AIR CONDITIONING – Chevrolet Astro 1998 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

A/C Wiring Diagram for Chevrolet Astro 1998

List of elements for A/C Wiring Diagram for Chevrolet Astro 1998:

• (eng harn, 5 cm from underhood fuse-relay center breakout)
• (right side of dash)
• A/c clutch diode (in underhood fuse-relay center)
• A/c comp mini fuse 10a
• A/c compressor clutch
• A/c enable
• A/c enable relay (in underhood fuse-relay center)
• A/c high pressure cut off switch (rear of a/c compressor)
• A/c low pressure cut off switch (top of a/c receiver dryer)
• A/c maxi fuse m3 30a
• A/c request
• B red
• Bi-lv
• Blend
• Blower motor resistor and relay pack (mounted on right front of dash housing, between evaporator and front blower motor)
• C218
• C219
• Convenience center
• Def
• Front blower motor
• G109 (right radiator support)
• G201
• G201 (right side of dash)
• G402 (below rear a/c blower)
• G409 (above rear heater)
• G901 (right front "a" pillar)
• Heat
• Heater and a/c control valve solenoid (behind receiver/ dryer)
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 12 20a
• Hvac control module
• I/p fuse block
• Ign-e mini fuse 10a
• Interior lights system
• Max
• Med
• Norm
• Off
• Pnk
• Rear a/c blower motor
• Rear a/c resistor pack (above rear blower motor, in duct)
• Rear a/c switch
• Rear heat-a/c relay (in underhood fuse-relay center)
• Rear heater blower motor
• Rear heater resistor pack (top rear heater core assembly)
• Rear heater switch
• Red
• Rr heat/a/c maxi fuse 30a
• S111
• S111 (eng harn, 17 cm from underhood fuse-relay center breakout)
• S111 (eng harn, 5 cm from underhood fuse-relay center breakout)
• S124 (engine harn, 13 cm from oil pressure switch breakout)
• S224 (i/p harness, 17 cm from headlamp switch connector breakout)
• S229 (i/p harn, 4 cm from temperature control motor connector breakout)
• S238 (i/p harn, behind left side of dash)
• Tan
• Temperature control motor (behind right side of dash, left side of air duct)
• Underhood fuse-relay center
• Vehicle control module (left side of engine compt)
• Vent

Compressor Wiring Diagram for Chevrolet Astro 1998

List of elements for Compressor Wiring Diagram for Chevrolet Astro 1998:

• (behind center of dash) g202
• (front center of dash) ambient light sunload sensor
• (hvac harness, below center of i/p) j271
• (rear of engine compt) air quality sensor
• (right front corner of engine compt) g104
• 5-volt ref
• 5v ref
• A/c compressor solenoid valve (left front of engine)
• Air quality sens sig
• Air recirculation door motor (on hvac module, above blower motor)
• Air temp dr ctrl
• Air temperature door actuator (left side of hvac module)
• B+ blwr mtr fan rly x2
• Batt +
• Blower motor (under right side of dash)
• Blower motor control module (on hvac module, left of blower motor)
• Blwr mtr spd ctrl
• Blwr mtr spd rly
• Computer data lines system
• Defogger system
• Ele varbl displment ctrl
• Ele varbl displment sply
• Evap core temp sens sig
• Fuse 10a
• Fuse 15a
• Fuse 30a
• Fuse 40a
• Fuse 5a
• G202 (behind center of dash)
• Gnd
• Gnd b+ x1
• Hot at all times
• Hot in on or start
• Humidity sens sig
• Humidity temp sens sig
• Hvac control module (center of dash)
• Ign volt
• Inside air temp sens sig
• Instrument panel fuse block (behind left end of dash)
• Logic
• Low ref
• Low spd gmlan ser data
• Mode door actuator (left side of hvac module)
• Mode dr stepper mtr ctrl
• Network bus 9
• Power distribution system
• Rear defog rly ctrl
• Recirculation dr ctrl
• Red
• Sens low ref
• Solar sens drv sig
• Solar sens pul sply volt
• Underhood fuse block (in engine compt, next to left strut tower)
• Upp lh air temp sens sig
• Upper air temp sens sig
• Windscreen temp sens sig
• Windshield temperature & inside moisture sensor (top center of windshield)
• X100
• X110
• X200
• X210

Heater Wiring Diagram for Chevrolet Astro 1998

List of elements for Heater Wiring Diagram for Chevrolet Astro 1998:

• (in body harness, attached to lower left "b" pillar) splice block jx347
• (in chassis harness, 15 cm from coolant heater breakout) j119
• (in rear hvac harness, 13 cm from auxiliary blower motor connector breakout)
• (in rear hvac harness, 20 cm from auxiliary blower motor connector breakout)
• 12v ref
• 5v ref
• A/c
• Air temperature actuator (behind right side of dash, on hvac)
• Auxiliary blower motor (if equipped) (on auxiliary hvac)
• Auxiliary blower motor high speed relay (if equipped) (left rear of passenger compt, attached to hvac module)
• Auxiliary blower motor low speed relay (if equipped) (left rear of passenger compt, attached to auxiliary hvac module)
• Auxiliary blower motor medium speed relay (if equipped) (left rear of passenger compt, attached to auxiliary hvac module)
• Auxiliary blower motor resistor assembly (if equipped) (on auxiliary heater motor)
• Auxiliary blower motor switch (if equipped)
• Bi-lev
• Blower motor (on right rear of engine compt, on evaporator case)
• Blower motor relay
• Blower motor resistor assembly (at right rear of engine compt, on evaporator case)
• Body control module (bcm) (behind lower right side of dash)
• Body fuse block (under left front seat) c8
• Computer data lines system
• Coolant heater (6.6l w/ auxiliary fuel fired heater) (attached to the left front inner frame rail)
• Coolant heater air temperature sensor
• Coolant heater blower motor
• Coolant heater combustion sensor
• Coolant heater control module
• Coolant heater fuel pump (attached to left inner frame rail, near fuel pump assembly)
• Coolant heater glow plug
• Coolant heater overheat temperature sensor
• Coolant heater temperature sensor
• Def
• Electronic brake control module (ebcm) (on left frame rail, near center of vehicle)
• Floor
• Foh mdl (d) fuse 35 15a
• Frt blwr fuse 74 40a
• Fuel pump
• G102 (6.6l: left front lower side of the engine block) (4.8l, 5.3l & 6.0l: on left rear of engine) (4.3l: right rear of engine)
• G102 (left front lower side of engine block)
• G304 (behind right kick panel)
• G347
• G400 (on inner left rear frame rail)
• G402 (on top of
• Gnd
• Hot at all times
• Hot w/ run relay k1 energized
• Hvac 1 fuse 14 20a
• Hvac 2 fuse 13 10a
• Hvac control assembly
• Interior
• Interior lights system
• J102
• J249
• J401
• J402
• J405
• J412
• J413 (in rear hvac harness, 24 cm from auxiliary blower motor breakout)
• Left "d" pillar)
• Lights system
• Logic
• Low ref
• Max a/c
• Med
• Mix-blend
• Off
• Rear blwr fuse 29 30a
• Red
• Ser data
• Serial +
• Serial -
• Tan
• Underhood fuse block (on left side of engine compt)
• Vacuum pump (6.6l) (right front of engine compt, under battery)
• Vent
• Volt
• W/ auxiliary fuel fired heater
• W/o auxiliary fuel fired heater
• X100
• X101