AIR CONDITIONING – Mercedes-Benz GL550 2011 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram, with Thermotronic (1 of 4) for Mercedes-Benz GL550 2011

List of elements for Automatic A/C Wiring Diagram, with Thermotronic (1 of 4) for Mercedes-Benz GL550 2011:

• (+)
• (at right kick panel) w29/2
• (not used)
• (not used) x122/3-c1
• (not used) x18
• 3.0l turbo
• A/c air recirculation unit
• Air recirculation switch
• Anst
• Battery compartment prefuse box (ml-class: under right front seat) (gl-class: behind right front seat)
• Blower motor
• Blower regulator
• Booster blower electronic blower controller (on booster blower motor)
• Booster blower motor (under rear of center console)
• C10a
• C12a
• C78
• C91
• Can-b h
• Can-b l
• Center rear interior temperature sensor (under right rear of center floor console)
• Cockpit fuse box (behind right end of dash)
• Comfort aac (kla) control & operating unit
• Computer data lines system
• Coolant circulation pump (in left front wheelwell)
• Dew point sensor (gl-class: under right side of dash) (ml-class: under right side of dash, near blower motor)
• Diag
• Except 3.0l turbo
• Fresh air & air recirculation flap actuator motor (ml-class: on hvac unit) (gl-class: right side of fresh air housing)
• Fuse 10a
• Fuse 150a
• Fuse 15a
• Fuse 40a
• Gnd
• Hot at all times
• Krv
• Lin
• Nca
• Pnk
• Red
• Refrigerant compressor
• Sig
• W/ heated windshield
• W29/2 (at right kick panel)
• W9 (left side of engine compt)
• Wake up
• X122/2-c1
• X122/2-c2
• X122/4
• X18
• X18-c2
• X18/7
• X25/2 d7
• X25/2-c1
• X25/2-c2
• X26-c2
• Zwp

Automatic A/C Wiring Diagram, with Thermotronic (2 of 4) for Mercedes-Benz GL550 2011

List of elements for Automatic A/C Wiring Diagram, with Thermotronic (2 of 4) for Mercedes-Benz GL550 2011:

• (not used)
• (not used) x122/1
• Front prefuse (right rear of engine compt)
• Fuse 100a
• Hot at all times
• Left blending air flap actuator (ml-class: on hvac unit) (gl-class: left side of a/c unit)
• Left center air flap actuator motor (ml-class: on hvac unit) (gl-class: left side of a/c unit)
• Left center outlet temperature sensor (behind center of dash)
• Left defroster vent flap actuator motor (ml-class: on hvac unit) (gl-class: left side of fresh air housing)
• Left footwell flap actuator motor (ml-class: on hvac unit) (gl-class: left side of a/c unit)
• Left footwell temperature sensor (ml-class: under left center of dash) (gl-class: left side of hvac unit)
• Left side outlet temperature sensor (gl-class: behind left side of dash) (ml-class: under left side of dash)
• Nca
• Pnk
• Ptc heater booster (if equipped)
• Rear air distribution flap actuator motor (ml-class: on hvac unit) (gl-class: on booster blower assembly)
• Red
• Right blending air flap actuator (ml-class: on hvac unit) (gl-class: right side of a/c unit)
• Right center air flap actuator motor (ml-class: on hvac unit) (gl-class: right side of a/c unit)
• Right center outlet temperature sensor (behind center of dash)
• Right defroster vent flap actuator motor (ml-class: on hvac unit) (gl-class: right side of fresh air housing)
• Right footwell flap actuator motor (ml-class: on hvac unit) (gl-class: right side of fresh air housing)
• Right side outlet temperature sensor (gl-class: behind right side of dash) (ml-class: under right side of dash)
• W52/7
• X122/1
• X122/2
• X122/2-c1

Automatic A/C Wiring Diagram, with Thermotronic (3 of 4) for Mercedes-Benz GL550 2011

List of elements for Automatic A/C Wiring Diagram, with Thermotronic (3 of 4) for Mercedes-Benz GL550 2011:

• (-) (or kts-s) (or senm3)
• (or lues)
• 3.0l turbo
• 3.5l hybrid
• 5.5l, 3.5l, 4.6l & 3.5l hybrid
• Akf
• Can-c h
• Can-c l
• Cdi control module (3.0l turbo) me-sfi (me) control module (except 3.0l turbo) (gl-class 3.0l: right rear of engine compt) (gl-class except 3.0l: center rear of engine) (ml-class except 3.0l: top center of engine) (ml-class 3.0l: right front fender)
• Circuit 31 left wheelhouse luggage compartment voltage distributor connector
• Computer data lines system
• Coolant temperature sensor (3.0l: top left side of engine) (ml-class except 3.0l: left rear of engine) (gl-class except 3.0l: rear of left cylinder bank)
• Dual sun sensor (top center of dash)
• Emissions sensor (right rear corner of engine compt)
• Engine controls system
• Evaporator temperature sensor (under center of dash)
• Except 3.0l turbo
• Fuse 25a
• Ger
• Gl-class: on rear a/c unit) (ml-class: left side of cargo area) rear air conditioning coolant shutoff motor
• Hav
• Hot at all times
• Load compartment fuse & relay box (right rear of cargo area)
• Ms2
• Nca
• Rear air conditioning blower motor (gl-class: on rear a/c unit) (ml-class: left side of cargo area)
• Rear air conditioning blower regulator (on rear blower motor)
• Red
• Refrigerant pressure sensor (in left front wheelwell)
• Right footwell temperature sensor (ml-class: under right center of dash) (gl-class: right side of hvac unit)
• Tmot
• W6 (gl-class: at left "d" pillar) (ml-class: behind trim, left rear of cargo area)
• X122/3-c1
• X122/3-c2

Automatic A/C Wiring Diagram, with Thermotronic (4 of 4) for Mercedes-Benz GL550 2011

List of elements for Automatic A/C Wiring Diagram, with Thermotronic (4 of 4) for Mercedes-Benz GL550 2011:

• (in right front wheelwell) w2/1
• (in right rear wheelwell) (3.5l, 4.6l & 5.5l) activated charcoal filter shutoff valve
• (ml-class: behind radiator) (gl-class: center front of engine compt) electric suction fan engine & a/c w/ integrated control
• (ml-class: lower left front of engine) electric refrigerant compressor control unit
• (ml-class: right front of engine) (gl-class: top right front of engine) air pump switch over valve
• (top left rear of engine) heating system shutoff valve
• (top of left "c" pillar) (if equipped) rear headroom ac temperature sensor
• 288v+
• 288v-
• 3.5l hybrid
• C124
• Can-c h
• Can-c l
• Computer data lines system
• Dc/dc converter control unit (ml-class: right side of engine compt)
• Electrohydraulic power steering
• Engine compartment fuse & relay box (right side of engine compt)
• Engine compartment fuse & relay box 2
• Engine controls system
• Except 3.5l hybrid
• Fuse 15a
• Fuse 7.5a
• Fuse c 7.5a
• High voltage battery module (ml-class: front of cargo area)
• High voltage distribution module (ml-class: right side of engine compt)
• Hot in on or start
• Hot w/ engine circuit 87 relay energized
• Hvil+
• Hvil-
• Hybrid vehicle fully integrated transmission control controller unit (ml-class: in transmission)
• Mr1
• Nca
• Outside temperature display temperature sensor
• Pnk
• Pnk/red
• Power electronics control unit (ml-class: left side of engine compt)
• Rear air conditioning evaporator temperature sensor (gl-class: left side of cargo area) (ml-class: on rear hvac unit)
• Red
• Shield
• W9 (left side of engine compt)
• X122/3-c1
• X18
• X212
• X22/6-c1
• X25/2-c1
• X26/32

Automatic A/C Wiring Diagram, without Thermotronic (1 of 3) for Mercedes-Benz GL550 2011

List of elements for Automatic A/C Wiring Diagram, without Thermotronic (1 of 3) for Mercedes-Benz GL550 2011:

• (2 to 5 pins not used)
• (9 to 12 pins not used)
• (ml-class: behind left front fender) high voltage battery cooling system shutoff valve
• (ml-class: under right center of dash) right footwell temperature sensor
• 3.0l turbo
• 3.5l hybrid
• A/c recirculation unit
• Aac (kla) control & operating unit
• Ac-chiller
• Ac-evaporator
• Air recirculation switch
• Batt
• Battery compartment prefuse box (ml-class: under right front seat) (gl-class: behind right front seat)
• Blower motor
• Blower regulator
• C12a
• C78
• C91
• Can-b h
• Can-b l
• Cockpit fuse box (behind right end of dash)
• Computer data lines system
• Coolant circulation pump (in left front wheelwell)
• Evaporator temperature sensor (under center of dash)
• Except 3.0l turbo
• Fresh air & air recirculation flap actuator motor (ml-class: on hvac unit) (gl-class: right side of fresh air housing)
• Front evaporator shutoff valve (ml-class: left rear of engine compt)
• Fuse 150a
• Fuse 15a
• Fuse 40a
• Gnd
• Hot at all times
• Krv
• Left defroster vent flap actuator motor (ml-class: on hvac unit) (gl-class: left side of fresh air housing)
• Lin
• Nca
• Outside temperature display temperature sensor
• Pnk
• Red
• Refrigerant compressor
• Refrigerant pressure sensor (in left front wheelwell)
• Right blending air flap actuator (ml-class: on hvac unit) (gl-class: right side of a/c unit)
• Sig
• W29/2 (at right kick panel)
• W9 (left side of engine compt)
• Wake up
• X122/4
• X18
• X18-c2
• X18/7
• X25/2-c1
• X25/2-c2
• X26-c2
• X26/32
• X4/50
• X4/51
• Zwp

Automatic A/C Wiring Diagram, without Thermotronic (2 of 3) for Mercedes-Benz GL550 2011

List of elements for Automatic A/C Wiring Diagram, without Thermotronic (2 of 3) for Mercedes-Benz GL550 2011:

• (-) (or kts-s) (or senm3)
• (behind center of dash) right center outlet temperature sensor
• (gl-class: behind left side of dash) (ml-class: under left side of dash) left side outlet temperature sensor
• (not used)
• (not used) x122/4
• (or lues)
• 3.0l turbo
• 3.0l turbo 5.5l, 3.5l, 4.6l & 3.5l hybrid
• 3.5l hybrid
• Air pump switch over valve (ml-class: right front of engine) (gl-class: top right front of engine)
• Akf
• Can-c h
• Can-c l
• Cdi control module (3.0l turbo) me-sfi (me) control unit (except 3.0l turbo) (gl-class except 3.0l: center rear of engine) (ml-class except 3.0l: top center of engine) (gl-class 3.0l: right rear of engine compt) (ml-class 3.0l: right front fender)
• Computer data lines system
• Coolant temperature sensor (3.0l: top left side of engine) (ml-class except 3.0l: left rear of engine) (gl-class except 3.0l: rear of left cylinder bank)
• Engine controls system
• Except 3.0l turbo
• Ger
• Hav
• Heating system shutoff valve (top left rear of engine)
• Left blending air flap actuator (ml-class: on hvac unit) (gl-class: left side of a/c unit)
• Left center air flap actuator motor (ml-class: on hvac unit) (gl-class: left side of a/c unit)
• Left center outlet temperature sensor (behind center of dash)
• Left footwell flap actuator motor (ml-class: on hvac unit) (gl-class: left side of a/c unit)
• Left footwell temperature sensor (ml-class: under left center of dash) (gl-class: left side of hvac unit)
• Nca
• Pnk
• Ptc heater booster (if equipped)
• Rear air distribution flap actuator motor (ml-class: on hvac unit) (gl-class: on booster blower assembly)
• Red
• Right side outlet temperature sensor (gl-class: behind right side of dash) (ml-class: under right side of dash)
• Tmot
• W52/7
• X122/1
• X122/2-c1

Automatic A/C Wiring Diagram, without Thermotronic (3 of 3) for Mercedes-Benz GL550 2011

List of elements for Automatic A/C Wiring Diagram, without Thermotronic (3 of 3) for Mercedes-Benz GL550 2011:

• (left side of engine compt) w9
• 288v+
• 288v-
• 3.5l hybrid
• Activated charcoal filter shutoff valve (3.5l, 4.6l & 5.5l) (in right rear wheelwell)
• C124
• Can-c h
• Can-c l
• Center rear interior temperature sensor (ml-class: under right rear of center floor console) (gl-class: under rear of center console)
• Computer data lines system
• Dc/dc converter control unit (ml-class: right side of engine compt)
• Electric refrigerant compressor control unit (ml-class: lower left front of engine)
• Electric suction fan engine & a/c w/ integrated control (ml-class: behind radiator) (gl-class: center front of engine compt)
• Electrohydraulic power steering
• Engine compartment fuse & relay box (right side of engine compt)
• Engine compartment fuse & relay box 2
• Except 3.5l hybrid
• Front prefuse (right rear of engine compt)
• Fuse 100a
• Fuse 15a
• Fuse 7.5a
• Fuse c 7.5a
• High voltage battery module
• High voltage distribution module (ml-class: right side of engine compt)
• Hot at all times
• Hot in on or start
• Hot w/ engine circuit 87 relay energized
• Hvil+
• Hvil-
• Hybrid vehicle fully integrated transmission control controller unit
• Mr1
• Nca
• Pnk
• Pnk/red
• Power electronics control unit (ml-class: left side of engine compt)
• Red
• Shield
• Sun sensor (top center of dash)
• W2/1 (in right front wheelwell)
• W29/2 (at right kick panel)
• X122/2-c1
• X212
• X22/6-c1
• X25/2-c1