AIR CONDITIONING – Buick Century 2003 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Compressor Wiring Diagram for Buick Century 2003

List of elements for Compressor Wiring Diagram for Buick Century 2003:

• (i/p harn, 18 cm from radio breakout)
• (i/p harn, right side of steering column, 19 cm from radio breakout)
• (lower left front of engine) g113
• (w/ auto a/c)
• (w/ manual a/c)
• 5 volt ref
• A/c clu diode
• A/c clutch fuse 23 10a
• A/c clutch relay 15
• A/c compressor clutch
• A/c press signal
• A/c refrigerent pressure sensor (left front strut tower, on a/c liquid line)
• A/c request
• Auto a/c
• Battery
• C11
• C12
• Class 2 ser data
• Clutch request
• Clutch rly ctrl
• D12
• Engine controls system
• G200 (behind right side of dash)
• Ground
• Hot at all times
• Hot in run
• Hvac control module
• Hvac fuse 10a
• I/p fuse block (behind right side of dash)
• Ign main relay (closed in run or start)
• Ignition
• Low ref
• Manual a/c
• Powertrain control module (left front side of engine compt, in air cleaner assembly)
• Rdo, hvac, rfa clstr, cel tel fuse 10a
• S105 (engine harn, front of engine compt, 4 cm from c105 breakout)
• S167 (engine harn, 4 cm from pcm breakout)
• S202
• S230
• S233 (i/p harn, behind center of dash, 4 cm from radio breakout)
• Serial data
• Sp205 (behind data link connector)
• Underhood fuse block (right side of engine compt)

Manual A/C Wiring Diagram for Buick Century 2003

List of elements for Manual A/C Wiring Diagram for Buick Century 2003:

• (behind right side of dash) g200
• (cool fan jumper harn, 19 cm from right conn to cooling fan motor)
• (cooling fan jumper harn, 19.5 cm from right conn to cooling fan motor)
• (cooling fan jumper harn, 20 cm from left conn to cooling fan motor)
• (engine harn, front of engine compt, 4 cm from c105 breakout)
• (engine harn, left side of engine compt, 4 cm from pcm breakout)
• (fuel inj jumper harn, midway between fuel inj no 3 breakout & map sensor breakout)
• (i/p harn, 18 cm from radio breakout)
• (i/p harn, behind center of dash, 4 cm from radio breakout)
• (left side of hvac module) left air temperature actuator
• (top left side of engine, below throttle body)
• +5v reference
• 3.1l
• 3.8l
• A/c compressor clutch
• A/c clu diode
• A/c clutch fuse 23 10a
• A/c clutch relay 15
• A/c press signal
• A/c refrigerent pressure sensor (at left front strut tower, on a/c liquid line)
• A/c request sig
• A10
• A11
• Battery
• Blower motor (behind right side of dash, in hvac module)
• Blower motor resistor assembly (under right side of dash, right side of hvac module)
• C11
• Clutch request
• Comp control
• Cool fan 1 fuse 15a
• Cool fan 2 fuse 15a
• Cool fan 1 relay
• Cool fan 2 relay
• Cool fan 3 relay
• Defogger on
• Defogger system
• Drvr temp ctrl
• E10
• Ect ground
• Ect signal
• Engine controls system
• Engine coolant temperature (ect) sensor
• F12
• Fan off input
• G113 (lower
• G200 (behind right side of dash)
• Gnd
• Ground
• High blower fuse 30a
• High blower relay
• High speed
• Hot at all times
• Hot in run
• Hvac control module
• Hvac fuse 10a
• I/p fuse block (behind right side of dash)
• Ign
• Ign main relay (closed in run or start)
• Ignition
• Interior lights
• Interior lights system
• Lamp dim sig
• Left cooling fan
• Left cooling fan diode (3.1l)
• Left front of engine)
• Low blower fuse 20a
• Low reference
• Low speed
• Nca
• Nca nca
• Off
• Pass temp ctrl
• Pos
• Powertrain control module (pcm) (left front side of engine compt, in air cleaner assembly)
• Rdo, hvac, rfa clstr, cel tel fuse 10a
• Right air temperature actuator (right side of hvac module)
• Right cooling fan
• Right cooling fan diode (3.1l)
• S101
• S102
• S103
• S104
• S105
• S121
• S167
• S230
• S233
• Tan
• Underhood fuse block (right side of engine compt, mounted to strut tower)