Pontiac Firebird IV (1993-2002) yel Wiring diagrams

1 2 GROUND PUMP MTR CTRL 1995 VFTC ABS BATT MINI FUSE ABS IGN MINI FUSE ABS INOP INDICATOR ASR IND (CHEVROLET) TCS OFF IND (PONTIAC) BLK WIRE BLK/ WHT WIRE BRAKE INDICATOR BRAKE PRESSURE MODULATOR VALVE BRN/WHT WIRE DEL TOR DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (TOP OF LEFT FRONT FRAME RAIL) ENGINE WIRING HARNESS JUNCTION BLOCK 1 ABS BATT 1 MAXI FUSE ENGINE WIRING HARNESS JUNCTION BLOCK 2 GAUGES FUSE 9 GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT FRONT WHEEL SPEED SENSOR LF WHL SPD LF WHL SPD LR WHL SPD LR WHL SPD LO TRAC INDICATOR LT BLU WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK IGNITION DEL TORQUE WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (BEHIND RIGHT STRUT TOWER) PPL/WHT WIRE PUMP MOTOR REAR WHEEL SPEED SENSOR RED WIRE REQ TOR REQ TORQUE SIG RF WHL SPD RF WHL SPD STOP LP FD RIGHT FRONT WHEEL SPEED SENSOR SERIAL DATA SPLICE PACK STOP/HAZARD FUSE 1 STOPLAMP/ TCC SWITCH (ON BRAKE PEDAL BRACKET) TACH OUT TACH SIGNAL GROUND BATTERY BATTERY GROUND TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCS SWITCH TCS IND TRACTION CONTROL SWITCH WHT WIRE WHT/ BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 MTR DRIV HI 1061 451 800 SERIAL DATA TAC GROUND SERIAL DATA 397 87 486 597 476 OFF/ON SIG R/A SIG TP SNSR 2 SIG TP SNSR 2 TP SNSR 2 GND 400 401 800 1061 PPL 64 65 15 14 VSS HIIGH VSS LOW SERIAL DATA SERIAL DATA BLK WIRE BLK/WHT WIRE BOTTOM UNDERHOOD FUSE BLOCK BRN WIRE CLUTCH ANTICIPATE CLUTCH PEDAL POSITION (CPP) SWITCH (ON CLUTCH PEDAL BRACKET) CRUISE CONTROL RELEASE SWITCH (ON BRAKE PEDAL BRACKET) CRUISE SWITCH DK BLU WIRE DK GRN WIRE ETC FUSE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK LT BLU WIRE MULTIFUNCTION TURN SIGNAL LEVER NCA WIRE OFF OFF ON ORG/ WIRE ORG/BLK WIRE PNK A/C SYSTEM WIRE PNK WIRE POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, BEHIND RIGHT STRUT TOWER) PPL R/A RELEASE SIG SET/COAST STOP/ HAZARD FUSE 1 STOPLIGHT SWITCH (ON BRAKE PEDAL BRACKET) TAC GROUND TAN WIRE TCS BATT FUSE THROTTLE ACTUATOR CONTROL (ON THROTTLE BODY) THROTTLE ACTUATOR CONTROL (TAC) MODULE (ON ACCELERATOR PEDAL BRACKET) TOP UNDERHOOD FUSE BLOCK VEHICLE SPEED SENSOR (VSS) (ON REAR SIDE OF TRANSMISSION) YEL WIRE

0.31 OHM TOTAL 0.61 OHM 1.85 OHM 1995 VFTC A/C CLUTCH DIODE A/C CLUTCH RELAY CONTROL A/C COMPRESSOR CLUTCH A/C COMPRESSOR RELAY A/C REQUEST SIG A/C SENSOR SIG A/C-CRUISE MINI-FUSE BLK WIRE BLOWER MOTOR BLOWER MOTOR RELAY (ON INFLATABLE RESTRAINT DASH MODULE BRACKET) BLOWER RESISTOR (IN HVAC MODULE) BLOWER SWITCH BRN WIRE COOL FAN MAXI-FUSE COOL FAN MINI-FUSE DEF HTR/DEF DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLING FAN RELAY 1 (IN UNDERHOOD ELECTRICAL CENTER) ENGINE COOLING FAN RELAY 2 (IN UNDERHOOD ELECTRICAL CENTER) ENGINE COOLING FAN RELAY 3 (IN UNDERHOOD ELECTRICAL CENTER) FAN RLY 1 CONTROL FAN RLY 2, 3 CONTROL GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START HTR VENT HVAC CONTROL HVAC FUSE 6 I/P 1 MAXI-FUSE I/P FUSE BLOCK LEFT ENGINE COOLING FAN LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MAX HTR/ DEF NORM VENT BI-LV MAX NORM BI-LV NCA WIRE OFF OFF DEF BLEND ORG/ WIRE PNK WIRE POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, BEHIND RIGHT STRUT TOWER) PPL RED WIRE RED/BLK WIRE RIGHT ENGINE COOLING FAN SELECTOR SWITCH SENSOR GROUND TAN WIRE UNDERHOOD ELECTRICAL CENTER WHT WIRE YEL WIRE

1 2 GROUND PUMP MTR CTRL 1995 VFTC ABS BATT MINI FUSE ABS IGN MINI FUSE ABS INOP INDICATOR ACCELERATOR CONTROL, ADJUSTER (FORWARD OF RIGHT FRONT WHEELWELL) ASR IND (CHEVROLET) TCS OFF IND (PONTIAC) BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BRAKE INDICATOR BRAKE PRESSURE MODULATOR VALVE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE ELECTRONIC BRAKE, TRACTION CONTROL MODULE (TOP OF LEFT FRONT FRAME RAIL) ENGINE WIRING HARNESS JUNCTION BLOCK 1 ABS BATT 1 MAXI FUSE ENGINE WIRING HARNESS JUNCTION BLOCK 2 GAUGES FUSE 9 GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT FRONT WHEEL SPEED SENSOR LEFT REAR WHEEL SPEED SENSOR LO TRAC INDICATOR LT BLU WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK IGNITION TCS SIGNAL WIRE PNK WIRE POWERTRAIN CONTROL MODULE (BEHIND RIGHT STRUT TOWER) PPL/WHT WIRE PUMP MOTOR RED WIRE REQ TPS SIG RIGHT FRONT WHEEL SPEED SENSOR RIGHT REAR WHEEL SPEED SENSOR RR WHL SPD RF WHL SPD RF WHL SPD STOP LP FD SENS GND SERIAL DATA SPK RTD SPLICE PACK STOP/HAZARD FUSE 1 STOPLIAMP/ TCC SWITCH (ON BRAKE PEDAL BRACKET) TACH OUT TACH SIGNAL GROUND BATTERY BATTERY GROUND TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCS BATT MINI FUSE TCS SWITCH TCS IND IGN RETARD LF WHL SPD LF WHL SPD LR WHL SPD LR WHL SPD THROTTLE POSITION SENSOR (ON THROTTLE BODY) TP SENS TPS RET ACC CTRL BATTERY ACC CRTL GROUND 560 1540 561 TRACTION CONTROL SWITCH WHT WIRE WHT/ BLK WIRE YEL WIRE

0.31 OHM TOTAL 0.61 OHM 1.85 OHM 1995 VFTC A/C CLUTCH DIODE A/C CLUTCH RELAY CTRL A/C CLUTCH STATUS A/C COMPRESSOR CLUTCH A/C COMPRESSOR RELAY A/C REQUEST SIG A/C-CRUISE MINI-FUSE BLK WIRE BLOWER MOTOR BLOWER MOTOR RELAY (ON INFLATABLE RESTRAINT DASH MODULE BRACKET) BLOWER RESISTOR (IN HVAC MODULE) BLOWER SWITCH BRN WIRE COOL FAN MAXI-FUSE COOL FAN MINI-FUSE DEF HTR/DEF DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLING FAN RELAY 1 (IN UNDERHOOD ELECTRICAL CENTER) ENGINE COOLING FAN RELAY 2 (IN UNDERHOOD ELECTRICAL CENTER) ENGINE COOLING FAN RELAY 3 (IN UNDERHOOD ELECTRICAL CENTER) FAN RLY 1 CONTROL FAN RLY 2, 3 CONTROL A/C REF PRESS SENSOR SIG GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START HTR VENT HVAC CONTROL HVAC FUSE 6 I/P 1 MAXI-FUSE I/P FUSE BLOCK LEFT ENGINE COOLING FAN LT BLU WIRE LT GRN WIRE MAX HTR/ DEF NORM VENT BI-LV MAX NORM BI-LV NCA WIRE OFF OFF DEF BLEND ORG/ WIRE PNK WIRE POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, BEHIND RIGHT STRUT TOWER) PPL RED WIRE RED/BLK WIRE RIGHT ENGINE COOLING FAN SELECTOR SWITCH SENSOR GROUND TAN WIRE UNDERHOOD ELECTRICAL CENTER WHT WIRE YEL WIRE

1 2 GROUND PUMP MTR CTRL 1995 VFTC ABS BATT 1 MAXI FUSE ABS BATT MINI FUSE ABS IGN MINI FUSE ABS INOP IND BLK WIRE BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING IND DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (TOP OF LEFT FRONT FRAME RAIL) ENGINE WIRING HARNESS JUNCTION BLOCK 1 ENGINE WIRING HARNESS JUNCTION BLOCK 2 GAUGES FUSE 9 GROUND BATTERY BATTERY GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT FRONT WHEEL SPEED SENSOR LF WHL SPD LF WHL SPD REAR WHL SPD REAR WHL SPD LOW TRAC IND LT BLU WIRE NCA WIRE ORG/ WIRE PNK IGNITION WIRE PNK WIRE PUMP MOTOR REAR WHEEL SPEED SENSOR RED WIRE RF WHL SPD RF WHL SPD STOP LP FD RIGHT FRONT WHEEL SPEED SENSOR SERIAL DATA SPLICE PACK STOP/HAZARD FUSE 1 STOPLAMP/ TCC SWITCH TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE

1 2 GROUND PUMP MTR CTRL 1995 VFTC ABS BATT 1 MAXI FUSE ABS BATT MINI FUSE ABS IGN MINI FUSE ABS INOP IND BLK WIRE BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING IND DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (TOP OF LEFT FRONT FRAME RAIL) ENGINE WIRING HARNESS JUNCTION BLOCK 1 ENGINE WIRING HARNESS JUNCTION BLOCK 2 GAUGES FUSE 9 GROUND BATTERY BATTERY GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT FRONT WHEEL SPEED SENSOR LF WHL SPD LF WHL SPD REAR WHL SPD REAR WHL SPD LOW TRAC IND LT BLU WIRE NCA WIRE ORG/ WIRE PNK IGNITION WIRE PNK WIRE PUMP MOTOR REAR WHEEL SPEED SENSOR RED WIRE RF WHL SPD RF WHL SPD STOP LP FD RIGHT FRONT WHEEL SPEED SENSOR SERIAL DATA SPLICE PACK STOP/HAZARD FUSE 1 STOPLAMP/ TCC SWITCH TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE

ACCY ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM ENGINE CONTROLS SYSTEM BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BODY CONTROL MODULE (UNDER RIGHT SIDE OF DASH, NEAR BLOWER MOTOR) BRN WIRE BULB TEST COURTESY FUSE 8 DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR LOCKS SYSTEM FUSIBLE LINK E GAGES FUSE 9 GROUND BATTERY RETAINED ACCESSORY POWER (RAP) ACCY INTERIOR LIGHTS FEED BATTERY GROUND IGN KEY RESISTOR RETURN GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ACC, RUN OR W/ RAP ENERGIZED HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK IGNITION SWITCH LOCK OFF LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM (RAP RELAY) PPL/WHT WIRE RADIO FUSE 17 RED WIRE RED/BLK WIRE RUN WIRE TAN WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

3.8L 5.7L BLK WIRE BRN WIRE COOL FAN FUSE COOLING FAN (LEFT) COOLING FAN (RIGHT) COOLING FAN RELAY 1 COOLING FAN RELAY 2 COOLING FAN RELAY 3 DK BLU WIRE DK GRN WIRE ECT SENSOR GRY WIRE HIGH SPEED CTRL HOT AT ALL TIMES LOW SPEED CTRL LT BLU WIRE ORG/ WIRE RED WIRE UNDERHOOD FUSE BLOCK (TOP) (LEFT FRONT CORNER OF ENGINE COMPT) WHT WIRE YEL WIRE

1 2 3 PNK PNK WIRE 1-2 SHIFT SOL CONTROL HI SPEED COOL FAN CONT LO SPEED COOL FAN CONT CMP INPUT 400 401 PPL 43 44 FUEL INJ 6 CONTROL 2-3 SHIFT SOL CONTROL 439 340 PNK IGNITION BATTERY WIRE 46 47 48 FUEL INJ 4 CONTROL FUEL INJ 5 CONTROL REFERENCE LOW 53 54 55 BYPASS IGNITION CONTROL VSS OUTPUT PCM GROUND PCM GROUND BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BRN WIRE BRN/WHT WIRE BYPASS CKP SYNC SIG CMP OUTPUT CMP SIGNAL COOLING FAN SYSTEM CRUISE MODULE, RADIO, INST CLUSTER 451 451 DATA LINK CONNECTOR (UNDER DASH, TO THE RIGHT OF STEERING COLUMN) DK BLU WIRE DK GRN WIRE DK GRN/ WHT WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE, TRACTION CONTROL MODULE ELECTRONIC IGNITION CONTROL MODULE (ICM) (AT FRONT END OF LEFT CYLINDER HEAD) ENG CTRL FUSE EVAP PURGE VALVE CONT EVAPORATIVE EMISSIONS (EVAP) CANISTER FUEL INJ 1 CONTROL FUEL INJ 2 CONTROL GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST, START HOT IN RUN, START IGN IGN CONTROL IGN VOLTAGE IGNITION KNOCK SENSOR (KS) BANK 2 (RIGHT SIDE OF CYL BLOCK) LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAF SENSOR INPUT THEFT DETER FUEL ENABLE REQUESTED TORQUE IN 229 463 MASS AIRFLOW (MAF) SENSOR (IN AIR DUCT, FRONT OF INT MANIFOLD) ORG/ WIRE ORG/BLK WIRE PCM BATT FUSE PNK TRANS RANGE A INPUT WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN ENG COMPT, BEHIND RIGHT STRUT TOWER) PPL PPL PNK 4 5 6 7 8 9 WIRE PPL/WHT WIRE PURGE SOLENOID (RIGHT FRONT OF ENG, NEXT TO INJ 2) RED/BLK WIRE REF LOW SERIAL DATA (CLASS 2) PCM GROUND SIGNAL SPLICE PACK STOPLAMP SWITCH (ON BRAKE PEDAL SUPPORT) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (BOTTOM) PCM IGN FUSE UNDERHOOD FUSE BLOCK (TOP) VEHICLE SPEED SENSOR (VSS) (ON REAR SIDE OF TRANSMISSION) VSS HIGH VSS LOW WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE