 Dismantling and assembling heater unit
  13
• 2.2 Installing and adjusting lever for centre flap
  14
• 2.4 Removing auxiliary air heater element Z35
  14
• 2.5 Removing and installing heater unit
  15
• 2.6 Removing coolant hoses to heat exchanger
  17
• 2.7 Removing and installing heat exchanger
  17
• 3 Dismantling and assembling heated air and fresh air controls
  19
• 4 Installing and adjusting cables
  20
• 4.1 Installing and adjusting cables on heater
  21
• Supplementary heating
  22
• 1 Glow plugs - supplementary heating
  22
• 1.1 Glow plugs - supplementary heating in cooling system circuit
  22
• Air conditioning system
  23
• 2 Temperature measurement
  24
• 3 Air conditioning system with manual controls
  26
• 3.1 Air conditioning and heating - passenger compartment
  26
• 3.2 Renewing fresh air blower series resistor with overheating fuse N24
  29
• 3.3 Removing and installing fresh air blower V2
  29
• 3.5 Removing and installing water drain funnel
  30
• 3.7 Removing and installing heating and air conditioning controls
  31
• 3.8 Dismantling and assembling heating and air conditioning controls
  32
• 3.9 Installing heating and air conditioning cables
  34
• 3.10 Removing and installing temperature flap cable and central flap cable
  35
• 3.11 Air conditioning and heating system - engine compartment
  35
• 3.12 Checking water drain valve
  37
• 3.13 Renewing air conditioning system pressure switch F129 , Vehicles ▸ 09.00
  38
• 3.15 Repairing Zexel air conditioner magnetic clutch N25
  38
• 3.16 Repairing Denso magnetic clutch for air conditioning system N25
  42
• 4 Climatronic air conditioning with automatic regulation
  47
• 4.1 Procedure for checking and adjusting components
  47
• 4.2 Function of operating and display unit for Climatronic air conditioning system E87
  47
• 4.3 Connectors on Climatronic control unit J255
  49
• 4.4 Climatronic - passenger compartment
  52
• 4.5 Removing and installing footwell vent temperature sender G192
  56
• 4.6 Removing and installing glove box cooling vent
  57
• 4.7 Removing and installing centre vent temperature sender G191
  57
• 4.8 Removing sunlight penetration photosensor G107
  58
• 4.10 Removing fresh air blower V2 with fresh air blower control unit J126
  59
• 4.11 Removing fresh air blower control unit J126 from fresh air blower V2
  59
• 4.12 Renewing control motors for air conditioning regulation
  60
• 4.13 Removing and installing air flow flap control motor V71 **
  60
• 4.14 Removing and installing temperature flap control motor V68 **
  61
• 4.15 Removing and installing central flap control motor V70 **
  62
• 4.16 Removing and installing footwell and defroster flap control motor V85 **
  63
• 4.17 Climatronic - engine compartment
  63
• 5 Bracket for air conditioner compressor
  67
• 5.4 Removing and installing poly V-belt for air conditioner compressor
  72
• 5.5 Removing and installing air conditioner compressor bracket, engine codes AGZ and AZX
  73
• 5.9 Removing and installing air conditioner compressor bracket, engine codes BDN and BDP
  85
• 6.1 Repairing components of refrigerant circuit, vehicles ▸ 09.00
  92
• 6.2 Repairing components of refrigerant circuit, vehicles 10.00 ▸
  96
• 6.3 Removing evacuating and charging valve, low-pressure side
  99
• 6.4 Removing evacuation and charging valve, high-pressure side
  100
• 6.5 Tasks of reservoir
  102
• 6.6 Checking excess pressure relief valve on compressor
  102
• 6.7 Notes on installing air conditioner compressor, engine codes BDN and BDP
  103
• 6.8 Overview - air conditioner compressor manufacturers
  104
• 6.9 Removing and installing restrictor, function of restrictor
  105
• 6.10 Removing and installing condenser
  106
• 6.11 Removing and installing distribution box and evaporator housing
  108
• 6.12 Dismantling and assembling distribution box and housing
  110
• 7 Capacities
  113
• 7.1 Refrigerant R134a
  113
• 7.2 Refrigerant oil
  113