ENGINE PERFORMANCE – Chevrolet Astro 1996 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L

4.3L (VIN W), Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Astro 1996

List of elements for 4.3L (VIN W), Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Astro 1996:

• 1-2 shift sol. ctrl
• 2-3 shift sol. ctrl
• 3-2 ctrl sol. ctrl
• A/c comp rly ctrl
• A/c enable relay
• Cam posit sens rtn
• Cam posit sens sig
• Camshaft position sensor (side of distributor)
• Coil
• Crank posit sens sig
• Crankshaft position sensor (behind right side of engine crankshaft pulley)
• Ect sens input
• Egr posit input
• Evap sol purge ctrl
• Evaporative emissions (evap) canister purge solenoid valve (top of engine, next to map sensor)
• G114 (left rear of engine block, next to knock sensor)
• G201 (right side of dash, above blower motor)
• Hall effect sensor
• Heated oxygen sensor no.1 (right front exhaust y-pipe closest to exhaust manifold)
• Heated oxygen sensor no.2 (left front exhaust y-pipe)
• Heated oxygen sensor no.3 (right front exhaust y-pipe closest to catalytic converter)
• Iat temp sens sig
• Idle air control valve motor (top of engine, left rear of throttle body)
• Idle air ctrl (iac) a hi
• Idle air ctrl (iac) b lo
• Inj no.1 ctrl
• Inj no.2 ctrl
• Inj no.3 ctrl
• Inj no.4 ctrl
• Inj no.5 ctrl
• Inj no.6 ctrl
• Knock sens sig
• Knock sensor (left rear of distributor on engine block)
• Left sens hi
• Left sens lo
• Map sens input
• Mass air flow sens
• Nca
• Pnk
• Pnk c
• Post-catalyst sens hi
• Post-catalyst sens lo
• Power
• Pre-catalyst sens hi
• Pre-catalyst sens lo
• Right sens hi
• Right sens lo
• Sensor ground
• Tan
• Tcc on/off sol. ctrl
• Tcc pwm sol ctrl
• Throttle posit sens
• Trans temp sens sig
• Underhood fuse-relay center (left front side of dash, near battery)
• Vehicle control module (vcm) (left side of engine compartment, side of battery)
• Vehicle spd sense sig
• Vehicle speed sensor (rear of transmission)
• Vss rtn
• Vss signal

4.3L (VIN W), Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Astro 1996

List of elements for 4.3L (VIN W), Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Astro 1996:

• 1-2 shift sol.
• 2-3 shift sol.
• 3-2 control sol.
• Automatic transmission
• Ecm-1 mini fuse f7 20a
• Eng-1 mini fuse f7 20a
• Force motor
• Fuel inj. no.1
• Fuel inj. no.2
• Fuel inj. no.3
• Fuel inj. no.4
• Fuel inj. no.5
• Fuel inj. no.6
• Heated oxygen sensor no.4 (exhaust pipe, between catalytic converter & muffler)
• Hot in run or start
• Linear egr valve solenoid (top of engine, left of generator)
• Nca
• Pnk
• Pnk pnk pnk tan
• Red
• Tan
• Tcc on/off sol.
• Tcc pwm sol.
• Transmission fluid temperature (tft) sensor (internal)
• Under hood fuse-relay center

4.3L (VIN W), Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Astro 1996

List of elements for 4.3L (VIN W), Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Astro 1996:

• (left rear of engine block, next to knock sensor) g114
• (left side of frame rail, next to canister) g112
• (right front of dash, above blower motor) g201
• (right side of dash, above blower motor) g201
• 5v ref
• B14
• B17
• Ecm b f11
• Engine coolant temperature (ect) sensor (on side of linear egr valve solenoid, top of engine)
• Fuel a pump prime connector
• Fuel pump & sender (inside fuel tank)
• Fuel pump relay
• G12
• G125 (front of engine, near thermostat housing)
• Gauge input oil pressure
• Gauges fuse 4 10a
• Hot at all times
• Hot in off, run or start
• Hot in run or start
• I/p fuse block
• Input fuel gauge
• Input odometer speedometer &
• Instrument cluster
• Intake manifold air temp sensor (top of air intake duct)
• Map
• Map sensor (top of engine, near ignition coil)
• Mass air flow sensor (maf) (front of air intake duct)
• Mini fuse f11 20a
• Nca
• Oil pressure switch & sender (rear of engine, behind left side of distributor)
• Pnk
• Purge solenoid vacuum switch (top rear of engine, above right side valve cover)
• Red
• Ref lo
• Service engine soon indicator (mil)
• Tan
• Tan a
• Temp
• Throttle position (tp) sensor (top of engine, left side of throttle body)
• Trans fuse 20 10a
• Under-hood fuse-relay center
• Underhood fuse-relay center

4.3L (VIN W), Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Astro 1996

List of elements for 4.3L (VIN W), Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Astro 1996:

• 12v battery fused
• 5v ref. voltage
• 5v return
• A/c high pressure cut-off switch (rear of a/c compressor)
• A/c request signal
• Brake pressure modulator valve (bpmv) (left front side of frame, left of transmission)
• Brake sw input
• Brake switch input
• C210
• Check eng lp out
• Compass & temperature display module
• Convenience center (left side of i/p fuse block, by kick panel)
• Cruise control module (center front of dash, left of windshield wiper module)
• Cruise engaged
• Cruise engaged sig
• Cylinder no.1
• Cylinder no.2
• Cylinder no.3
• Cylinder no.4
• Cylinder no.5
• Cylinder no.6
• Data link connector (dlc) (lower left side of dash)
• Distributor (top rear of engine)
• Distributor ignition control module (top of engine, front of coil)
• Dlc ctrl
• Est output sig
• Fuel pump rly ctrl
• Fused output
• G125 (front of engine, near thermostat housing)
• Ground
• High voltage coil wire
• Hot in run
• I/p fuse block
• Ign input
• Ign timing sig.
• Ignition coil (top of engine, behind generator)
• Ignition feed
• M4 brake fuse 18 10a n3
• Nca
• Overhead console
• Pnk
• Pnk a
• Power
• Press ctrl sol lo
• Press ctrl sol. hi
• Radio
• Red
• Serial data sig
• Service circuit-power
• Spark plugs
• Switch output
• Tach. sig.
• Tachometer test lead
• Tan
• Tcc/ stoplamp switch (open w/brake pedal depressed) (above brake pedal)
• Trans press sig-bit 1
• Trans press sig-bit 2
• Trans press sig-bit 3
• Vehicle control module (vcm) (left side of engine compartment, side of battery)
• Vss input
• Vss sig
• Vss signal