AIR CONDITIONING – Dodge Sprinter 2500 2003 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 2) for Dodge Sprinter 2500 2003

List of elements for Automatic A/C Wiring Diagram (1 of 2) for Dodge Sprinter 2500 2003:

• (behind center of dash) s218
• (behind left side of dash) g203
• (left rear of engine compt) g200
• (rest system)
• 0 off 1 low 2 med-low 3 med-high 4 high
• 5v ref
• A/c aux fan rly ctrl
• A/c auxiliary fan relay (in relay block)
• A/c comp clutch (+)
• A/c compressor clutch
• Air outlet temperature sensor (right rear of engine compt)
• Aot sens sig
• Automatic temperature control module
• Auxiliary heater timer
• Blower motor resistor block (right rear of engine compt)
• C2 c2
• Cabin heater assembly
• Can c bus (+)
• Can c bus (-)
• Circ pmp mtr (+)
• Circ pmp mtr req
• Circulation pump (front of engine compt)
• Computer data lines system
• D+ rly 1 output
• Evap temp sen sig
• Evaporator temperature sensor (under right side of dash)
• Fuse 15a
• Fuse 30a
• Fuse block 1 (under steering column)
• Fuse/ relay block
• G202 (under driver's seat)
• Gnd
• Hot at all times
• Htr booster mode
• Htr booster mode ctrl
• Ic 18-c2 to atcm 8-c1
• Interior lights system
• K-ic/atc/hbm/chm
• Lamp driver
• Nca
• Recirc air sol vlv (+)
• Red
• Refrig press sen sig
• Refrigerant pressure sensor (left front of engine compt)
• S201 (behind center of dash)
• S201 com cir
• S209
• S223
• Sens gnd
• Sig
• W/ program timer
• W/o program timer
• Wtr cycl vlv (duty cycl)

Automatic A/C Wiring Diagram (2 of 2) for Dodge Sprinter 2500 2003

List of elements for Automatic A/C Wiring Diagram (2 of 2) for Dodge Sprinter 2500 2003:

• (in engine compt) a/c auxiliary fan
• (in engine compt) water cycle valve
• (left rear of engine compt) g200
• 87a
• Amb temp sens rtn
• Amb temp sens sig (+)
• Ambient temperature sensor (under left side of dash)
• Cabin heater assembly
• Computer data lines system
• D+ relay 1 (in relay block
• D+ rly 1 ctrl
• Fan stage 1 relay (relay block)
• Fan stg 1 rly
• Front blower motor (right side of engine compt)
• Fuse 10a
• Fuse 125a
• Fuse 15a
• Fuse block 2 (under steering column)
• Fuse block 3
• G102 (right front of engine compt)
• G200 (left rear of engine compt)
• G202 (under driver's seat)
• Hot at all times
• Ic 18-c2 to atcm 8-c1
• Instrument cluster
• Nca
• Power distribution center (left side of engine compt)
• Recirculated air solenoid valve (right side of engine compt)
• Red
• S100
• S231
• S232
• S310 (behind center of dash)
• S350 (near trailer tow connector)

Auxiliary Blower Wiring Diagram for Dodge Sprinter 2500 2003

List of elements for Auxiliary Blower Wiring Diagram for Dodge Sprinter 2500 2003:

• (behind left side of dash) g203
• (not used)
• (top right rear of vehicle) g301
• 12v a/c fan high
• 12v a/c fan low
• Fuse 10a
• Fuse 15a
• Fuse block 2 (under driver's seat)
• Fuse block 3
• Fuse/ relay block (under driver's seat)
• Ground
• Hot at all times
• Hot w/ d+ relay 1 energized
• Hot w/ optional equipment relay energized
• Interior lights system
• Nca
• Red
• Roof a/c control module (in dash)
• Roof a/c switch
• Roof a/c temperature setting control
• Roof fan motor (in headliner)
• Roof fan switch
• S256 (behind center of dash)
• S310
• S365 (behind center of dash)
• Temp sw sens
• Temp sw sig

Auxiliary Heater Wiring Diagram (1 of 3) for Dodge Sprinter 2500 2003

List of elements for Auxiliary Heater Wiring Diagram (1 of 3) for Dodge Sprinter 2500 2003:

• (under dash) metering pump
• A rest system
• Aux htr sw (+)
• Auxiliary heater timer
• B cabin heater module
• C w/ program timer
• Cabin heater assembly
• Cabin htr ctrl
• Circ pmp mtr req
• Circ pmp mtr rly hi ctrl
• Computer data lines system
• D w/o program timer
• Dosing pump ctrl
• Fan stage 1 rly hi ctrl
• Fuse 25a
• Fuse 7.5a
• Fuse block 3
• G100 (right front of engine compt)
• G202 (under driver's seat)
• G203 (behind left side of dash)
• Gnd
• Ground
• Heater timer control module
• Hot at all times
• Htr booster mode ctrl
• Htr timer
• Htr timer (cut-in sig)
• Interior lights system
• K-ctm/ssm
• K-ic/atc/hbm/chm
• Metering pump
• Nca
• Otp equip rly out
• Red
• S201 com circt
• S211
• Security system module
• Warm air aux htr ctrl
• Warm air auxiliary heater assembly

Auxiliary Heater Wiring Diagram (2 of 3) for Dodge Sprinter 2500 2003

List of elements for Auxiliary Heater Wiring Diagram (2 of 3) for Dodge Sprinter 2500 2003:

• (not used)
• Additional heat exchanger
• Additional heat exchanger relay (relay block)
• Additional heat exchanger switch
• Controller anti-lock brake (left side of engine compt)
• Fuse 25a
• Fuse block 3
• G202 (under driver's seat)
• G203 (behind left side of dash)
• Hot at all times
• Interior lights system
• S201 (behind center of dash)
• Tcs sw (asr) sens
• Tcs switch (asr)

Auxiliary Heater Wiring Diagram (3 of 3) for Dodge Sprinter 2500 2003

List of elements for Auxiliary Heater Wiring Diagram (3 of 3) for Dodge Sprinter 2500 2003:

• (not used)
• 87a
• Automatic temperature control module
• Auxiliary heater switch
• B cabin heater module
• Blwr mtr sel 1
• Circ pmp mtr req
• Circulation pump (cabin heater module) (front of engine compt)
• Circulation pump diode
• Circulation pump relay (relay block)
• D w/o program timer
• Dosing pump
• Fan stage 1 relay (relay block)
• Fuse 10a
• Fuse 15a
• Fuse 20a
• Fuse 70a
• Fuse block 1 (under steering column)
• Fuse block 3
• G100 (right front of engine compt)
• G200 (left rear of engine compt)
• G202 (under driver's
• G202 (under driver's seat)
• G203 (behind left side of dash)
• Hot at all times
• Hot in run and start
• Htr bstr mode ctrl
• Interior lights system
• Optional equipment relay (in relay) block
• Power distribution center (left side of engine compt)
• Red
• S201 com circt
• S206
• S223
• S252
• S311 (under driver's seat)
• S327 (near security system module)
• S362