ENGINE PERFORMANCE – Chevrolet Astro 1997 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L

4.3L (VIN W), Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Astro 1997

List of elements for 4.3L (VIN W), Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Astro 1997:

• (eng harn, 6cm from trans breakout toward front of eng)
• (thermostat housing)
• (top of engine, left rear of throttle body) idle air control valve motor
• (top of engine, next to map sensor) evaporative emissions canister purge solenoid valve
• 1-2 shift sol. ctrl
• 2-3 shift sol. ctrl
• 3-2 ctrl sol. ctrl
• A/c comp rly ctrl
• Air conditioning system
• Cam posit sens rtn
• Cam posit sens sig
• Camshaft position sensor (side of distributor)
• Crank posit sens sig
• Crankshaft position sensor (behind right side of engine crankshaft pulley)
• Ect sens input
• Egr posit input
• Evap can vent valve
• Evap sol purge ctrl
• G114 (left rear of engine block, next to knock sensor)
• G134
• G201 (right side of dash, above blower motor)
• Ground
• 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 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
• Pnk pnk pnk
• Post-catalyst sens hi
• Post-catalyst sens lo
• Power
• Pre-catalyst sens hi
• Pre-catalyst sens lo
• Right sens hi
• Right sens lo
• S117
• S124
• S126
• S127
• Sensor ground
• Tan
• Tcc on/off sol. ctrl
• Tcc pwm sol ctrl
• Throttle posit sens
• Trans temp sens sig
• Twisted wire pair
• Vcm ground
• Vehicle control module (vcm) (left side of engine compartment, lower 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 1997

List of elements for 4.3L (VIN W), Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Astro 1997:

• 1-2 shift sol.
• 2-3 shift sol.
• 3-2 control sol.
• Automatic transmission
• Automatic transmission fluid pressure manual valve position switch
• D2 sw
• D3 sw
• D4 sw
• Ecm-1 mini fuse f7 20a
• Eng-1 mini fuse f7 20a
• Evaporative emission canister vent valve (under- carriage, left of canister)
• 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)
• Lo sw
• Nca
• Pnk
• Pnk pnk pnk tan
• Pressure control solenoid valve
• Red
• Rev sw
• S116
• S119
• S123
• Tan
• Tcc on/off sol.
• Tcc pwm sol.
• Transmission fluid temperature sensor
• Underhood fuse/relay center

4.3L (VIN W), Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Astro 1997

List of elements for 4.3L (VIN W), Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Astro 1997:

• (eng harn, 6cm from generator breakout, toward rear of eng)
• (eng harn, 6cm from linear egr valve sol breakout)
• (right side of dash, above blower motor) g201
• (right side of left frame rail) g113
• 12v in
• B14
• B17
• Ecm b f11
• Engine coolant temperature 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
• G134 (thermostat housing)
• Gauge input oil pressure
• Gauges fuse 4 10a
• Gnd
• 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 air temperature sensor (top of air intake duct)
• Maf sig
• Malfunction indicator lamp (mil)
• Manifold absolute pressure 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
• Red
• S109
• S111
• S115 (eng harn, 4cm from underhood fuse/relay center breakout)
• S117
• S118
• S120
• S122 (eng harn, 12cm from generator breakout)
• S213
• Tan
• Tan a
• Throttle position sensor (top of engine, left side of throttle body)
• Trans fuse 20 10a
• Underhood fuse/relay center

4.3L (VIN W), Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Astro 1997

List of elements for 4.3L (VIN W), Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Astro 1997:

• (eng harn, 10cm from bulkhead conn left side of i/p)
• (eng harn, 4cm from under- hood fuse/relay center breakout)
• (front of dash, 32cm from lamp harn breakout) s130
• (i/p harn, 4cm from cluster breakout)
• 5v in b
• 5v ref. voltage
• 5v return
• A/c request (hi)
• A/c request (lo)
• Air conditioning system
• 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
• Data link connector (dlc-partial) (lower left side of dash)
• Distributor (top rear of engine)
• Distributor ignition control module (top of engine, front of coil)
• Dlc ctrl
• Electronic brake control module (left front side of frame, left of transmission)
• Est output sig
• Fuel level d
• Fuel level mod out
• Fuel level rtn
• Fuel pump rly ctrl
• Fuel sender gauge module (left side of dash)
• Fused ign (run)
• Fused ign (run/start)
• G114 (left rear of eng block next to knock sensor)
• Gauge ctrl l
• 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
• Mod out m
• Nca
• Overhead console
• Pnk
• Pnk a
• Power a
• Power b(+)
• Press ctrl sol lo
• Press ctrl sol. hi
• Radio
• Red
• S110
• S112
• S113 (eng harn, 10cm from underhood fuse/relay center breakout)
• S117
• S218
• Sensor in c
• Serial data sig
• Service circuit-power
• Spark plugs
• Tach. sig.
• Tachometer test lead
• 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 in
• Vss input
• Vss sig
• Vss signal