AIR CONDITIONING – Mercedes-Benz S420 1997 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Front A/C Wiring Diagram (1 of 2) for Mercedes-Benz S420 1997

List of elements for Front A/C Wiring Diagram (1 of 2) for Mercedes-Benz S420 1997:

• c22
• c28
• (behind instrument cluster) g202
• 12v
• 15x
• 58d
• A/c compressor
• A/c pushbutton control module
• Akf+
• Akf-
• Blower motor
• Can a
• Can b
• Data link connector (dlc) (dtc readout) (partial) (on right side of engine compartment)
• Diagn
• Dza
• Exterior lights system
• Fuse 15a
• Fuse 20a
• Fuse 7.5a
• Fuse box (on left rear corner of engine compartment)
• Hot at all times
• Hot in run
• Hot in run or start
• Hs on-off
• If equipped
• In-car temperature sensor (in dome light assembly)
• Instrument cluster system
• Led hs
• Left duovalve
• Left heater core temperature sensor (behind center of dashboard, below radio)
• Maxi- fuse 30a
• Md led+
• Md led-
• Md wik
• Nca
• Pse control module (behind right side of rear seat)
• Rear a/c pushbutton control module
• Refrigerant pressure sensor (in left front corner of engine compartment)
• Refrigerant temperature sensor (in left front corner of engine compartment)
• Right duovalve
• Right heater core temperature sensor (behind center of dashboard, below radio)
• Sen sens
• Sun sensor (top center of dash)
• Tfl
• Tfr

Front A/C Wiring Diagram (2 of 2) for Mercedes-Benz S420 1997

List of elements for Front A/C Wiring Diagram (2 of 2) for Mercedes-Benz S420 1997:

• (at left headlamp unit) g106 g107 (at right headlamp unit)
• (behind instrument cluster) g202
• (center of firewall) g121
• (right footwell) g201
• A/c system blower unit
• Activated charcoal filter actuator
• Air control module (on left front of engine compartment, on frame rail)
• Blower motor
• Blower regulator
• Cool
• Cool indicator led
• Emissions sensor (center of firewall)
• Evaporator temperature sensor (on left side of evaporator housing, above accelerator pedal)
• Hot at all times
• Illumination
• Interior lights system
• Left auxiliary fan (on front of engine compartment)
• Nca
• Note: components may be grounded at either g106 (left headlamp unit) or g107 (right headlamp unit)
• Red
• Right auxiliary fan (on front of engine compartment)
• Switchover valve block
• Terminal block x4 (left rear corner of engine compartment)
• Warm
• Warm indicator led
• Warm/cool air switch (heating systems)

Rear A/C Wiring Diagram for Mercedes-Benz S420 1997

List of elements for Rear A/C Wiring Diagram for Mercedes-Benz S420 1997:

• (center console) g302
• 58d
• C 1995 vftc
• Can a
• Can b
• Coolant circulation pump
• Front a/c circuit
• Ftx
• Fuse 1 15a
• Hot in run or start
• Interior lights system
• Left duovalve
• Left rear heater core temperature sensor (in rear of center console)
• Nca
• R12
• Rear a/c electronic blower regulator
• Rear a/c pushbutton control module
• Rear blower motor (below center console)
• Rear evaporator temperature sensor (in rear of center console)
• Rear fuse box (in luggage compartment, behind right trim panel)
• Rear refrigerant shut off valve
• Rear tunnel flap vacuum valve
• Red
• Right duovalve
• Right rear heater core temperature sensor (in rear of center console)