Lexus·Is300·2017 Lexus IS300·Wiring
Wiring diagram

2017 Lexus IS300 — power distribution

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Power distribution

2 1 1 2 1 2 A 30A 30A 80A H 10A 30A 100A E 150A 20A 80A 40A 50A 80A 30A 7.5A 15A 15A 50A 10A 40A 30A B C A K 120A 120A 50A 50A 50A 50A 30A 5A 50A ALT 80A 15A 10A 5A 20A 5A 10A ENGINE ROOM J/B 1 ASSEMBLY STARTER ASSEMBLY ENGINE ROOM R/B 1 ASSEMBLY INSTRUMENT PANEL J/B ASSEMBLY ENGINE ROOM J/B 2 ASSEMBLY SEMICONDUCTOR POWER INTEGRATION ECU ENGINE ROOM R/B 2 ASSEMBLY C32 B30 1B 1E 1G 1A C31 D32 1C 1D A1 I1 H1 BLK BLK BLK BLK BLK BLK BLU (OR BLK) BLK BLK BLK BLK LT GRN LT GRN LT GRN BLK BLK BLK BLU) WHT BLU BLK LT GRN BLU WHT RED BLK/ RED BLK GRN BLK RED BLK BLK BLK BLU RED WHT BLK BLK BLK DK GRN BLK/ GRY WHT BLK BLK BLK BLK WHT PNK GRY PNK WHT BLK (OR BLK/ RED BLK J/B LH-AM FUSE ALT-S FUSE ALT FUSE ENG-AM FUSE P/I-B FUSE BATTERY D/C CUT FUSE MPX-B 1 FUSE J/B LH-B FUSE EPS FUSE EPS-B FUSE VGRS FUSE ABS 2 FUSE ST 1 FUSE H-LP MAIN LH FUSE H-LP MAIN RH FUSE ENG-B FUSE PTC HTR 2 FUSE ABS 1 FUSE FAN 2 FUSE HTR FUSE PTC HTR 1 FUSE P/I-AM FUSE FUEL PMP FUSE H-LP CLN FUSE MIR HTR FUSE NOISE FILTER FUSE IG1-MAIN FUSE STRG HTR FUSE S-HORN FUSE ETCS FUSE STOP FUSE FAN FUSE DCM FUSE INJ FUSE HORN FUSE FAN 1 FUSE (RIGHT REAR OF ENGINE COMPT) (RIGHT REAR OF ENGINE COMPT) (RIGHT REAR OF ENGINE COMPT) (LEFT END OF DASH) (LEFT SIDE OF ENGINE COMPT) (LEFT SIDE OF ENGINE COMPT) 3.5L 2.0L TURBO (2.0L TURBO) W/ ADAPTIVE FRONT LIGHTING SYSTEM W/O ADAPTIVE FRONT LIGHTING SYSTEM (3.5L) (2.0L TURBO) XA TO ENGINE ROOM J/B 2 ASSEMBLY (DIAGRAM 1 OF 4) TO ENGINE ROOM J/B 2 ASSEMBLY (DIAGRAM 2 OF 4) STARTING/ CHARGING SYSTEM TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) ENGINE CONTROLS SYSTEM STARTING/ CHARGING SYSTEM AIR CONDITIONING & COOLING FANS SYSTEMS AIR CONDITIONING SYSTEM TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 3 OF 4) AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM HEADLIGHTS SYSTEM STARTING/ CHARGING SYSTEM ELECTRONIC POWER STEERING SYSTEM ANTI-LOCK BRAKES SYSTEM ELECTRONIC POWER STEERING SYSTEM ELECTRONIC POWER STEERING SYSTEM MEMORY & MIRRORS SYSTEMS DOOR LOCKS, POWER WINDOWS, AIR CONDITIONING, SEATS, ANTI-THEFT, WIPER/WASHER, HEADLIGHTS, WARNING, EXTERIOR LIGHTS, MEMORY, POWER TOPS, ANTI-LOCK BRAKES, MIRRORS, NAVIGATION, TRANSMISSIONS, SOUND, INSTRUMENT CLUSTER, ENGINE CONTROLS, STARTING/CHARGING, CRUISE CONTROL, COMPUTER DATA LINES, SUPPLEMENTAL RESTRAINTS, ELECTRONIC SUSPENSION, INTERIOR LIGHTS & ELECTRONIC POWER STEERING SYSTEMS FROM ENGINE ROOM J/B 1 (DIAGRAM 1 OF 4) ANTI-THEFT & DOOR LOCKS SYSTEMS DOOR LOCKS, ANTI-THEFT, EXTERIOR LIGHTS, ENGINE CONTROLS, CRUISE CONTROL, ANTI-LOCK BRAKES, SHIFT INTERLOCK & TRANSMISSIONS SYSTEMS AIR CONDITIONING & COOLING FANS SYSTEMS SEATS SYSTEM HORNS SYSTEM ANTI-THEFT & DOOR LOCKS SYSTEMS WIPER/WASHER SYSTEM AIR CONDITIONING & COOLING FANS SYSTEMS DEFOGGER SYSTEM NAVIGATION SYSTEM ENGINE CONTROLS SYSTEM TO ENGINE ROOM R/B 2 ASSEMBLY (DIAGRAM 2 OF 4) TO ENGINE ROOM R/B 2 ASSEMBLY (DIAGRAM 2 OF 4)
D F IG BATT G 10A 10A 15A 20A 25A 15A E 15A 20A 5A 5A 5A 25A 5A 20A 10A C B ENGINE ROOM R/B 2 ASSEMBLY J/C 1 (A69) GROUND J/C 1 (A73) ENGINE ROOM J/B 2 ASSEMBLY SEMICONDUCTOR POWER INTEGRATION ECU A/F RELAY H-LP LH-LO RELAY H-LP RH-LO RELAY EFI-MAIN RELAY D11 17 18 F2 G4 G3 F4 E1 B1 1 3 5 2 3 1 2 GRN GRN GRN BLU BLK BLK BLK BLK GRN GRN BLU GRN BLK LT GRN WHT BLK BLU BLU RED WHT/ BLK BLK WHT/ RED RED WHT/ BLK BLK WHT/ GRN GRN IG1 MAIN RELAY RADAR-IG FUSE ALT-IG FUSE ENG-IG 2 FUSE EPS-IG FUSE WIPER FUSE WASHER FUSE AVS FUSE ENG-IG 1 FUSE WIRING HARNESS CONDENSER ASSEMBLY 1 H-LP RH-LO FUSE IG2-MAIN FUSE EFI-MAIN FUSE H-LP LH-LO FUSE A/F FUSE IG2 RELAY P INJ FUSE IG2 FUSE (LEFT SIDE OF ENGINE COMPT) (RIGHT REAR OF ENGINE COMPT) (LEFT SIDE OF ENGINE COMPT) (LEFT REAR OF ENGINE COMPT) (RIGHT REAR OF ENGINE COMPT) (LEFT SIDE OF ENGINE COMPT) AE AC FROM ENGINE ROOM R/B 2 ASSEMBLY (DIAGRAM 1 OF 4) FROM ENGINE ROOM R/B 2 ASSEMBLY (DIAGRAM 1 OF 4) ELECTRONIC SUSPENSION SYSTEM WIPER/WASHER SYSTEM ELECTRONIC POWER STEERING SYSTEM CRUISE CONTROL SYSTEM FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) STARTING/ CHARGING SYSTEM WIPER/WASHER SYSTEM AIR CONDITIONING & COOLING FANS SYSTEMS FROM ENGINE ROOM J/B 1 ASSEMBLY (DIAGRAM 1 OF 4) ENGINE CONTROLS & TRANSMISSIONS SYSTEMS CRUISE CONTROL, ENGINE CONTROLS & TRANSMISSIONS SYSTEMS TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 3 OF 4) FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) ENGINE CONTROLS SYSTEM
J M L BECU O O N 10A 30A 30A 30A 20A 7.5A 7.5A 30A 30A 30A 15A 10A 10A 5A 15A 15A 7.5A 20A 5A H 7.5A 7.5A 7.5A 7.5A SS2 SS1 ACCD IG1D AGND G SSW2 SSW1 +B INSTRUMENT PANEL J/B ASSEMBLY DOME CUT RELAY MAIN BODY ECU CERTIFICATION ECU ENGINE SWITCH INSTRUMENT PANEL J/B ASSEMBLY FUEL LOCK RELAY L/D DR UNLOCK RELAY ALL DR LOCK RELAY D DR UNLOCK RELAY 31 C19 A8 A28 A27 A44 A43 C9 A53 D30 A15 D20 A31 A11 A13 B8 A14 A1 D4 D5 A56 A32 B15 D27 A21 A30 A50 A10 A3 F1 K6 9 3 5 6 1 A22 12 A13 K6 18 16 10 C2 (OR BLK) BLK BLK RED YEL BLU LT VIO BLK BLK LT GRN BLK BLK BLU WHT VIO ORG LT BLU BLK GRN BLK GRN LT BLU BLU GRN GRN BLK LT GRN ORG BLK PNK VIO GRY LT GRN BLU LT GRN BLU GRY ORG WHT DOME FUSE STRG LOCK FUSE AM2 FUSE METER FUSE D/L FUSE J/B-B FUSE IGN 2 FUSE A/BAG-IG2 FUSE IGN 1 FUSE ODS FUSE ECU-B FUSE AMP 1 FUSE AMP 2 FUSE RADIO FUSE HAZ FUSE SMART FUSE DOOR R/R FUSE DOOR F/R FUSE P/SEAT F/R FUSE J/B-AM FUSE RR SHADE FUSE OBD FUSE TI & TE FUSE (LEFT END OF DASH) (RIGHT END OF DASH) (LEFT END OF DASH) (NOT USED) (NOT USED) FROM ENGINE ROOM J/B 2 ASSEMBLY (DIAGRAM 2 OF 4) FROM ENGINE ROOM R/B 1 ASSEMBLY (DIAGRAM 1 OF 4) TO ALL DR LOCK RELAY (DIAGRAM 3 OF 4) SUPPLEMENTAL RESTRAINTS SYSTEM SHIFT INTERLOCK, DOOR LOCKS & ANTI-THEFT SYSTEMS SHIFT INTERLOCK, DOOR LOCKS & ANTI-THEFT SYSTEMS SUPPLEMENTAL RESTRAINTS SYSTEM NAVIGATION SYSTEM INTERIOR LIGHTS SYSTEM ELECTRONIC POWER STEERING SYSTEM NAVIGATION & SOUND SYSTEMS NAVIGATION & SOUND SYSTEMS INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER & EXTERIOR LIGHTS SYSTEMS ANTI-THEFT SYSTEM COMPUTER DATA LINES SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS, TRANSMISSIONS, CRUISE CONTROL & EXTERIOR LIGHTS SYSTEMS TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) FROM ECU-ACC FUSE (DIAGRAM 4 OF 4) FROM ACC RELAY (DIAGRAM 4 OF 4) FROM D/L FUSE (DIAGRAM 3 OF 4) MEMORY & ELECTRONIC POWER STEERING SYSTEMS SEATS SYSTEM POWER TOPS SYSTEM WARNING, MEMORY, DOOR LOCKS & ANTI-THEFT SYSTEMS MIRRORS & MEMORY SYSTEMS POWER WINDOWS SYSTEM POWER WINDOWS SYSTEM COMPUTER DATA LINES SYSTEM
J F D M 1 GND L TRLY 7.5A 15A IG ACC E B N 30A 20A K 7.5A 7.5A 30A 30A 7.5A 7.5A 5A 7.5A 10A 10A 10A 10A 15A 5A 15A 10A INSTRUMENT PANEL J/B ASSEMBLY MAIN BODY ECU BKUP LP RELAY J/C 1 (A69) TRUNK OPEN RELAY MAIN BODY ECU 11 A23 11 10 8 A42 A19 A55 C5 D19 14 A12 D3 C17 C10 A52 D29 C21 D28 A39 32 D34 A54 C3 C12 C13 D14 D15 30 B13 B12 D21 C20 D13 3 1 B1 C11 B19 B7 A33 C23 A49 B32 C22 E1 C19 A35 D6 A16 VIO GRY VIO BLK GRN GRN RED VIO BLK GRN LT GRN BLK BLU RED RED WHT BLK BLU YEL ORG GRN GRY RED RED GRN BLK LT BLU GRN GRN GRY BLK BLK PNK BLU BLK WHT/ BLK WHT/ BLK LT GRN VIO PNK BLK WHT/ BLK WHT/ BLK IG1 2 RELAY IG1 1 RELAY IG1 3 RELAY ECU-IG1 1 FUSE S/HTR F/R FUSE S/HTR F/L FUSE IG1 2 FUSE IG1 1 FUSE WIPER SW-IG FUSE BKUP LP FUSE ECU-IG1 2 FUSE IG1 3 FUSE TAIL RELAY P/OUTLET 1 FUSE ECU-ACC FUSE DOOR R/L FUSE A/C FUSE TRUNK OPN FUSE P/SEAT F/L FUSE P/W FUSE DOOR F/L FUSE S/ROOF FUSE PANEL FUSE P/OUTLET RELAY ACC RELAY TAIL FUSE POWER OUTLET SOCKET ASSEMBLY (LEFT END OF DASH) (LEFT SIDE OF ENGINE COMPT) (RIGHT KICK PANEL) (LEFT KICK PANEL) KC KA (NOT USED) (NOT USED) (NOT USED) FROM CERTIFICATION ECU (DIAGRAM 3 OF 4) TO ENGINE ROOM J/B 2 ASSEMBLY (DIAGRAM 2 OF 4) TO ENGINE ROOM R/B 2 ASSEMBLY (DIAGRAM 2 OF 4) FROM ENGINE ROOM J/B 1 ASSEMBLY (DIAGRAM 1 OF 4) TRANSMISSIONS SYSTEM POWER TOPS, PASSIVE RESTRAINTS, DOOR LOCKS, ANTI-THEFT, MIRRORS, WARNING & MEMORY SYSTEMS ANTI-LOCK BRAKES SYSTEM NAVIGATION SYSTEM SHIFT INTERLOCK SYSTEM CRUISE CONTROL, WIPER/WASHER, MIRRORS, POWER TOPS & NAVIGATION SYSTEMS SEATS SYSTEM SEATS SYSTEM HEADLIGHTS & WIPER/ WASHER SYSTEMS CRUISE CONTROL, TRANSMISSIONS & EXTERIOR LIGHTS SYSTEMS ANTI-LOCK BRAKES & ELECTRONIC POWER STEERING SYSTEMS ENGINE CONTROLS, EXTERIOR LIGHTS, POWER WINDOWS NAVIGATION, SOUND & TRANSMISSIONS SYSTEMS WIPER/ WASHER SYSTEM AIR CONDITIONING & HEADLIGHTS SYSTEMS AIR CONDITIONING, MEMORY, MIRRORS, ANTI-LOCK BRAKES, DEFOGGER, NAVIGATION & ELECTRONIC POWER STEERING SYSTEMS CRUISE CONTROL, COMPUTER DATA LINES, NAVIGATION & WARNING SYSTEMS AIR CONDITIONING, SEATS, NAVIGATION, SOUND, CRUISE CONTROL, DEFOGGER & TRANSMISSIONS SYSTEMS TO TI & TE FUSE (DIAGRAM 3 OF 4) TO L/D DR UNLOCK RELAY (DIAGRAM 3 OF 4) MIRRORS & MEMORY SYSTEMS INSTRUMENT CLUSTER, COMPUTER DATA LINES & INTERIOR LIGHTS SYSTEMS TRANSMISSIONS, NAVIGATION, SOUND & CRUISE CONTROL SYSTEMS AIR CONDITIONING & DEFOGGER SYSTEMS POWER WINDOWS, MIRRORS & MEMORY SYSTEMS EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM SEATS & MEMORY SYSTEMS POWER WINDOWS SYSTEM POWER WINDOWS SYSTEM FROM CERTIFICATION ECU (DIAGRAM 3 OF 4) NAVIGATION & SOUND SYSTEMS POWER TOPS SYSTEM