Oldsmobile Silhouette I (1989-1996) (right side of engine, below electronic ignition module) Wiring diagrams

BLK WIRE BRN WIRE CONNECTED TO THROTTLE LINKAGE CONVENIENCE CENTER IGN FUSE CRUISE CONTROL SWITCH CRUISE CONTROL VACUUM/TCC SWITCH DK BLU WIRE DK BLU/WHT WIRE ENGINE CONTROLS SYSTEM (3.8L VINL), A/C COMPRESSOR CONTROLS SYSTEM FUSE BLOCK GRY WIRE GRY/BLK WIRE HOT IN RUN IGN FUSE HOT IN RUN, BULB TEST OR START LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE NCA WIRE OFF OFF R/A R/A ON ON PEDAL SUPPORT) PNK WIRE PPL PPL VSS INPUT (LO) VSS INPUT (HI) SERVO POSITION SENSOR (SPS) SET SWITCH SET/COAST INPUT RESUME/ACCEL INPUT CRUISE ON INPUT BRK IN (VENT&VAC CNTLS) STOPLAMP/ CRUISE BRAKE SWITCH TAN WIRE THROTTLE POSITION (TP) SENSOR (MOUNTED TO SEQUENTIAL FUEL INJECTION UNIT) VACUUM MOTOR VACUUM SOURCE VACUUM VALVE VEHICLE SPEED SENSOR VENT VENT VALVE WHT WIRE YEL WIRE

BLK/WHT WIRE DATA LINK CONNECTOR DIAGNOSTIC REQUEST DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (MOUNTED TO DASH PANEL, LEFT OF BRAKE PEDAL) PPL SERIAL DATA STEERING WHEEL CONTROLS CIRCUIT TAN WIRE

A/C CLUTCH DIODE A/C COMP- RESSOR CLUTCH A/C CLUTCH DIODE A/C COMPRESSOR CLUTCH A/C REFRIG- ERANT PRESSURE SWITCH A/C REFRIGERANT PRESSURE SWITCH BATTERY BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE COOLANT PULLER FAN COOLANT PUSHER FAN CRUISE CONTROL SERVO DATA LINK CONNECTOR DATA LINK CONNECTOR INSTRUMENT CLUSTER FUEL PUMP RELAY HEATED OXYGEN SENSOR HI BEAM LAMP INSTRUMENT CLUSTER KNOCK SENSOR MODULE LEFT COMPOSITE HEADLAMP LEFT FRONT PARK/ TURN LAMP LEFT HORN LO BEAM LAMP LO BEAM LAMP HI BEAM LAMP MASS AIR FLOW SENSOR NCA WIRE OIL PRESSURE SENDER FUEL PUMP SWITCH POWER- TRAIN CONTROL MODULE (PCM) POWERTRAIN CONTROL MODULE (PCM) RIGHT COMPOSITE HEADLAMP RIGHT FOG LAMP RIGHT FRONT PARK/ TURN LAMP TAN WIRE TAN/WHT WIRE TRANSAXLE POSITION SWITCH TRANSAXLE POSITION SWITCH FUEL PUMP RELAY UNDER- HOOD LAMP RIGHT HORN LEFT FOG LAMP W/O A/C WHT/ BLK WIRE

AUTOMATIC TRANSAXLE BATTERY BATTERY PNK IGNITION WIRE BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE DATA LINK CONNNECTOR (PARTIAL) (BELOW I/P, LEFT OF STEERING COLUMN) DK BLU WIRE ENG COOLANT TEMP ENGINE COOLANT TEMPERATURE (ECT) SENSOR (LEFT SIDE OF ENGINE) FUSE BLOCK- I/P FUSIBLE LINK C GRN WIRE GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START IGN FUSE LT GRN WIRE PCM FUSE PCM GROUND PCM GROUND CONN 1 PNK WIRE PPL RED WIRE SENSOR RETURN GND SERIAL DATA CONN 2 SHIFT A SOL SHIFT A SOL CTRL SHIFT B SOL SHIFT B SOL CTRL PPL BRAKE ON/OFF STOPLAMP/ TCC SWITCH TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC CTRL TCC PWM SOL TCC PWM SOL CTRL THROTTLE POS SENS THROTTLE POSITION (TP) SENSOR (MOUNTED TO SEQUENTIAL FUEL INJECTION UNIT) TRANS POS SW A TRANS POS SW B TRANS POS SW C TRANS POS SW PARITY TRANS TEMP SENS CONN 3 TRANSAXLE CONVERTER CLUTCH TRANSAXLE POSITION SW (LEFT REAR OF ENG COMPT, MOUNTED TO TOP OF TRANSAXLE) TRANSAXLE TEMP. SENSOR VEHICLE SPEED SENSOR (MOUNTED TO RIGHT TOP OF TRANSAXLE) VSS IN HI VSS IN LO WHT WIRE YEL WIRE YEL/BLK WIRE

1 PNK/ WIRE 4 PNK WIRE 473 335 COOLANT FAN RELAY CTRL COOLANT FAN RELAY CTRL A/C RELAY MIL CTRL 5 PNK/ WIRE A/C HIGH PRESSURE CUT OFF A/C PRESSURE CYCLING SWITCH DATA LINK CONNECTOR A/C REFRIGERANT PRESSURE SWITCH A/C REQUEST DATA INPUT/OUTPUT BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BRAKE INPUT BRN WIRE BRN/WHT WIRE COOLANT PUSHER FAN RELAY COOLANT PULLER FAN RELAY A/C COMPRESSOR RELAY CRUISE CONTROL SWITCH DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE, DIAGNOSTIC ENERGY RESERVE MODULE FUEL INJECTORS #2 FUEL PUMP PRIME CONNECTOR (ENGINE WIRING HARNESS, BEHIND BATTERY) FUEL PUMP RELAY (BEHIND RIGHT HEADLAMP) FUEL SENDER ASSEMBLY (IN FUEL TANK) GENERATOR (RIGHT REAR OF ENGINE) GRN WIRE GRY WIRE GRY/BLK WIRE HOT IN RUN, BULB TEST OR START IDLE AIR CONTROL MOTOR (MOUNTED TO SEQUENTIAL FUEL INJECTION UNIT) INJ FUSE INSTRUMENT CLUSTER LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE LT LT OIL PRESSURE SENDER/FUEL PUMP SWITCH (FRONT OF ENGINE, NEAR OIL FILTER) PCM GROUND GROUND PCM GROUND PCM GROUND EST BYPASS SIGNAL EST CONTROL SIGNAL PNK IGNITION 1 EGR SOLENOID OUTPUT WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED WIRE STOP LAMP/ CRUISE BRAKE SWITCH (ON BRAKE PEDAL SUPPORT) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PWM SOLENOID CTRL UNDERHOOD IN-LINE FUSE (BEHIND RIGHT HEADLAMP) VEHICLE SPEED SENSOR (ON RIGHT TOP OF TRANSAXLE) VSS SIGNAL FUEL PUMP RELAY CTRL WHT WIRE YEL WIRE YEL/BLK WIRE

4 5 PPL 643 646 453 630 633 647 645 644 BUFFER AMP BLK WIRE BLK/RED WIRE BLK/WHT WIRE BRAKES APPLIED INPUT CRUISE SERVO SENS INPUT HI BRN WIRE BRN/WHT WIRE BUFFER AMP BYPASS SW CAMSHAFT SENSOR (LOWER RIGHT SIDE OF ENGINE) CRANKSHAFT SENSOR (LOWER RIGHT SIDE OF ENGINE) CRUISE CONTROL SERVO DIGITAL EXHAUST GAS RECIRCULATION SOLENOID VALVE (TOP LEFT SIDE OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ELECTRONIC IGNITION MODULE (FRONT OF ENGINE) ENGINE COOLANT TEMPERATURE SENSOR (LEFT SIDE OF ENGINE) EVAPORATIVE EMISSION CANISTER PURGE SOLENOID (TOP REAR OF ENGINE) GRY WIRE GRY/RED WIRE HALL EFFECT SENSOR HEATED OXYGEN SENSOR (REAR OF ENGINE ON EXHAUST MANIFOLD) HOT AT ALL TIMES FUSIBLE LINK IAT SENSOR INPUT INSTRUMENT CLUSTER (TACH) INTAKE AIR TEMPERATURE SENSOR (PART OF AIR CLEANER ASSEMBLY) KNOCK SENSOR (RIGHT FRONT OF ENGINE) LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE MASS AIR FLOW SENSOR (TOP LEFT SIDE OF ENGINE) NCA WIRE PNK 1 2 WIRE PNK 839 121 423 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 420 398 PPL/WHT WIRE RED WIRE SENS GROUND SHIFT A SOLENOID CTRL SHIFT B SOLENOID CTRL SPARK PLUGS SWS/ AMP TAN WIRE TAN/BLK WIRE TCC CONTROL THROTTLE POSITION SENSOR (MOUNTED TO SEQUEN- TAIL INJECTION UNIT) TRANSAXLE POSITION/ NEUTRAL SAFETY SWITCH (TOP OF TRANSAXLE) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE