Chevrolet·Corvette·2003 Chevrolet Corvette·Wiring
Wiring diagram

2003 Chevrolet Corvette — power distribution

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Power distribution

N M 10A 20A 20A 10A 20A D 10A D 10A C 30A 10A B C 15A 30A 10A 20A B 40A 10A A FUSE BLOCK- UNDERHOOD BATTERY COOL FAN 1 RELAY 45 STARTER POWERTRAIN CONTROL MODULE (PCM) ELECTRONIC BRAKE CONTROL MODULE (EBCM) HEADLAMP DOOR CONTROL MODULE GENERATOR FUSE BLOCK-UNDERHOOD COOL FAN 2 RELAY 43 RTD RELAY 41 BACKUP LP RELAY 38 HORN RELAY 36 FOG LP RELAY 39 HORN ASSEMBLY FOG LAMP/REAR COMPARTMENT LID RELEASE SWITCH LEFT FOG LAMP RIGHT FOG LAMP FUSE BLOCK-UNDERHOOD AIR PMP RELAY 33 DRL R RELAY 38 DRL L RELAY 40 FUSE BLOCK-I/P POWERTRAIN CONTROL MODULE (PCM) ELECTRONIC SUSPENSION CONTROL (ESC) MODULE FUSE BLOCK- UNDERHOOD AIR PMP RELAY 33 EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID SKIP SHIFT SOLENOID STOPLAMP SWITCH REVERSE INHIBIT SOLENOID CRUISE PEDAL POSITION SWITCH SECONDARY AIR INJECTION (AIR) SOLENOID AUTOMATIC TRANSMISSION (A/T) MASS AIR FLOW (MAF) SENSOR C1 A F4 C3 A D A C1 B1 B C5 C3 E4 C1 A C2 D1 5 B A9 C3 C3 F2 B2 C1 E3 B B B B7 C1 19 A3 C1 F11 A9 C1 C2 B9 C2 B7 C1 C1 C A E D B 57 20 B E7 C1 B6 C3 E6 C6 B E A ORG NCA PNK PPL PNK RED PPL PPL DK GRN BLK/ WHT WHT BLK/ PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK ORG ORG ORG ORG RED RED RED RED RED RED RED G106 HDLPMOTRH FUSE 3 ABS FUSE 52 ABS ELEC FUSE 53 HDLPMOTLH FUSE 4 COOLFAN1 FUSE 49 PCM B FUSE 23 FUSIBLE LINK FUSIBLE LINK COOLFAN 2 FUSE 46 APROACH FUSE 2 RTD FUSE 7 FOG LP FUSE 6 HORN FUSE 11 RTD FUSE 51 AIR PMP FUSE 50 PCM FUSE 16 IGN RELAY 42 ENG IGN 1 FUSE 19 (ON RIGHT REAR OF ENGINE COMPART- MENT) (ON RIGHT REAR OF ENGINE COMPARTMENT) (ON RIGHT REAR OF ENGINE COMPARTMENT) (IN RIGHT FRONT FOOTWELL, MOUNTED TO TOE BOARD) (ENGINE HARNESS, APPROX 15 CM (5.9 IN) FROM MAIN HARNESS IN BRANCH LEADING TO POWERTRAIN CONTROL MODULE (PCM)) (RIGHT SIDE OF ENGINE, ABOVE STARTER) (ON RIGHT REAR OF ENGINE COMPARTMENT) (TRANSMISSION HARNESS, APPROX 6.5 CM (2.5 IN) FROM 10 CAVITY IN-LINE CONNECTOR, TO FUEL TANK JUMPER HARNESS) (DASH HARNESS, 7.5 CM (2.9 IN) RIGHT OF BRAKE SWITCH CONNECTORS BREAKOUT) (NOT USED) (20 GA- GRAY) (10 GA- RUST) (NOT USED) (M/T) (M/T) (M/T) S120 S400 S213 TO FUSE BLOCK-I/P (DIAGRAM 2 OF 4) TO APROACH FUSE 2 (DIAGRAM 1 OF 4) TO IGN RELAY 42 (DIAGRAM 1 OF 4) FROM COOL FAN FUSE 49 (DIAGRAM 1 OF 4) FROM COOL FAN 2 FUSE 46 (DIAGRAM 1 OF 4) FROM F/PMP FUSE 13 (DIAGRAM 4 OF 4) TO ENG IGN 1 FUSE 19 (DIAGRAM 1 OF 4) TO THROT-CONT FUSE 17 (DIAGRAM 4 OF 4) FROM IGN RELAY 42 (DIAGRAM 1 OF 4)
A 20A ACT CONT- 30A 10A 60A 20A 20A 20A 40A 10A 10A 25A 25A 60A H F 60A J 15A 10A G G 20A 20A E 15A 15A 20A E 10A FUSE BLOCK-I/P RRDEFOG RELAY 44 RADIO DRIVER SEAT CONTROL MODULE (SCM) CD CHANGER- REMOTE PLAYBACK DEVICE DRIVER SEAT ADJUSTER SWITCH RADIO POWER ANTENNA DRIVER SEAT CONTROL MODULE (SCM) DRIVER DOOR MODULE (DDM) PASSENGER DOOR MODULE (PDM) BOSE SIGNAL PROCESSOR DRIVER SEAT RELAY CENTER FUSE BLOCK- I/P SPLICE PACK 201 PASSENGER SEAT RELAY CENTER PASSENGER SEAT PUMP PASSENGER SEAT RELAY CENTER STOP- LAMP SWITCH PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT PUMP HAZARD SWITCH THEFT DETERRENT RELAY FUSE BLOCK-I/P BOSE RELAY 45 HTCHTRK REL RELAY 39 TONN REL RELAY 41 BLOWER MOTOR CONTROL PROCESSOR BLOWER MOTOR CONTROL PROCESSOR BLOWER MOTOR RELAY SPLICE PACK 202 HVAC CONTROL MODULE HVAC CONTROL MODULE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) FUEL DOOR LOCK RELEASE SWITCH TRACTION/ SUSPENSION CONTROL SWITCH FOG LAMP/ REAR COMPARTMENT LID RELEASE SWITCH C1 C1 10 D 10 C1 E12 F B C2 C2 C3 A8 A C1 A C8 C2 B C6 C4 B F12 C3 B7 F9 C1 A C12 C1 C1 1 E B G C1 A C6 B M A C1 C2 A B B2 C3 C3 B2 A C2 D1 C1 20 K 3 B1 C2 C3 A D2 C2 E1 C2 E8 A C3 C3 A 3 C1 C1 20 3 B9 C11 1 C1 C3 A C1 B11 B12 A C3 C1 K B2 1 C12 A12 E3 C3 5 E3 RED BLK ORG/ ORG ORG ORG ORG ORG BLK NCA ORG RED RED ORG ORG RED RED ORG ORG ORG ORG ORG ORG ORG RED RED RED BLK ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG G201 G202 RRDEFOG FUSE 48 SCM L FUSE 4 RDO/CD FUSE 5 RDO/ANT FUSE 24 DCM R FUSE 30 DCM L FUSE 33 PWRFDR FUSE 31 PWR DL FUSE 34 PWR ST/ DRV CIRCUIT BREAKER 35 PWR ST/PAS CIRCUIT BREAKER 36 IGN1 FUSE 47 LUMBAR FUSE 3 CNSL CIG FUSE 1 STARTER FUSE 52 STP/HAZ FUSE 8 AUXILIARY POWER DROP CONNECTOR TONN REL FUSE 17 F/TNKDR FUSE 32 IGN2 FUSE 50 HVACCON FUSE 27 BLO MOT FUSE 51 C/LTR FUSE 7 BOSE FUSE 28 CIGAR LIGHTER (IN RIGHT FRONT FOOTWELL, MOUNTED TO TOE BOARD) (IN RIGHT FRONT FOOTWELL, MOUNTED TO TOE BOARD) (RIGHT POWER SEAT HARNESS, APPROX 4.0 CM (1.5 IN), FROM BREAKOUT FOR RIGHT SEAT RELAY CENTER CONNECTOR C1) (IN DASH HARNESS) (IN RIGHT FRONT FOOTWELL, MOUNTED TO TOE BOARD) (DASH HARNESS, APPROXIMATELY 22.5 CM (8.8 IN) FROM ELECTRONIC ACCESSORY PLUG CONNECTOR) (IN DASH HARNESS) IF EQUIPPED SPORT SEAT BASE SEAT SPORT SEAT W/O CD PLAYER W/CD PLAYER BASE SEAT REMOTE PLAYBACK DEVICE- CD CHANGER (DEALER INSTALLED) (CONVERTIBLE) (W/ POWER LUMBAR) WIRE ENDS TAPED TO I/P HARNESS AUTOMATIC A/C MANUAL A/C (MANUAL A/C) (AUTO A/C) (MANUAL A/C) (W/LUMBAR) S300 S212 FROM FUSE BLOCK-UNDERHOOD (DIAGRAM 1 OF 4) TO LUMBAR MINI FUSE 3 (DIAGRAM 2 OF 4) FROM RDO/CD FUSE 5 (DIAGRAM 2 OF 4) TO BLO MOT FUSE 51 (DIAGRAM 2 OF 4) TO IGNITION SWITCH (DIAGRAM 3 OF 4) FROM STARTER FUSE 52 (DIAGRAM 2 OF 4) TO PK T/LP FUSE 6 (DIAGRAM 3 OF 4) TO IGNITION SWITCH (DIAGRAM 3 OF 4)
10A 10A 10A 10A 10A 10A 20A 10A J H F K ON ON L 25A 10A 20A 10A START BULB ON ACC OFF TEST START BULB ON ACC OFF TEST START BULB ACC OFF TEST TEST OFF ACC BULB START ALC HDLP RELAY 44 CTSY LP RELAY 42 ALC PRK LP RELAY 43 FUSE BLOCK- I/P FUSE BLOCK- UNDERHOOD I/P COMPARTMENT LAMP DATA LINK CONNECTOR (DLC) INSTRUMENT PANEL CLUSTER (IPC) STEERING COLUMN LOCK RELAY A/T SHIFT LOCK CONTROL SOLENOID MULTIFUNCTION TURN SIGNAL LEVER BODY CONTROL MODULE (BCM) UNDERHOOD LAMP LEFT VANITY MIRROR LAMP INSIDE REARVIEW MIRROR RIGHT VANITY MIRROR LAMP FUSE BLOCK-I/P PARK/ NEUTRAL POSITION (PNP) SWITCH BACKUP LAMP SWITCH BODY CONTROL MODULE (BCM) FUSE BLOCK- UNDERHOOD INSIDE REARVIEW MIRROR CLUTCH PEDAL START SWITCH PARK/ NEUTRAL POSITION (PNP) SWITCH WINDSHIELD WIPER MOTOR WINDSHIELD WIPER/ WASHER SWITCH C1 A C2 A C4 A1 F4 E4 D4 C2 B7 C A C1 C1 C1 C1 C3 A3 C2 F3 B1 C1 A1 C2 C4 E2 A12 C1 A4 C1 F8 C1 16 A11 C2 A X W C3 A4 A14 A C2 D2 B7 Z B C2 A7 C2 E C1 A C1 E8 C2 D8 C219 C B C2 D12 D3 C1 A3 C2 B3 C2 C C1 C C1 A E C5 C2 D5 B C2 A F3 C1 DK BLU ORG BRN NCA ORG RED ORG NCA ORG NCA NCA NCA BLK RED RED YEL BRN BRN BRN ORG ORG ORG ORG ORG ORG ORG DK BLU RED ORG ORG RED RED ORG NCA NCA ORG ORG ORG ORG NCA PNK RED YEL YEL YEL YEL YEL YEL YEL ORG BRN PPL PPL PPL YEL RED C/LALDL FUSE 29 PK T/LP FUSE 6 HDLP CIRCUIT BREAKER 54 MONIT- ORED LD FUSE 2 BCM1 & IPC FUSE 25 BCM2 FUSE 23 MONITO- RED LD RELAY 37 IGNITION SWITCH CRK FUSE 14 WSW FUSE 10 BCM A FUSE 9 ASRY OFF FUSE 11 BTISBU FUSE 21 BCM 13 FUSE 22 (IN RIGHT FRONT FOOTWELL, MOUNTED TO TOE BOARD) (ON RIGHT REAR OF ENGINE COMPARTMENT) (DASH HARNESS, APPROXIMATELY 22.5 CM (8.8 IN) FROM INSIDE REARVIEW MIRROR BREAKOUT) (IN RIGHT FRONT FOOTWELL, MOUNTED TO TOE BOARD) (ON RIGHT REAR OF ENGINE COMPARTMENT) IF EQUIPPED (NOT USED) (NOT USED) A/T M/T WIRE ENDS TAPED TO I/P HARNESS A/T M/T S200 FROM C/LTR FUSE 7 (DIAGRAM 2 OF 4) FROM FUSE BLOCK-I/P IGN1 FUSE 47 (DIAGRAM 2 OF 4) FROM FUSE BLOCK-I/P IGN2 FUSE 50 (DIAGRAM 2 OF 4) TO FUSE BLOCK-I/P (DIAGRAM 4 OF 4) TO HVAC FUSE 18 (DIAGRAM 4 OF 4)
N 15A 15A 20A COIL 10A 10A 10A 10A 10A 15A 20A 15A M 10A L 15A K 10A FUSE BLOCK-UNDERHOOD FUSE BLOCK- I/P RRDEFOG RELAY 46 RIGHT AIR TEMPERATURE ACTUATOR HVAC CONTROL MODULE HVAC CONTROL MODULE ELECTRONIC BRAKE CONTROL MODULE (EBCM) ELECTRONIC SUSPENSION CONTROL (ESC) MODULE HEATED OXYGEN SENSOR (HO2S) B1S1 HEATED OXYGEN SENSOR (HO2S) B2S1 HEATED OXYGEN SENSOR (HO2S) B1S2 HEATED OXYGEN SENSOR (HO2S) B2S2 AIR TEMPERATURE ACTUATOR VACUUM CONTROL ASSEMBLY BLOWER MOTOR RELAY LEFT AIR TEMPERATURE ACTUATOR FUSE BLOCK- I/P COOL FAN 2 RELAY 43 COOL FAN 3 RELAY 44 F/PMP RELAY 35 FUSE BLOCK-UNDERHOOD IGNITION COIL/ MODULE 4 IGNITION COIL/ MODULE 2 IGNITION COIL/ MODULE 6 IGNITION COIL/ MODULE 8 INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE (SDM) INFLATABLE RESTRAINT IP MODULE DISABLE SWITCH INSTRUMENT PANEL CLUSTER (IPC) BODY CONTROL MODULE (BCM) MULTIFUNCTION TURN SIGNAL LEVER HAZARD SWITCH FUSE BLOCK- UNDERHOOD A/C CLU RELAY 34 FUEL INJECTOR 3 FUEL INJECTOR 7 FUEL INJECTOR 4 FUEL INJECTOR 8 FUEL INJECTOR 5 FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 6 THROTTLE ACTUATOR CONTROL (TAC) MODULE IGNITION COIL/ MODULE 5 IGNITION COIL/ MODULE 1 IGNITION COIL/ MODULE 3 IGNITION COIL/ MODULE 7 C1 B C3 E8 C1 B12 B C2 A11 C1 D5 D D D D D D C1 E2 C2 A7 C1 F7 A1 B1 F2 C1 E5 D5 B5 C1 C5 D D A A A A A A A A6 A C2 7 D1 C1 E5 F5 A5 C2 B6 C4 A13 C1 E6 A1 C2 D13 C B8 C1 E6 F7 E7 F7 C2 C5 5 C2 C2 F7 F6 C2 C2 6 5 10 C1 C F6 YEL BLK PNK/ PNK BRN BRN PNK PNK ORG ORG PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK YEL PNK NCA NCA BRN NCA BRN NCA BRN BRN BRN BRN BRN BRN BRN BRN BRN NCA HVAC FUSE 18 OXY SEN FUSE 15 ABSTRNS FUSE 5 COOLFAN 3 FUSE 14 F/PMP FUSE 13 IPC FUSE 19 BCM 11 FUSE 13 SDM FUSE 16 HZDT/SG FUSE 15 CR CONT FUSE 20 INJR2 FUSE 18 INJR1 FUSE 22 THROT- CONT FUSE 17 A/C FUSE 24 (ON RIGHT REAR OF ENGINE COMPARTMENT) (IN RIGHT FRONT FOOTWELL, MOUNTED TO TOE BOARD) (IN RIGHT FRONT FOOTWELL, MOUNTED TO TOE BOARD) (ON RIGHT REAR OF ENGINE COMPARTMENT) (RIGHT IGNITION CONTROL MODULE JUMPER HARNESS, APPROX 5 CM (1.9 IN) FROM, 8 CAVITY IN-LINE CONNECTOR, TOP CENTER OF VALVE COVER) (ON RIGHT REAR OF ENGINE COMPARTMENT) (LEFT IGNITION CONTROL MODULE HARNESS, APPROX 5 CM (1.9 IN) FROM BREAKOUT FOR 8 CAVITY IN-LINE CONNECTOR, TOP CENTER OF VALVE COVER) W/ AUTO A/C W/ AUTO A/C W/ MANUAL A/C W/ MANUAL A/C (IF EQUIPPED) S102 S103 FROM BTSIBU FUSE 21 (DIAGRAM 3 OF 4) FROM IGNITION SWITCH CONNECTOR C2, CAVITY B (DIAGRAM 3 OF 4) FROM PCM FUSE 16 (DIAGRAM 1 OF 4) FROM IGN RELAY 42 (DIAGRAM 1 OF 4)