Heating, air conditioner

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety measures when working on vehicles with a start/stop system
  1
• 2 General information
  2
• 2.1 Notes concerning odours in air conditioned vehicles
  2
• 2.2 Notes for vehicles with start-stop system
  2
• 3 Repair instructions
  4
• 3.1 Checking cooling output
  4
• 3.2 Opening refrigerant circuit
  5
• 4 Technical data
  6
• 4.1 Capacities for refrigerant R134a
  6
• 4.2 Refrigerant oil
  6
• 4.3 Oil distribution
  7
• Heating
  8
• 1 Overview of fitting locations - heating
  8
• 2 Heater
  10
• 2.1 Assembly overview – heater unit
  10
• 2.2 Removing and installing fresh air blower V2
  11
• 2.3 Removing and installing fresh air blower series resistor with overheating fuse N24
  11
• 2.4 Removing and installing dust and pollen filter
  12
• 2.5 Removing and installing heat exchanger
  12
• 2.6 Removing and installing heater unit
  15
• 2.7 Dismantling and assembling heater unit
  20
• 3 Control motors
  21
• 3.1 Removing and installing air recirculation flap control motor V113
  21
• 3.2 Removing and installing air distribution flap actuator
  21
• 3.3 Removing and installing temperature flap actuator
  22
• 4 Air duct
  23
• 4.2 Removing right/left and centre vents in dash panel
  23
• 4.3 Removing and installing footwell vents
  24
• 4.4 Removing and installing vents of right and left rear footwell air ducts
  25
• 4.5 Removing and installing air distribution housing
  26
• 4.6 Checking ventilation
  27
• 4.7 Removing and installing air intake grille
  27
• 5 Operating and display unit
  28
• 5.1 Removing and installing operating and display unit
  28
• 5.2 Multi-pin connector pin assignment on back of operating and display unit
  29
• 5.3 Removing and installing flexible shaft, checking
  29
• 5.4 Removing and installing Bowden cable for temperature flap
  30
• 6 Other controlling and regulating components
  32
• 6.1 Removing and installing ambient temperature sensor G17
  32
• Air conditioning system
  33
• 1 Overview of fitting locations - air conditioning system
  33
• 1.1 Overview of fitting locations - components not located in passenger compartment
  33
• 2 Refrigerant circuit
  43
• 2.1 General notes on the refrigerant circuit
  43
• 2.2 Assembly overview - condenser
  44
• 2.3 Renewing refrigerant line between air conditioner compressor and condenser
  46
• 2.4 Renewing refrigerant line between condenser and expansion valve
  47
• 2.6 Renewing bracket of refrigerant lines
  51
• 2.7 Removing and installing high-pressure sender G65
  52
• 2.8 Removing and installing expansion valve
  53
• 2.9 Removing and installing evacuating and charging valves on low and high-pressure side
  55
• 2.10 Removing and installing receiver with dryer, Caddy ►2011
  56
• 2.11 Renewing desiccant bag for condenser, Caddy 2011 ►
  59
• 2.12 Removing and installing condenser
  61
• 2.13 When is it necessary to purge the refrigerant circuit with refrigerant
  65
• 3 Air conditioner compressor
  67
• 3.1 Assembly overview - drive unit of air conditioner compressor
  67
• 3.2 Assembly overview - air conditioning system magnetic clutch, Sanden
  68
• 3.3 Removing and installing air conditioner compressor
  69
• 3.4 Checking high-pressure safety valve on air conditioner compressor, Denso
  77
• 3.5 Checking high-pressure safety valve on air conditioner compressor, Sanden
  78
• 3.6 Notes on installing air conditioner compressor
  78
• 3.7 Repairing air conditioning system magnetic clutch, Sanden
  79
• 4 Control motors
  83
• 4.1 Removing and installing temperature flap control motor V68
  83
• 4.2 Removing and installing centre flap control motor V70
  85
• 4.3 Removing and installing defroster flap control motor V107
  86
• 4.4 Removing and installing air recirculation flap control motor V113
  87
• 4.5 Removing and installing left temperature flap control motor V158
  88
• 4.6 Removing and installing right temperature flap control motor V159
  90
• 4.7 Removing and installing fresh air/recirculated air, air flow flap control motor V425
  91
• 4.9 Removing and installing front air distribution flap control motor V426
  93
• 5 Front heater and air conditioning unit
  94
• 5.1 Assembly overview – heater and air conditioning unit
  94
• 5.2 Assembly overview – evaporator housing
  97
• 5.3 Removing and installing heater and air conditioning unit
  98
• 5.4 Dismantling and assembling heater and air conditioning unit
  106
• 5.6 Removing and installing evaporator
  110
• 5.7 Checking condensation drain
  111
• 5.8 Removing and installing baffle plate
  112
• 5.9 Removing and installing fresh air blower control unit J126
  112
• 6 Operating and display unit
  113
• 6.1 Overview of fitting locations – operating and display unit
  113
• 7 Other controlling and regulating components
  125
• 7.1 Removing and installing sunlight penetration photosensor G107
  125
• 7.2 Removing and installing photo sensor 2 for sunlight penetration G134
  126
• 7.3 Principle of operation of air quality sensor G238
  126
• 7.4 Removing and installing air quality sensor G238
  127
• 7.5 Removing and installing left vent temperature sender G150
  128
• 7.6 Removing and installing right vent temperature sender G151
  128
• 7.7 Removing and installing centre vent temperature sender G191
  128
• 7.8 Removing and installing footwell vent temperature sender G192
  129
• 7.9 Removing and installing left footwell vent temperature sender G261
  129
• 7.10 Removing and installing right footwell vent temperature sender G262
  130
• 8 Removing and installing bracket for ancillaries
  131
• 8.1 Removing and installing ancillary bracket, Caddy 2011►
  131
• 8.2 Removing and installing ancillary bracket, engine codes: BCA, BUD
  131
• 8.3 Removing and installing ancillary bracket, engine codes: BDJ, BJB, BLS, BMM, BST, BSU
  134
• 8.4 Removing and installing ancillary bracket, engine codes: BGU, BSE, BSF, BSX
  137