Chevrolet Astro I (1985-2005) Wiring diagram engine performance 4.3l vin x

12 13 14 PPL 3-2 SS ECT LOW REF BATTERY CLS 2 DATA CLS 2 DATA TPS LOW REF CMP LOW REF BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ABOVE RADIO) BRN/WHT WIRE CENTRAL SEQUENTIAL FUEL INJECTION CKP SIG CRANKSHAFT POSITION SENSOR (BEHIND AND TO THE RIGHT OF PULLEY) DK BLU WIRE DK GRN WIRE ECM I FUSE ECM-B FUSE ENGINE COOLANT TEMPERATURE SENSOR (ON LEFT SIDE OF LEFT CYLINDER HEAD) GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START I/P FUSE BLOCK INJECTOR 1 INJECTOR 3 INJECTOR 4 INJECTOR 5 KNOCK SENSOR (LEFT REAR OF DISTRIBUTOR) KS RETURN KS SIG LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK IGNITION INJECTOR 2 INJECTOR 6 WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (ON LEFT SIDE OF FIREWALL) PPL PPL/WHT WIRE PRND A BRAKE SW PRND P PPL PRND B CMP SIG RANGE B RANGE C IGNITION BATTERY CKP LOW REF RED WIRE SENS LOW REF GROUND TAN WIRE TAN/WHT WIRE TFT LOW REF MAP LOW REF TRANS FUSE 20 UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

12 13 14 PPL BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (ON SIDE OF DISTRIBUTOR) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUEL PUMP RELAY GRY WIRE GRY/BLK WIRE HEATED OXYGEN SENSOR (BANK 1 SENSOR 1) (LEFT FRONT EXHAUST Y-PIPE) HEATED OXYGEN SENSOR (BANK 1 SENSOR 2) (ON EXHAUST, BETWEEN MUFFLER, CONVERTER) HEATED OXYGEN SENSOR (BANK 2 SENSOR 1) (RIGHT FRONT EXHAUST Y-PIPE) HOT IN RUN, START LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PARK/ NEUTRAL POSITION SWITCH (LEFT CENTER OF TRANS) PNK 2 3 WIRE PNK 4 5 WIRE PNK PNK 16 17 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 7 8 9 PPL/WHT WIRE RED WIRE TAN WIRE TAN/WHT WIRE THROTTLE POSITION SENSOR (LEFT SIDE OF THROTTLE BODY) UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK ENG-1 FUSE WHT WIRE YEL WIRE

1-2 SOL 19 20 21 PNK WIRE 2-3 SOL 3-2 SOL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH ANTI-LOCK BRAKES SYSTEM PPL (ENGINE HARN 15 CM FROM FUSE BLOCK BREAKOUT) AUTOMATIC TRANSAXLE BLK WIRE BLK/WHT WIRE BRN WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EVAPORATIVE CANISTER PURGE SOLENOID (TOP OF ENGINE, NEAR MAP SENSOR) EVAPORATIVE CANISTER VENT VALVE (UNDERSIDE OF VEHICLE, AT FUEL FILTER) GRY WIRE HOT IN RUN I/P FUSE BLOCK BRAKE FUSE 18 LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP OF ENGINE, NEAR IGN COIL) MASS AIRFLOW SENSOR (FRONT OF AIR INTAKE DUCT) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK 2 3 WIRE PNK 4 5 WIRE PNK PNK 16 17 WIRE PNK WIRE PPL PPL 7 8 9 PPL/WHT WIRE RED WIRE RED/BLK WIRE REV STOP- LIGHT SWITCH (ABOVE BRAKE PEDAL) TAN WIRE TAN/BLK WIRE TCC PMW SOL TCC SOL TFT SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

19 20 21 PNK WIRE A/C REQ A/C SYSTEM ABS SYSTEM (SPEED SIGNAL) BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COIL DRIVER COIL WIRE CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM (SPEED SIGNAL) CRUISE ENG DISTRIBUTOR DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP PURGE EVAP VENT MIL CTRL 2-3 SS 1-2 SS VSS OUT VSS OUT TFT SENS SIG FUEL LEV CYC SW IN GEN F DUTY SIG IAC COIL B HI IAC COIL B LO IAC COIL A LO IAC COIL A HI GEN L GROUND GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK IAT LOW REF IDLE AIR CONTROL VALVE (LEFT REAR OF THROTTLE BODY) IGN IGNITION COIL IGNITION CONTROL MODULE (TOP OF ENGINE) FRONT OF COIL) INSTRUMENT PANEL CLUSTER INTAKE AIR TEMPERATURE SENSOR (TOP OF AIR INTAKE DUCT) LOGIC LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MAF SENS SIG MAP SIG MALFUNCTION INDICATOR LAMP ORG/ WIRE PC SOL HI PC SOL LO FUEL PMP PNK WIRE POWERTRAIN CONTROL MODULE (LEFT SIDE OF FIREWALL) PPL/WHT WIRE PRND C TRANS RNG A FTP SENS SIG PNK WIRE RADIO BATT FUSE 19 RED WIRE RED/BLK WIRE STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC SOL A/C CLU TIMING TP SIG IAT SIG IC TIMING CTRL VEHICLE SPEED SENSOR (REAR OF TRANSMISSION) VSS LOW VSS HIGH WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE