ENGINE PERFORMANCE – Chevrolet Astro 2005 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L VIN X

4.3L VIN X, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Astro 2005

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Astro 2005:

• (under left side of dash) data link connector
• 3-2 ss
• Battery
• Body control module (above radio)
• Brake sw
• Central sequential fuel injection (top of engine)
• Ckp +12v
• Ckp low ref
• Ckp sig
• Cls 2 data
• Cmp low ref
• Cmp sig
• Crankshaft position sensor (behind & to right of engine crankshaft pulley)
• Ecm-b fuse 20a
• Ecm-i fuse 20a
• Ect +5v
• Ect low ref
• Engine coolant temperature sensor (on left side of left cylinder head)
• Ftp sens +5v
• G105 (on thermostat housing)
• G106 (on left rear of engine, next to knock sensor)
• Ground
• Ho2s 1, 1 hi
• Ho2s 1, 1 lo
• Ho2s 1, 2 hi
• Ho2s 1, 2 lo
• Ho2s 2, 1 hi
• Ho2s 2, 1 lo
• Hot at all times
• Hot in run & start
• I/p fuse block (behind left side of dash)
• I/p harness, behind data link connector)
• Ignition
• Injector 1
• Injector 2
• Injector 3
• Injector 4
• Injector 5
• Injector 6
• Knock sensor (at left rear of distributor, on engine block)
• Ks return
• Ks sig
• Map +5v
• Map low ref
• Pnk
• Powertrain control module (below underhood fuse block, on left side of firewall)
• Prnd a
• Prnd b
• Prnd p
• Range b
• Range c
• Red
• S109
• S115
• S116
• S123
• S127
• S155
• Sens low ref
• Sp261 (strapped to
• Tan
• Tft low ref
• Tps +5v
• Tps low ref
• Trans fuse 20 10a
• Underhood fuse block (left side of engine compt)

4.3L VIN X, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Astro 2005

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Astro 2005:

• (in engine harness, 9 cm
• (in fuel tank) fuel pump & sender assembly
• (inside fuel tank) fuel tank pressure sensor
• (left side of engine compt) underhood fuse block
• (not used)
• Camshaft position sensor (on side of distributor)
• Eng-1 fuse 20a
• From a/c low-pressure cut-off switch breakout)
• Fuel pump relay
• G104 (on lower left side of evaporative housing, behind receiver drier)
• G105 (in thermostat housing)
• G302 (on underbody, front side of fuel tank)
• Heated oxygen sensor (bank 1 sensor 1) (left front exhaust y-pipe)
• Heated oxygen sensor (bank 1 sensor 2) (on exhaust pipe, between catalytic muffler & converter)
• Heated oxygen sensor (bank 2 sensor 1) (right front exhaust y-pipe closed to exhaust manifold)
• Hot in run & start
• Nca
• Park/ neutral position switch (left center of trans)
• Pnk
• Red
• S111
• S117
• S119
• S308
• Tan
• Throttle position sensor (left side of throttle body)
• Underhood fuse block (left side of engine compt)

4.3L VIN X, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Astro 2005

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Astro 2005:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A/t fluid pressure manual valve position switch
• Anti-lock brakes system
• Automatic transaxle
• Brake fuse 18 10a
• Evaporative emission canister purge solenoid (top of engine, next to map sensor)
• Evaporative emission canister vent valve (underside of vehicle, near fuel filter)
• G105 (in thermostat housing)
• Hot in run
• I/p fuse block (behind left side of dash)
• Manifold absolute pressure sensor (top of engine, near ignition coil)
• Mass airflow sensor (front of air intake duct)
• Pc sol valve
• Pnk
• Pnk a
• Red
• Rev
• S112 (engine harn 15 cm from underhood fuse block breakout)
• S117
• S135
• Stop- lamp switch (above brake pedal)
• Tan
• Tcc pmw sol
• Tcc sol
• Tft sensor

4.3L VIN X, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Astro 2005

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Astro 2005:

• (on thermostat housing) g105
• 1-2 ss
• 2-3 ss
• A/c clu
• A/c req
• Air conditioning system
• Anti-lock brakes system
• Cmp +12v
• Coil driver
• Coil wire
• Cruise control system
• Cruise control system (speed signal)
• Cruise eng
• Cyc sw in
• Distributor
• Evap purge
• Evap vent
• Ftp sens sig
• Fuel lev
• Fuel pmp
• G106 (on left rear of engine, next to knock sensor)
• G107 (on left rear of engine, next to knock sensor)
• Gen f duty sig
• Gen l
• Gnd
• Ground
• Ho2s 1, 1 htr
• Ho2s 1, 2 htr
• Ho2s 2, 1 htr
• Hot at all times
• I/p fuse block (behind left side of dash)
• Iac coil a hi
• Iac coil a lo
• Iac coil b hi
• Iac coil b lo
• Iat low ref
• Iat sig
• Ic timing ctrl
• Idle air control valve (left rear of throttle body)
• Ign
• Ignition coil (on top of engine, behind generator)
• Ignition control module (top of engine, front of coil)
• Instrument panel cluster
• Intake air temperature sensor (top of air intake duct)
• Logic
• Maf sens sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Pc sol hi
• Pc sol lo
• Pnk
• Powertrain control module (below underhood fuse block, on left side of firewall)
• Prnd c
• Radio batt fuse 19 10a
• Red
• S117
• S127
• S155
• Starting/charging system
• Tan
• Tcc pwm
• Tcc sol
• Tft sens sig
• Timing
• Tp sig
• Trans rng a
• Vehicle speed sensor (rear of transmission)
• Vss high
• Vss low
• Vss out