Chevrolet Astro I (1985-2005) (behind data link connector) Wiring diagrams

1 2 GND TCC PWM 1 8 17 18 19 20 24 27 32 33 34 40 53 57 58 59 60 67 72 74 75 GND 1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID 3-2 SHIFT SOLENOID 79 80 3-2 SS SENS GND A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH ANTI-LOCK BRAKES SYSTEM AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ABOVE RADIO) BRAKE FUSE 18 BRN WIRE BRN/WHT WIRE CONVENIENCE CENTER CRUISE CONTROL SYSTEM (ENGINE HARN, NEAR BREAKOUT TO UNDERHOOD FUSE BLOCK) DK BLU WIRE DK GRN WIRE ECM-B FUSE ELECTRONIC BRAKE CONTROL MODULE ENGINE COOLANT TEMPERATURE SENSOR (LEFT SIDE OF LEFT CYL HEAD) FLUID TEMP SENSOR FUEL PUMP RELAY GRY WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, START I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) IGNITION COIL, IGNITION CONTROL MODULE, FUEL INJECTORS PNK WIRE INSTRUMENT PANEL CLUSTER (IPC) LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE PARK/NEUTRAL POSITION SWITCH (LEFT CENTER OF TRANSMISSION) PC SOL HI PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT SIDE OF FIREWALL) PPL PPL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL PPL PPL/WHT WIRE PRESS CTRL SOLENOID RADIO RADIO FUSE 19 RED WIRE RED/BLK WIRE REV, LO RUN WIRE SPLICE PACK STOPLAMP SWITCH (ABOVE BRAKE PEDAL) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PWM SOLENOID TCC SOLENOID THROTTLE POSITION SENSOR (LEFT SIDE OF THROTTLE BODY) TRANS FUSE 20 UNDERHOOD FUSE BLOCK (LEFT SIDE OF FIREWALL) ECM I FUSE VEHICLE SPEED SENSOR (REAR OF TRANSMISSION) WHT WIRE YEL WIRE YEL/BLK WIRE

ATC FUSE BLK WIRE BRAKE FUSE 18 BRN WIRE CONVENIENCE CENTER (LEFT OF I/P FUSE BLOCK, BY LEFT KICK PANEL) DATA LINK CONNECTOR (DLC) (PARTIAL) (UNDER LEFT SIDE OF DASH) DK GRN WIRE DK GRN/WHT WIRE FRONT PROPSHAFT SPEED SENSOR (NEAR CENTER OF TRANSFER CASE) GROUND GROUND GRY WIRE HOT AT ALL TIMES HOT IN I/C LOGIC I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LT BLU WIRE ORG/ WIRE PPL RADIO BATT FUSE 19 REAR PROPSHAFT SPEED SENSOR (NEAR CENTER OF TRANSFER CASE) RED WIRE RR VSS RR VSS RUN WIRE SERIAL DATA IGNITION SERVICE AWD IND SOUND SYSTEM (RADIO) STOPLAMP SWITCH, ELECTRONIC BRAKE CONTROL MODULE) TC MOTOR TC MOTOR GROUND BATTERY TRANSFER CASE ENCODER MOTOR (INSIDE TRANSFER CASE) TRANSFER CASE SHIFT CONTROL MODULE (BEHIND LEFT KICK PANEL) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF FIREWALL) VOLTAGE REGULATOR VSS VSS PPL YEL WIRE

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