AIR CONDITIONING – Chevrolet Impala LS 2003 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Compressor Wiring Diagram for Chevrolet Impala LS 2003

List of elements for Compressor Wiring Diagram for Chevrolet Impala LS 2003:

• +5v reference
• A/c compressor clutch
• A/c compressor relay
• A/c press signal
• A/c refrigerent pressure sensor (left side of engine compt, on liquid line)
• A/c rly fuse 10a
• Comp control
• Computer data lines system
• E11
• F11
• G113 (3.8l) g117 (3.4l) (on transaxle stud, near starter)
• Hot at all times
• Hot in run
• Low reference
• Nca
• Pnk
• Powertrain control module (left front side of engine compt, in air cleaner assembly)
• S158
• Serial data
• Underhood junction block (bottom) (forward of right front strut tower)
• Underhood junction block (top) (forward of right front strut tower)

Manual A/C Wiring Diagram for Chevrolet Impala LS 2003

List of elements for Manual A/C Wiring Diagram for Chevrolet Impala LS 2003:

• (forward lamp harn, near right headlamp)
• (fuel inj jumper harn, midway between fuel inj no 3 breakout and (map) sensor breakout)
• (fwd lamp harn, 18.5 cm from g101 breakout)
• (i/p harn, 8 cm from ignition sw breakout) s229
• (left side of heater-a/c assembly) air temperature actuator (left)
• (under center of dash)
• (under left side of dash) splice pack sp205
• +5v reference
• 3.4l
• 3.8l
• A/c blo fuse 20a
• A/c blo fuse 25a
• A/c compressor clutch
• A/c compressor clutch diode (in wiring harn, 10 cm from a/c compressor clutch)
• A/c compressor relay
• A/c cruise fuse 10a
• A/c press signal
• A/c refrigerent pressure sensor (left side of engine compt, on liquid line)
• A/c request
• A/c request sig
• A/c rly fuse 10a
• Air temperature actuator (right) (right side of heater-a/c assembly)
• B10
• Battery
• Blower motor
• Blower motor relay
• Blower motor resistor assembly (on hvac module, below blower motor)
• Body control module (behind left side of dash)
• C1 f6
• C10
• Comp control
• D4 c1
• Data link connector (under dash, right side of steering column)
• Defog rly ctrl
• Defogger system
• Dic/ rke fuse 10a
• E11
• Ect ground
• Ect signal
• Engine controls (map sensor)
• Engine coolant temperature (ect) sensor (left rear of engine)
• F11
• F5 c1
• Fan cont 1 fuse 25a
• Fan cont 2 & 3 fuse 25a
• Fan control 1 relay
• Fan control 2 relay
• Fan control 3 relay
• G101 (top left front of radiator support)
• G113 (3.8l) g117 (3.4l) (on transaxle stud, near starter)
• G201 (right side of steering column)
• G202
• G202 (under center of dash)
• Gnd
• High speed
• Hot at all times
• Hot in run
• Hvac control module
• I/p junction block (left) (behind left side of dash)
• I/p junction block (right) (behind right side of dash)
• I/p lamp sply volt
• Ign
• Ign 3 volt
• Interior lights system
• Left cooling fan
• Lft temp dr ctrl
• Low reference
• Low speed
• Nca
• Nca nca
• Off
• Off blwr mtr ctrl
• Pnk
• Pos
• Powertrain control module (left front side of engine compt, in air cleaner assembly)
• Right cooling fan
• Rt temp dr ctrl
• S121
• S148
• S158
• S175
• S216
• Serial data
• Tan
• Underhood junction block (bottom) (right side of engine compt, forward of strut tower)
• Underhood junction block (top) (forward of right front strut tower)