AIR CONDITIONING – Chevrolet S10 Pickup 2003 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Heater Wiring Diagram for Chevrolet S10 Pickup 2003

List of elements for Heater Wiring Diagram for Chevrolet S10 Pickup 2003:

• (behind right side of dash) g203
• (behind upper left end of dash) g200
• (left rear of engine compartment) g117
• (not used)
• 87a
• Air temperature actuator (behind right side of dash, on heater case)
• Bi-level
• Blend
• Blower motor (on right rear of engine compartment)
• Blower motor relay (on center rear of engine compartment)
• Blower motor resistor (on right rear of engine compartment, on blower module)
• Blower switch
• D (not used)
• D12
• Defrost
• Heat
• Heater controller
• High
• Hot at all times
• Hot in park & head
• Hot in run
• Hvac 1 fuse 21 10a
• Hvac fuse 30a
• Hvac fuse 9 20a
• I/p fuse block (on left end of dash)
• Illum (x4)
• Illum fuse 12 10a
• Low
• Med
• Mode door switch
• Off
• S118 (body harness, between breakouts to blower motor & blower motor relay)
• S215
• Servo amplifier
• Sp202 (strapped to body harness, at left center of dash)
• Sp203 (dash harness, in front of ashtray)
• Tan
• Temp control
• Underhood fuse block (on top of left front inner wheelwell)
• Vent

2.2L VIN H

2.2L VIN H, Compressor Wiring Diagram for Chevrolet S10 Pickup 2003

List of elements for 2.2L VIN H, Compressor Wiring Diagram for Chevrolet S10 Pickup 2003:

• (right front of engine block, under generator) g102
• 5 volt reference
• A/c
• A/c comp rly ctrl
• A/c compressor clutch
• A/c compressor clutch diode
• A/c compressor clutch relay
• A/c fuse 10a
• A/c pressure signal
• A/c refrigerant pressure sensor (on a/c evaporator tube)
• A/c request signal
• Bi-level a/c
• Blend
• C2 a
• D12
• Defrost
• Heat
• Heater & a/c controller
• Hot at all times
• Hot in run
• Hot in run & start
• Hvac fuse 9 20a
• I/p fuse block (on left end of dash)
• Ign e fuse 10a
• Max a/c
• Nca
• Off
• Powertrain control module (pcm) (on right side of engine compartment)
• S103 (engine harness, 19.5 cm from throttle position sensor)
• Sensor ground
• Underhood fuse block (on top of left front inner wheelwell)
• Vent

2.2L VIN H, Manual A/C Wiring Diagram for Chevrolet S10 Pickup 2003

List of elements for 2.2L VIN H, Manual A/C Wiring Diagram for Chevrolet S10 Pickup 2003:

• (behind right side of dash) g203
• (behind upper left end of dash) g200
• (dash harness, between breakouts for radio & bcm connector, 8 cm from breakout to radio) s205
• (left rear of engine compartment) g117
• (right front of engine block, under generator) g102
• 0.26 ohms
• 0.71 ohms
• 2.10 ohms
• 5v reference
• 87a
• A/c
• A/c comp relay ctrl
• A/c compressor clutch
• A/c compressor clutch diode
• A/c compressor clutch relay
• A/c fuse 10a
• A/c press sens sig
• A/c refrigerant pressure sensor (on a/c evaporator tube)
• A/c request signal
• Air temperature actuator (behind right side of dash, on heater case)
• Bi-level
• Bi-level a/c
• Blend
• Blower motor (on right rear of engine compartment)
• Blower motor relay (on center rear of engine compartment)
• Blower motor resistor (on right rear of engine compartment, on blower module)
• Blower switch
• Connector) s104
• D (not used)
• D12
• Def
• Heat
• Heater & a/c controller
• High
• Hot at all times
• Hot in park & head
• Hot in run
• Hot in run & start
• Hvac 1 fuse 21 10a
• Hvac fuse 30a
• Hvac fuse 9 20a
• I/p fuse block (on left end of dash)
• Ign e fuse 10a
• Illum (x4)
• Illum fuse 12 10a
• Low
• Max a/c
• Med
• Mode door switch
• Nca
• Norm
• Off
• Powertrain control module (pcm) (on right side of engine compartment)
• S118 (body harn, between breakouts to blower motor & blower motor relay)
• S215
• S217 (dash harness, in breakout to heater controller connectors, 6 cm into breakout)
• Sensor gnd
• Servo amplifier
• Sp202 (strapped to body harness, at left center of dash)
• Sp203 (dash harness, in front of ashtray)
• Tan
• Temp control
• Underhood fuse block (on top of left front inner wheelwell)
• Vent

4.3L VIN W

4.3L VIN W, Compressor Wiring Diagram for Chevrolet S10 Pickup 2003

List of elements for 4.3L VIN W, Compressor Wiring Diagram for Chevrolet S10 Pickup 2003:

• (engine harness, between breakouts to rear heated oxygen sensors connector & body harness connector, 7 cm from breakout to heated oxygen sensor connector) s106
• (right rear of cylinder head) g102
• (right rear of cylinder head) g103
• A/c
• A/c comp rly ctrl
• A/c compresor clutch
• A/c compressor clutch diode
• A/c compressor clutch relay
• A/c compressor high pressure switch (on rear of a/c compressor)
• A/c fuse 10a
• A/c low pressure switch (at a/c accumulator)
• A/c low sw signal
• A/c request signal
• Bi-level a/c
• Blend
• D12
• Defrost
• Heat
• Heater & a/c controller
• Hot at all times
• Hot in run
• Hot in run & start
• Hvac fuse 9 20a
• I/p fuse block (on left end of dash)
• Ign e fuse 10a
• Max a/c
• Nca
• Off
• Powertrain control module (pcm) (on right side of engine compartment)
• S103 (engine harn, 19.5 cm from throttle position sensor)
• Underhood fuse block (on top of left front inner wheelwell)
• Vent

4.3L VIN W, Manual A/C Wiring Diagram for Chevrolet S10 Pickup 2003

List of elements for 4.3L VIN W, Manual A/C Wiring Diagram for Chevrolet S10 Pickup 2003:

• (behind right side of dash) g203
• (behind upper left end of dash) g200
• (dash harness, between breakouts for radio & bcm connector 8 cm from breakout to radio) s205
• (engine harness, between breakouts to rear heated oxygen sensors connector & body harness connector, 7 cm from breakout to heated oxygen sensor connector) s106
• (left rear of engine compartment) g117
• (right rear of cylinder head) g102
• (right rear of cylinder head) g103
• 87a
• A/c
• A/c comp rly ctrl
• A/c compressor clutch
• A/c compressor clutch diode
• A/c compressor clutch relay
• A/c compressor high pressure switch (on rear of a/c compressor)
• A/c cycling sw signal
• A/c fuse 10a
• A/c low pressure switch (at a/c accumulator)
• A/c request signal
• Air temperature actuator (behind right side of dash, on heater case)
• Bi-level
• Bi-level a/c
• Blend
• Blower motor (on right rear of engine compartment)
• Blower motor relay (on center rear of engine compartment)
• Blower motor resistor (on right rear of engine compartment, on blower module)
• Blower switch
• Connector) s104
• D (not used)
• D12
• Def
• Heat
• Heater & a/c controller
• High
• Hot at all times
• Hot in park & head
• Hot in run
• Hot in run & start
• Hvac 1 fuse 21 10a
• Hvac fuse 30a
• Hvac fuse 9 20a
• I/p fuse block (on left end of dash)
• If equipped
• Ign e fuse 10a
• Illum (x4)
• Illum fuse 12 10a
• Low
• Max a/c
• Med
• Mode door switch
• Nca
• Norm
• Off
• Pickup
• Power mirrors system (automatic day/night mirror)
• Powertrain control module (pcm) (on right side of engine compartment)
• S103 (engine harn, 19.5 cm from throttle position sensor)
• S118 (body harness, between breakouts to blower motor & blower motor relay)
• S215
• S217 (dash harness, in breakout to heater controller connectors, 6 cm into breakout)
• Servo amplifier
• Sp202 (strapped to body harness, at left center of dash)
• Sp203 (dash harness, in front of ashtray)
• Tan
• Temp control
• Underhood fuse block (on top of left front inner wheelwell)
• Utility
• Vent

4.3L VIN X

4.3L VIN X, Compressor Wiring Diagram for Chevrolet S10 Pickup 2003

List of elements for 4.3L VIN X, Compressor Wiring Diagram for Chevrolet S10 Pickup 2003:

• (engine harness, between breakouts to rear heated oxygen sensors connector & body harness connector, 7 cm from breakout to heated oxygen sensor connector) s106
• (right rear of cylinder head) g102
• (right rear of cylinder head) g103
• A/c
• A/c comp rly ctrl
• A/c compresor clutch
• A/c compressor clutch diode
• A/c compressor clutch relay
• A/c compressor high pressure switch (on rear of a/c compressor)
• A/c fuse 10a
• A/c low pressure switch (at a/c accumulator)
• A/c low sw signal
• A/c request signal
• Bi-level a/c
• Blend
• D12
• Defrost
• Heat
• Heater & a/c controller
• Hot at all times
• Hot in run
• Hot in run & start
• Hvac fuse 9 20a
• I/p fuse block (on left end of dash)
• Ign e fuse 10a
• Max a/c
• Nca
• Off
• Powertrain control module (pcm) (on right side of engine compartment)
• S103 (engine harn, 19.5 cm from throttle position sensor)
• Underhood fuse block (on top of left front inner wheelwell)
• Vent

4.3L VIN X, Manual A/C Wiring Diagram for Chevrolet S10 Pickup 2003

List of elements for 4.3L VIN X, Manual A/C Wiring Diagram for Chevrolet S10 Pickup 2003:

• (behind right side of dash) g203
• (behind upper left end of dash) g200
• (dash harness, between breakouts for radio & bcm connector 8 cm from breakout to radio) s205
• (engine harness, between breakouts to rear heated oxygen sensors connector & body harness connector, 7 cm from breakout to heated oxygen sensor connector) s106
• (left rear of engine compartment) g117
• (right rear of cylinder head) g102
• (right rear of cylinder head) g103
• 87a
• A/c
• A/c comp rly ctrl
• A/c compressor clutch
• A/c compressor clutch diode
• A/c compressor clutch relay
• A/c compressor high pressure switch (on rear of a/c compressor)
• A/c cycling sw signal
• A/c fuse 10a
• A/c low pressure switch (at a/c accumulator)
• A/c request signal
• Air temperature actuator (behind right side of dash, on heater case)
• Bi-level
• Bi-level a/c
• Blend
• Blower motor (on right rear of engine compartment)
• Blower motor relay (on center rear of engine compartment)
• Blower motor resistor (on right rear of engine compartment, on blower module)
• Blower switch
• Connector) s104
• D (not used)
• D12
• Def
• Heat
• Heater & a/c controller
• High
• Hot at all times
• Hot in park & head
• Hot in run
• Hot in run & start
• Hvac 1 fuse 21 10a
• Hvac fuse 30a
• Hvac fuse 9 20a
• I/p fuse block (on left end of dash)
• If equipped
• Ign e fuse 10a
• Illum (x4)
• Illum fuse 12 10a
• Low
• Max a/c
• Med
• Mode door switch
• Nca
• Norm
• Off
• Pickup
• Power mirrors system (automatic day/night mirror)
• Powertrain control module (pcm) (on right side of engine compartment)
• S103 (engine harn, 19.5 cm from throttle position sensor)
• S118 (body harness, between breakouts to blower motor & blower motor relay)
• S215
• S217 (dash harness, in breakout to heater controller connectors, 6 cm into breakout)
• Servo amplifier
• Sp202 (strapped to body harness, at left center of dash)
• Sp203 (dash harness, in front of ashtray)
• Tan
• Temp control
• Underhood fuse block (on top of left front inner wheelwell)
• Utility
• Vent