Lexus·Nx300H·2018 Lexus NX300H·Wiring
Wiring diagram

2018 Lexus NX300H — power distribution

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Power distribution

1 2 1 2 1 2 25A 15A X W ASEL E TAIL B+ PGND DIS ACC A U N D 10A S H E 20A 5A 5A AGND SS1 SS2 GND C B SSW1 SSW2 ACCD IG1D +B 20A 25A 30A 20A 10A 30A 7.5A 20A 50A 30A 15A 30A 120A 30A 30A 30A 10A 80A 30A 7.5A 50A 10A 10A 10A 10A 20A 80A 140A ENGINE ROOM J/B 1 ENGINE ROOM R/B 1 BATTERY IGCT RELAY ENGINE ROOM R/B 1 CERTIFICATION ECU ASSEMBLY POWER SWITCH J/C 14 (I82) 21 I52 21 15 11 10 1 5 KI1 2 12 11 10 9 8 7 6 3 2 1 4 5 Q41 t4 2 5 3 1 1C AI13 23 I53 12 6 5 1 I53 16 9 3 I51 18 10 3 B1 A1 1D (OR BLK) BLK LT GRN WHT/BLK WHT/BLK WHT/BLK WHT/BLK BLK LT GRN WHT/BLK VIO GRY BLU WHT/BLK BRN WHT BLK YEL RED WHT/BLK RED WHT/BLK RED YEL RED BLK RED RED RED RED WHT PNK PNK LT GRN GRN LT GRN WHT BLU GRN WHT BLK BLK RED BLU BLK RED WHT BLK WHT BLK BLK RED PNK RED RED PNK BLK BLK BLK BLK WHT BLU BLU BLU BLK RED RED BLU BLK/WHT BLK BLK BLK/WHT FUSE BLOCK ASSEMBLY D/C D/C-S FUSE DC/DC FUSE D/L 1 FUSE ECU-B 3 FUSE H-LP MAIN LH/H-LP MAIN HI FUSE STRG LOCK FUSE INV W/ PMP FUSE EPS FUSE EPB 2 FUSE ETCS FUSE ECU-B 5 FUSE ABS MTR 2 FUSE ABS MAIN 2 FUSE AMP FUSE EPB 1 FUSE TOWING FUSE FUSIBLE LINK BLOCK ASSEMBLY R/B RR B FUSE MAIN FUSE H-LP MAIN RH/H-LP MAIN LO FUSE R/B RH-B FUSE EFI- MAIN 2 FUSE EFI- MAIN 1 FUSE TURN & HAZ FUSE IG2 MAIN FUSE D/C CUT FUSE ABS MTR 1 FUSE METER 1 FUSE AM2 FUSE ABS MAIN 1 FUSE RADIO FUSE ECU-B 4 FUSE IGCT FUSE IG2 MAIN RELAY IGN FUSE MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (LEFT SIDE OF ENGINE COMPT) (LEFT SIDE OF ENGINE COMPT) (ON-BOARD ELECTRICAL SYSTEM BATTERY POSITIVE (+) TERMINAL) (LEFT SIDE OF ENGINE COMPT) (LEFT FRONT CORNER OF ENGINE COMPT) (RIGHT END OF DASH) (UPPER RIGHT SIDE OF DASH) (LOWER RIGHT CENTER OF DASH) (NOT USED) EARLY PRODUCTION LATE PRODUCTION AC IF IE TRUNK, TAILGATE, FUEL DOORS, DOOR LOCKS & ANTI-THEFT SYSTEMS TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 3 OF 5) TO ENGINE ROOM J/B 2 (DIAGRAM 2 OF 5) TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 5) ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM HEADLIGHTS SYSTEM NAVIGATION, SOUND & ANTI-THEFT SYSTEMS ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM ELECTRONIC POWER STEERING SYSTEM ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES SYSTEM SHIFT INTERLOCK SYSTEM SHIFT INTERLOCK SYSTEM NAVIGATION & SOUND SYSTEMS ANTI-LOCK BRAKES & ELECTRONIC POWER STEERING SYSTEMS INSTRUMENT CLUSTER SYSTEM NAVIGATION & SOUND SYSTEMS ANTI-LOCK BRAKES SYSTEM TO ENGINE ROOM R/B 2 (DIAGRAM 5 OF 5) HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM ENGINE CONTROLS SYSTEM TO ENGINE ROOM R/B 2 (DIAGRAM 5 OF 5) TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 5) TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 5) FROM J/C 7 (I73) (DIAGRAM 5 OF 5) FROM J/C 25 (I137) (DIAGRAM 5 OF 5) INTERIOR LIGHTS SYSTEM ENGINE CONTROLS SYSTEM TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 2 OF 5) FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 5)
25A L 50A 30A 30A K 10A 50A K 50A 15A 30A 20A 30A ACC1 ACC2 IG GND AC2 AC1 J 15A 7.5A 15A H 10A 5A 30A 20A 80A 5A 7.5A 5A 10A 5A A INSTRUMENT PANEL J/B ASSEMBLY J/C 7 (I73) ENGINE ROOM R/B 2 ENGINE ROOM J/B 2 R/B ASSEMBLY ENGINE ROOM R/B 2 13 14 12 C36 D8 D35 B40 B20 B33 C13 B13 C2 2 1 IQ3 10 1 4 1 3 2 5 4 6 8 7 AI13 26 3 1 5 2 A1 B5 BLU BLU RED WHT/BLK BLK BLK YEL BLK BLK BLK LT BLU BLK BLK WHT/BLK BLK WHT WHT WHT BLU BLU BLK RED RED PNK BLK BLK WHT BLK BLK WHT/BLK WHT BLK BLK BLK WHT/BLK RED BLK BLK RED YEL BLU RED RED BLU BLK YEL A/BAG FUSE METER 2 FUSE IG2 3 FUSE IG2 2 FUSE IG2 1 FUSE A/C W/ PMP FUSE TOWING BRK FUSE RR S/HTR FUSE DEICER FUSE H-LP CLN FUSE INV FUSE FOG FR FUSE DEF FUSE FAN FUSE P/SEAT F/R FUSE MIRROR FUSE DRL FUSE STRG HTR FUSE DOOR R/R FUSE INV RELAY CAPACITOR FUSE HTR FUSE PTC HTR 1 FUSE PTC HTR 2 FUSE PTC HTR 3 FUSE WIRING HARNESS CONDENSER ASSEMBLY 1 VOLTAGE INVERTER ASSEMBLY POWER OUTLET SOCKET ASSEMBLY 2 (LEFT END OF DASH) (LEFT END OF DASH) (RIGHT SIDE OF ENGINE COMPT) (RIGHT SIDE OF ENGINE COMPT) (UPPER CENTER OF DASH) (RIGHT SIDE OF ENGINE COMPT) (UPPER RIGHT SIDE OF DASH) (RIGHT SIDE OF ENGINE COMPT) (LEFT "C" PILLAR) (RIGHT FRONT CORNER OF ENGINE COMPT) (NOT USED) (IF EQUIPPED) IF QB AF ENGINE CONTROLS, STARTING/CHARGING, AIR CONDITIONING, ANTI-LOCK BRAKES, CRUISE CONTROL, INSTRUMENT CLUSTER, WIPER/WASHER, HEADLIGHTS, EXTERIOR LIGHTS, SHIFT INTERLOCK, WARNING, SUPPLEMENTAL RESTRAINTS, INTERIOR LIGHTS, ELECTRONIC POWER STEERING & TRANSMISSIONS SYSTEMS FROM ENGINE ROOM R/B 1 (DIAGRAM 1 OF 5) SUPPLEMENTAL RESTRAINTS SYSTEM SHIFT INTERLOCK SYSTEM ENGINE CONTROLS, ANTI-LOCK BRAKES, CRUISE CONTROL & EXTERIOR LIGHTS SYSTEMS ENGINE CONTROLS SYSTEM ANTI-LOCK BRAKES SYSTEM ENGINE CONTROLS SYSTEM NAVIGATION SYSTEM COMPUTER DATA LINES SYSTEM TO HTR FUSE (DIAGRAM 2 OF 5) AIR CONDITIONING SYSTEM POWER WINDOWS SYSTEM COOLING FANS SYSTEM DEFOGGER SYSTEM MEMORY SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM SEATS & AIR CONDITIONING SYSTEMS SEATS SYSTEM DEFOGGER SYSTEM SEATS SYSTEM WIPER/WASHER SYSTEM FROM ENGINE ROOM J/B 1 (DIAGRAM 1 OF 5) FROM A/C W/ PMP FUSE (DIAGRAM 2 OF 5) TO IG1 FUSE (DIAGRAM 3 OF 5) FROM J/C 6 (I72) (DIAGRAM 4 OF 5) AIR CONDITIONING SYSTEM
Q 30A 15A 7.5A M L 30A G 5A E B 15A E B 15A 30A 30A 20A E F 30A 30A 20A 10A 20A 20A 20A 7.5A 7.5A INSTRUMENT PANEL J/B ASSEMBLY D/L BACK RELAY ENGINE ROOM R/B 2 J/C 1 (A45) 7 8 3 1 5 2 F1 2 1 C4 D9 2 IQ3 9 1 D14 C12 D2 A3 D3 C7 A6 B35 B34 A10 C47 C9 C48 A8 RED BLU BLU VIO WHT/BLK WHT/BLK PNK RED RED WHT/BLK RED BLK WHT/BLK RED RED WHT/BLK WHT/BLK GRN GRN RED GRN WHT PNK BLU RED WHT WHT WHT BLU YEL GRN P/OUTLET 1 FUSE D/L 2 FUSE DOOR F/R FUSE P/SEAT F/L FUSE DOOR R/L FUSE DOOR F/L FUSE P/SEAT R/R FUSE P/SEAT R/L FUSE S/ROOF FUSE TI & TE FUSE OBD FUSE PBD FUSE STOP FUSE ACC FUSE P/OUTLET 2 FUSE P/OUTLET RELAY REAR POWER OUTLET SOCKET ASSEMBLY 1 POWER OUTLET SOCKET ASSEMBLY 1 IG1 RELAY AVS FUSE IG1 FUSE S/HTR F/R FUSE ECU-IG 6 FUSE (LEFT END OF DASH) (LEFT END OF DASH) (LEFT REAR OF LUGGAGE COMPT) (LEFT END OF DASH) (RIGHT SIDE OF ENGINE COMPT) (RIGHT SIDE OF ENGINE COMPT) (RIGHT FRONT CORNER OF ENGINE COMPT) (NOT USED) (NOT USED) IB IB QC AF FROM ENGINE ROOM J/B 1 (DIAGRAM 1 OF 5) TO ACC RELAY (DIAGRAM 4 OF 5) FROM ACC RELAY (DIAGRAM 4 OF 5) TO MAIN BODY ECU (DIAGRAM 4 OF 5) EXTERIOR LIGHTS & ANTI-LOCK BRAKES SYSTEMS ELECTRONIC POWER STEERING & MEMORY SYSTEMS SEATS SYSTEM MEMORY & SEATS SYSTEMS POWER WINDOWS SYSTEM SEATS SYSTEM POWER TOPS SYSTEM COMPUTER DATA LINES SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM ENGINE CONTROLS, SHIFT INTERLOCK, ANTI-LOCK BRAKES, CRUISE CONTROL & EXTERIOR LIGHTS SYSTEMS FROM CAPACITOR FUSE (DIAGRAM 2 OF 5) FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 5) ANTI-LOCK BRAKES SYSTEM SEATS SYSTEM ANTI-LOCK BRAKES & ELECTRONIC POWER STEERING SYSTEMS
M 10A T P V BECU S R IG Q ACC TRLY J 15A 10A F B 15A 25A 5A 5A C D 7.5A G 10A 5A 7.5A 7.5A INSTRUMENT PANEL J/B ASSEMBLY MAIN BODY ECU BKUP LP RELAY J/C 30 (Q29) J/C 1 (A45) J/C 6 (I72) B1 B2 A35 B9 C40 A39 C22 6 20 C21 B54 B32 D51 B44 D49 31 A27 D43 32 30 14 D56 D34 A5 C39 B25 B26 B24 A37 4 3 C25 1 9 2 5 7 A32 C43 12 17 13 14 19 B16 15 13 14 C31 16 19 20 22 17 18 21 C1 D1 A38 C28 B23 B36 C45 A40 B55 C44 B46 D9 VIO BLU BLU BLK VIO GRY BLU GRN WHT ORG WHT RED RED YEL RED BLU YEL BLK (OR WHT) GRN GRN GRN PNK GRY GRN BLU GRN LT GRN YEL BLK BLU VIO VIO RED PNK LT GRN LT BLU BLU BLK BLK BLU BLU YEL VIO GRN GRY PNK LT GRN BLU RED GRN BLU BLU WHT (OR GRY) RED PNK WHT WHT/BLK RED ACC RELAY IG1 2 RELAY IG1 3 RELAY IG1 1 RELAY TAIL RELAY EPS- IG FUSE S/HTR F/L FUSE ECU-IG 3 FUSE ECU-IG 4 FUSE ECU-IG 1 FUSE WIPER RR FUSE ECU-IG 5 FUSE BKUP LP FUSE WASHER FUSE WIPER FUSE TAIL FUSE PANEL FUSE (LEFT END OF DASH) (LEFT END OF DASH) (LEFT FRONT OF LUGGAGE COMPT) (RIGHT SIDE OF ENGINE COMPT) (LEFT END OF DASH) USED) (NOT (NOT USED) (NOT USED) IB TO J/C 23 (I135) (DIAGRAM 5 OF 5) FROM FUSE BLOCK ASSEMBLY (DIAGRAM 1 OF 5) TO ENGINE ROOM R/B 1 (DIAGRAM 1 OF 5) TO ENGINE ROOM R/B 2 (DIAGRAM 3 OF 5) FROM CERTIFICATION ECU (DIAGRAM 1 OF 5) FROM CERTIFICATION ECU (DIAGRAM 1 OF 5) FROM J/C 16 (I84) (DIAGRAM 5 OF 5) ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM SOUND SYSTEMS FROM OBD FUSE (DIAGRAM 3 OF 5) FROM ACC FUSE (DIAGRAM 3 OF 5) TO P/OUTLET 2 FUSE (DIAGRAM 3 OF 5) TO ECU-IG 2 FUSE (DIAGRAM 5 OF 5) COOLING FANS SYSTEM WARNING SYSTEMS SHIFT INTERLOCK SYSTEM SEATS SYSTEM INTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM ELECTRONIC POWER STEERING SYSTEM NAVIGATION SYSTEM HEADLIGHTS & EXTERIOR LIGHTS SYSTEMS TO J/C 23 (I135) (DIAGRAM 5 OF 5) WIPER/WASHER, INTERIOR LIGHTS & POWER TOPS SYSTEMS SHIFT INTERLOCK SYSTEM PASSIVE RESTRAINTS & NAVIGATION SYSTEMS AIR CONDITIONING & DEFOGGER SYSTEMS NAVIGATION SYSTEM TO R/B ASSEMBLY (DIAGRAM 2 OF 5) SEATS SYSTEM HEADLIGHTS SYSTEM AIR CONDITIONING SYSTEM SEATS SYSTEM DEFOGGER SYSTEM WIPER/ WASHER SYSTEM CRUISE CONTROL SYSTEM AIR CONDITIONING SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM PASSIVE RESTRAINTS SYSTEM MEMORY SYSTEM MEMORY SYSTEMS INSTRUMENT CLUSTER SYSTEM
1 1 10A X W 10A U N P V T R 10A 10A 5A 10A 5A 5A 10A J/C 23 (I135) J/C 25 (I137) INSTRUMENT PANEL J/B ASSEMBLY J/C 16 (I84) J/C 18 (I86) ENGINE ROOM R/B 2 J/C 8 (I74) J/C 3 (A48) J/C 30 (Q29) J/C 13 (I81) J/C 7 (I73) OPTION CONNECTOR (REMOTE ENGINE STARTER) 10 11 22 20 22 19 22 21 7 11 7 20 16 3 20 1 17 2 C41 C42 19 AI3 15 IQ2 6 21 18 19 20 18 15 17 13 19 16 21 16 14 18 12 17 13 15 12 17 19 18 15 AI15 2 13 14 22 20 8 10 9 9 8 14 15 12 3 6 1 10 4 5 11 15 12 13 14 19 4 22 17 18 21 20 10 6 11 9 1 5 GRY BLU BLU LT GRN WHT RED RED BLK RED RED RED RED RED RED RED GRY LT GRN WHT RED YEL GRN GRN GRN BLK GRN RED BLU PNK GRN GRY BLK BLU BLK BLK LT GRN WHT GRY PNK BLU VIO VIO BLU GRY ORG WHT BLU BLK LT BLU GRY BLU LT GRN RED LT BLU RED BLK YEL ORG BLK PNK YEL LT BLU PNK PNK VIO YEL LT GRN YEL BLU RED LT GRN RED BLK WHT BLK BLU ORG WHT VIO GRY WHT GRN LT GRN BLK PNK WHT GRN BLK BLK (OR GRN) RED RED WHT RED BLK (OR BLK) (OR BLK) (OR BLK) ECU-IG 2 FUSE ECU-B 2 FUSE DOME FUSE ODS FUSE ECU-B 1 FUSE IMMOBI FUSE HORN FUSE DCM FUSE ECU-B 5 FUSE (CENTER OF DASH) (RIGHT END OF DASH) (LEFT END OF DASH) (RIGHT SIDE OF DASH) (RIGHT CENTER OF DASH) (RIGHT SIDE OF ENGINE COMPT) (UPPER LEFT END OF DASH) (UPPER RIGHT END OF DASH) (LEFT FRONT OF LUGGAGE COMPT) (LEFT END OF DASH) (RIGHT END OF DASH) LATE PRODUCTION FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 5) FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 5) NAVIGATION SYSTEM INSTRUMENT CLUSTER SYSTEM TRANSMISSIONS SYSTEM WARNING SYSTEMS NAVIGATION SYSTEM AIR CONDITIONING & SEATS SYSTEMS INSTRUMENT CLUSTER SYSTEM MIRRORS SYSTEM NAVIGATION & SOUND SYSTEMS SOUND SYSTEMS NAVIGATION & SOUND SYSTEMS NAVIGATION SYSTEM TO MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (DIAGRAM 1 OF 5) ENGINE CONTROLS SYSTEM FROM IG1 2 RELAY (DIAGRAM 4 OF 5) NAVIGATION & SOUND SYSTEMS NAVIGATION SYSTEM MEMORY SYSTEM SOUND SYSTEMS ELECTRONIC POWER STEERING & MEMORY SYSTEMS SEATS SYSTEM TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 5) CRUISE CONTROL SYSTEM AIR CONDITIONING & SEATS SYSTEMS CRUISE CONTROL SYSTEM NAVIGATION SYSTEM SEATS SYSTEM NAVIGATION SYSTEM CRUISE CONTROL SYSTEM COMPUTER DATA LINES SYSTEM NAVIGATION SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM ANTI-THEFT SYSTEM HORNS SYSTEM INTERIOR LIGHTS SYSTEM NAVIGATION SYSTEM COMPUTER DATA LINES SYSTEM FROM ENGINE ROOM R/B 1 (DIAGRAM 1 OF 5) NAVIGATION, SOUND & ANTI-THEFT SYSTEMS FROM ENGINE ROOM R/B 1 (DIAGRAM 1 OF 5) WARNING SYSTEMS SHIFT INTERLOCK SYSTEM AIR CONDITIONING SYSTEM DOOR LOCKS & ANTI-THEFT SYSTEMS POWER WINDOWS, DOOR LOCKS & ANTI-THEFT SYSTEMS AIR CONDITIONING & SEATS SYSTEMS TRUNK, TAILGATE, FUEL DOORS SYSTEM ELECTRONIC POWER STEERING & MEMORY SYSTEMS MEMORY SYSTEM DOOR LOCKS & ANTI-THEFT SYSTEMS SHIFT INTERLOCK SYSTEM MEMORY SYSTEM INSTRUMENT CLUSTER SYSTEM SEATS SYSTEM MEMORY SYSTEM TO MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (DIAGRAM 1 OF 5) MIRRORS SYSTEM