Saturn ION I (2003-2007) yel Wiring diagrams

61 50 2761 410 LOW REF ECT SENSOR SIG BLK WIRE BODY CONTROL MODULE (BCM) (AT LOWER CENTER OF DASH) CLASS 2 (BCM) CLASS 2 (BCM) IGN IGN CLASS 2 SERIAL DATA COOLANT LEVEL SWITCH (ATTACHED TO OVER FLOW CONTAINER) COOLING FAN (AT FRONT OF ENGINE COMPARTMENT, ATTACHED TO RADIATOR) COOLING FAN FUSE 45 COOLING FAN RELAY 30 COOLING FAN RELAY CONTROL DK GRN WIRE EMISS FUSE 10 ENGINE CONTROL MODULE (ECM) (AT LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE GAUGE HOT AT ALL TIMES HOT W/ POWERTRAIN RELAY ENERGIZED INSTRUMENT PANEL CLUSTER (IPC) LOGIC LOW COOLANT LEVEL IND SIG LT BLU WIRE MESSAGE CENTER PNK WIRE PPL PPL CLASS 2 SERIAL DATA UNDERHOOD FUSE BLOCK (AT LEFT REAR SIDE OF ENGINE COMPT) YEL WIRE YEL/BLK WIRE

2.2L 2.0L ABS 1 FUSE 22 ABS FUSE 40 ABS INDICATOR ABS-2 FUSE 8 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BRAKE PRESSURE MODULATOR VALVE BRN WIRE BRN/WHT WIRE CLASS 2 SERIAL DATA DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (ECBM) (AT LEFT SIDE OF ENGINE COMPARTMENT) ENGINE CONTROL MODULE (ECM) (2.2L) POWERTRAIN CONTROL MODULE (2.0L) ENGINE CONTROLS SYSTEM GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START IGN TIMING CONTROL INSTRUMENT PANEL CLUSTER INSTRUMENT PANEL LAMP SUPPLY LEFT FRONT WHEEL SPEED SENSOR (PART OF LEFT FRONT HUB, BEARING ASSEMBLY) LEFT REAR WHEEL SPEED SENSOR (PART OF LEFT REAR HUB, BEARING ASSEMBLY) LF INLET SOLENOID VALVE LF OUTLET SOLENOID VALVE LOGIC LR INLET SOLENOID VALVE LR OUTLET SOLENOID VALVE LT BLU WIRE MESSAGE CENTER ORG/ WIRE PNK WIRE PPL PPL/WHT WIRE RED WIRE RF INLET SOLENOID VALVE RF OUTLET SOLENOID VALVE RIGHT FRONT WHEEL SPEED SENSOR (PART OF RIGHT FRONT HUB, BEARING ASSEMBLY) RIGHT REAR WHEEL SPEED SENSOR (PART OF RIGHT REAR HUB, BEARING ASSEMBLY) RR INLET SOLENOID VALVE RR OUTLET SOLENOID VALVE STOP FUSE STOP SW INPUT RR WHEEL SEN SIG IGN 1 LR WHEEL SEN REF TAN WIRE TRACTION CONTROL INDICATOR CONTROL TRACTION CONTROL SWITCH (W/ TRACTION CONTROL) (2.2L) TRACTION CONTROL SWITCH SIGNAL TRACTION OFF INDICATOR UNDERHOOD FUSE BLOCK (AT LEFT REAR SIDE OF ENGINE COMPARTMENT) VIO WIRE WHT WIRE YEL WIRE

1140 120 465 1140 142 442 441 SOUND SYSTEMS 1200 20 20 20 20 20 HEADLIGHTS SYSTEM A/C REQUEST SIG LOW BEAM PWR AIR CONDITIONING SYSTEM HEADLIGHTS SYSTEM ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM HEADLIGHTS SYSTEM B (+) FUEL PUMP PWR FUEL PUMP RLY CTRL B(+) B(+) B(+) IGN 3 PWR B(+) B(+) ACC VOLTAGE ACC VOLTAGE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (AT LOWER CENTER OF DASH) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM HEADLIGHTS SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRL AMB LIGHT SEN REF ENGINE CONTROLS SYSTEM FOG LP SW SIG OFF/RUN/CRANK PWR FUSE 47 GROUND LOW REF GRY WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HORNS SYSTEM SHIFT INTERLOCK SYSTEM HOT AT ALL TIMES IP BATT 1 FUSE 39 IP BATT 2 FUSE 41 LP DIM CTRL LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PANEL LP PWR PANEL LP PWR FOG LP RLY CTRL HORN RLY CTRL SHIFT LK SOL PWR PARK LP PWR PARK LP PWR ACC PWR RUN/CRANK PWR PNK IGN 1 PWR WIRE PNK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM (IGNITION SWITCH) POWER WINDOWS SYSTEM PPL/ PPL/ PPL/ PPL/WHT WIRE PWR WINDOW SW LOCKOUT CTRL (SEDAN) REAR DEFOG RLY CTRL HEADLAMPS OFF SIG RED WIRE RUN WIRE RUN/ CRANK FUSE 38 RUN/ CRANK RELAY 28 SECURITY IND CTRL DRL AMB LIGHT SEN SIG SOUND SYSTEMS SOUND SYSTEMS EXTERIOR LIGHTS SYSTEM UNDERHOOD FUSE BLOCK (AT LEFT REAR SIDE OF ENGINE COMPT) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WIPER/WASHER SYSTEM EXTERIOR LIGHTS SYSTEM YEL WIRE YEL/BLK WIRE

1040 1440 B(+) B(+) 1146 140 B(+) B(+) 339 343 PNK IGN 1 VOLTAGE ACC VOLTAGE WIRE 40 143 143 B(+) ACC VOLTAGE ACC VOLTAGE 52 41 141 BLOWER MOTOR PWR IGN 3 VOLTAGE IGN 3 VOLTAGE 52 52 1139 BLOWER MOTOR PWR BLOWER MOTOR PWR IGN 1 VOLTAGE AIR CONDITIONING SYSTEM ANTI-THEFT SYSTEM B(+) B+ B- BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (AT LOWER CENTER OF DASH) BRN WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SYSTEM CRUISE CONTROL SYSTEM, ELECTRONIC POWER STEERING SYSTEMS CRUISE CONTROL SYSTEM, SOUND SYSTEMS CRUISE CONTROL, ENGINE CONTROLS SYSTEMS DEFOGGER SYSTEM HORNS SYSTEM HEADLIGHTS SYSTEM DK BLU WIRE DK GRN WIRE DOOR LK ACT UNLK CTRL LOW BEAM SIG DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM HEADLIGHTS SYSTEM ENGINE CONTROLS SYSTEM GROUND (SEDAN) PASS DR JAMB SW SIG PASS DR JAMB SW SIG WIPER MTR PARK SW SIG GRY WIRE INSTRUMENT CLUSTER SYSTEM LF DR LK ACT UNLK CTRL LF DR LK ACT UNLK CTRL TRUNK AJAR IND CTRL LO COOLANT LEV IND SIG GROUND (SEDAN) LT BLU WIRE MIRRORS SYSTEM ORG/ WIRE PNK IGN 1 VOLTAGE WIRE PNK PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM (IGNITION SWITCH) INSTRUMENT CLUSTER SYSTEM REAR DEFOG RLY CTRL HORN RLY CTRL FOG LP RLY CTRL RED WIRE SOUND SYSTEMS SOUND SYSTEMS EXTERIOR LIGHTS SYSTEM STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TAN WIRE TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM DOOR LOCKS SYSTEM INTERIOR LIGHTS SYSTEM VIO WIRE WARNING SYSTEM WHT WIRE WIPER SW SIG 2 WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE

2.0L 2.2L 59 49 28 56 26 17 LOW REF A/C PRESS 6 15 A/C RELAY PPL CLASS 2 DATA A/C CLUTCH RELAY A/C COMPRESSOR CLUTCH (AT LOWER LEFT FRONT OF ENGINE) A/C DIODE 35 A/C FUSE 5 A/C ON LED A/C REFRIGERANT PRESSURE SENSOR (ON LOWER LEFT SIDE OF ENGINE, BELOW GENERATOR) A/C REQUEST A/C SWITCH BLK WIRE BODY CONTROL MODULE (BCM) (AT LOWER CENTER OF DASH) BRN WIRE CLASS 2 DATA DK GRN WIRE DK GRN/WHT WIRE ECT SENS ENGINE CONTROL MODULE (ECM) (2.2L) (AT LEFT SIDE OF ENGINE COMPT) GRY WIRE HI OFF HVAC FAN SWITCH HOT AT ALL TIMES HOT IN RUN OR START HVAC CONTROL ASSEMBLY HVAC FUSE LI RUN/ CRANK RELAY 28 LOGIC LOGIC A/C ON/OFF IGN 3 VOLT A/C REQUEST LOW REF LT GRN WIRE PPL RED WIRE RED/BLK WIRE RELAY RUN RELAY CTRL RUN WIRE UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE

ALC/ PARK RELAY ANTI-LOCK BRAKES SYSTEM AUTO PARK HEADLAMP SWITCH BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (AT LOWER CENTER OF DASH) BRN WIRE CENTER HIGH MOUNTED STOP LAMP (CHMSL) (6 BULBS) COUPE, SEDAN DK BLU WIRE DK GRN WIRE ENGINE CONTROLS, TRANSMISSIONS SYSTEM GRY WIRE HAZARD SWITCH HEAD HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) LEFT BACKUP LAMP LEFT TAIL/ STOP LAMP LEFT TAIL/ TURN SIGNAL LAMP LEFT TURN SIGNAL IND LEFT TURN SIGNAL INPUT LEFT TURN SIGNAL LAMPS SUPPLY VOLT LICENSE LAMP LOGIC LT BLU WIRE OF DASH, ATTACHED TO BRAKE PEDAL BRACKET) OFF ORG/ WIRE PARK FUSE PARK LAMP RELAY CTRL PARK LAMP SUPPLY VOLT PREMIUM RIGHT BACKUP LAMP RIGHT FRONT MARKER LAMP (COUPE) LEFT FRONT MARKER LAMP (COUPE) RIGHT LEFT RIGHT TAIL/ STOP LAMP RIGHT TAIL/ TURN SIGNAL LAMP RIGHT TURN SIGNAL IND RIGHT TURN SIGNAL INPUT RIGHT TURN SIGNAL LAMPS SUPPLY VOLT SEDAN, COUPE STOP FUSE TURN SIGNAL/ MULTI-FUNCTION SWITCH TURN SWITCH TURN/HAZ SWITCH SUPPLY VOLT UNDERHOOD FUSE BLOCK (AT LEFT REAR SIDE OF ENGINE COMPT) UPPER STOP LAMP SWITCH (BELOW LEFT SIDE YEL WIRE

BLK WIRE BLOWER MOTOR (BEHIND LOWER RIGHT SIDE OF DASH, BEHIND GLOVE COMPT) BODY CONTROL MODULE (BCM) (AT LOWER CENTER OF DASH) BRN WIRE HI OFF HOT AT ALL TIMES HVAC CONTROL ASSEMBLY HVAC FAN SWITCH LOGIC LT BLU WIRE ORG/ WIRE RED WIRE RELAY RELAY CNTRL RUN WIRE TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT REAR SIDE OF ENGINE COMPARTMENT) YEL WIRE

31 16 A/C RELAY 459 1807 PPL CLASS 2 DATA 47 59 49 28 50 335 2751 380 2700 410 COOL FAN REL LOW REF A/C PRESS A/C CLUTCH RELAY 24 A/C COMPRESSOR CLUTCH (AT LOWER LEFT FRONT OF ENGINE) A/C DIODE 35 A/C FUSE 5 A/C IND A/C REFRIGERANT PRESSURE SENSOR (ON LOWER LEFT SIDE OF ENGINE, BELOW GENERATOR) A/C REQUEST A/C SWITCH BLEND BI-LVL HTR BLEND BI-LVL HTR RECIRC SWITCH BLK WIRE BLOWER MOTOR (BEHIND LOWER RIGHT SIDE OF DASH, BEHIND GLOVE COMPT) BODY CONTROL MODULE (BCM) (AT LOWER CENTER OF DASH) BRN WIRE CLASS 2 DATA COOLING FAN (AT FRONT OF ENGINE COMPT, ATTACHED TO RADIATOR) COOLING FAN FUSE 45 COOLING FAN RELAY 30 DEF VENT DK GRN WIRE DK GRN/WHT WIRE ECT SENS ENGINE CONTROL MODULE (ECM) (AT LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (2.2L: ON RIGHT REAR GRY WIRE HI OFF HOT AT ALL TIMES HOT IN RUN OR START HVAC CONTROL ASSEMBLY HVAC FAN SWITCH HI HVAC FUSE ILLUM LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MODE SWITCH OFF ORG/ WIRE PNK/WHT WIRE PPL RED WIRE RED/BLK WIRE RELAY RUN RELAY CTRL RUN WIRE RUN/ CRANK RELAY 28 TAN WIRE UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE

1 2 3 4 PPL 15 16 PNK WIRE 1589 1162 890 1161 PPL SENSOR SIG APP SENSOR 2 PRESSURE SEN APP SENSOR 1 1884 1807 1807 5069 CRUISE CTRL CLASS 2 DATA CLASS 2 DATA RELAY CTRL PPL PPL 379 420 1164 20 4 705 CPP SW SIG STOP LAMP SW PPL 419 447 STARTING/ CHARGING SYSTEM 9 10 PNK WIRE ACCELERATOR PEDAL POSITION (APP) SENSOR (BELOW LEFT SIDE OF DASH) AIR CONDITIONING SYSTEM BATTERY VOL BLK WIRE BRN WIRE BRN/WHT WIRE CLASS 2 DATA CLUTCH PEDAL POSITION (CPP) SWITCH (BELOW LEFT SIDE OF DASH) CLUTCH/ BRAKE FUSE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM INLINE FUSE EMISS FUSE 10 ENGINE CONTROL MODULE (ECM) (AT LEFT SIDE OF ENGINE COMPARTMENT) EVAP VENT SOL A/C CLUTCH RELAY FUEL PMP RLY GRY WIRE HOT AT ALL TIMES HOT IN ACC OR RUN HOT IN RUN OR START ID-IGN FUSE 11 IGN 1 VOL INJECTORS ECM/ FUSE 16 ETC FUSE 9 INSTRUMENT PANEL CLUSTER (IPC) IP BATT 2 FUSE 41 LOGIC LOW REF LOW REF LT BLU WIRE MALFUNC- TION INDICATOR LAMP MIL CONTROL RELAY COIL CTRL ORG/ WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN RELAY 29 PPL PPL LOW REF RED WIRE RUN/ CRANK RELAY 28 RUN/CRANK FUSE 38 SIDE OF ENGINE COMPARTMENT) START SW SIG STARTING/ CHARGING SYSTEM STOP LAMP SW ACC VOLTAGE TAN WIRE TRANS 2 FUSE 13 UNDERHOOD FUSE BLOCK (AT LEFT REAR WHT WIRE WHT/BLK WIRE YEL WIRE

AIR FLOW SENSING BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CMP SENSOR SIG LOW REF KNOCK SENSOR SIG GROUND COOLING FANS SYSTEM CRANKSHAFT POSITION (CKP) SENSOR (LOWER REAR OF ENGINE, BELOW OIL FILTER) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (AT LEFT SIDE OF ENGINE COMPARTMENT) EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID FUEL INJ 1 CTRL FUEL INJ 3 CTRL FUEL INJ 4 CTRL FUEL INJ 2 CTRL GRY WIRE IGN 1 VOL INTAKE AIR TEMPERATURE (IAT) SENSOR KNOCK SENSOR (KS) (LOWER LEFT SIDE OF ENGINE, BELOW THROTTLE BODY) LOW CTRL SENSOR VSS HIGH SIG VSS LOW SIG LOW REF LOW REFERENCE LOW REFERENCE HIGH SIG SENSOR LOW SIG SENSOR HIGH SIG SENSOR LOW SIG SENSOR PPL LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MAF/IAT SENSOR (ATTACHED TO AIR CLEANER OUTLET) NCA WIRE OF ENGINE) ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE PPL PPL TP SENSOR 2 SIG PPL/WHT WIRE PURGE SOL CTRL RED WIRE RED/BLK WIRE STARTING/CHARGING SYSTEM STARTING/CHARGING SYSTEM COMPUTER DATA LINES SYSTEM TAC MOTOR CTRL 1 TAC MOTOR CTRL 2 TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THROTTLE BODY (TOP LEFT SIDE TP SENSOR 1 SIG LOW REF WHT WIRE YEL WIRE