ENGINE PERFORMANCE – Chevrolet Astro 2001 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L

4.3L VIN W, Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Astro 2001

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Astro 2001:

• (behind and to the right of pulley) crankshaft position sensor
• (under left side of dash) data link connector
• +5v
• 3-2 ss
• Body control module (above radio)
• Brk sw
• Ckp
• Cls 2 data
• Cmp
• Ecm-b fuse 20a
• Ecm-i fuse 20a
• Ect sig
• Egr input
• G125 (in thermostat housing)
• Gnd
• Ho2s hi
• Ho2s lo
• Hot at all times
• Hot in run & start
• Ign
• Inj1
• Inj2
• Inj3
• Inj4
• Inj5
• Inj6
• Injectors
• Nca
• Pnk
• Pnk b
• Pnk d
• Pnk e
• Pnk h
• Pnk j
• Pnk l
• Powertrain control module (left side of engine compt)
• Prnd a
• Prnd b
• Prnd p
• Range b
• Range c
• Red
• Ref low
• S109
• S116
• S123
• S155
• Sens gnd
• Sp261 (behind data link connector)
• Tan
• Underhood fuse block

4.3L VIN W, Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Astro 2001

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Astro 2001:

• (center of dash)
• (engine harn, 6 cm from generator breakout)
• (engine harn, 6 cm from vss breakout)
• (in engine harn, near fuel pump breakout)
• (not used)
• Eng-1 fuse 20a
• Engine coolant temperature sensor (on side of egr valve)
• Fuel pump and sender assembly (in fuel tank)
• Fuel pump relay
• G114 (left rear of engine)
• G125 (in thermostat housing)
• G206
• G206 (center of dash)
• Heated oxygen sensor (bank 1 sensor 1) (left front exhaust y-pipe)
• Heated oxygen sensor (bank 1 sensor 2) (on exh, between converter & muffler)
• Heated oxygen sensor (bank 2 sensor 1) (right front exhaust y-pipe near manifold)
• Hot in run & start
• Knock sensor (left rear of distributor)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S117
• S119
• S124
• S126
• S127
• S154
• S262
• Tan
• Throttle position sensor (left side of throttle body)
• Underhood fuse block

4.3L VIN W, Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Astro 2001

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Astro 2001:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Air temperature sensor (top of air intake duct)
• Automatic transaxle
• B red
• Brake fuse 18 10a
• Camshaft position sensor (top center rear of engine)
• Evap canister purge solenoid (top right rear of engine)
• Evap canister vent valve (left front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• Fuel tank pressure sensor (in fuel tank)
• G114 (left rear of engine)
• G125 (in thermostat housing)
• Gnd
• Hot in off run & start
• Hot in run
• I/p fuse block
• Ign
• Intake
• Manifold absolute pressure sensor (top rear of engine)
• Mass airflow sensor (in air intake duct)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Pnk c
• Red
• Red e
• Red/
• Rev
• S112 (engine harn 15 cm from fuse block breakout)
• S115
• S117
• S127
• Signal
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tan b
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Trans fuse 20 10a
• Vehicle speed sensor (left rear of transmission)

4.3L VIN W, Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Astro 2001

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Astro 2001:

• 1-2 ss
• 2-3 ss
• A/c clu
• A/c req
• A/c system
• Anti-lock brake system (speed signal)
• Coil driver
• Coil wire
• Cruise control system
• Cruise control system (speed signal)
• Cruise eng
• Cyc sw in
• Distributor
• Egr ctrl
• Egr gnd
• Evap canp
• Evap vent
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• G114 (left rear of engine)
• G125 (in thermostat housing)
• Gen f
• Gen l
• Gnd
• Hot at all times
• I/p fuse block
• Iac coil hi
• Iac coil lo
• Iat sig
• Ic timing ctrl
• Idle air control valve (left rear of throttle body)
• Ign
• Ign feed
• Ignition coil
• Ignition control module (top of engine) front of coil)
• Instrument panel cluster
• Logic
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Pc sol hi
• Pc sol lo
• Pnk
• Pnk a
• Powertrain control module (left side of engine compt)
• Prnd c
• Radio batt fuse 19 10a
• Recirc door
• Recirc sw
• Red
• S155
• S177
• Sens gnd
• Starting/charging system
• Tan
• Tcc pwm
• Tcc sol
• Tft sens sig
• Timing
• Tp sig
• Trans rng a
• Vss high
• Vss low
• Vss out