Lexus·Nx300·2019 Lexus NX300·Wiring
Wiring diagram

2019 Lexus NX300 — power distribution

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Power distribution

1 2 1 2 2 1 3 3 4 3 4 3 4 3 4 4 3 4 4 W 25A 10A 15A U TAIL E ASEL PGND ACC B+ DIS T E S (12 GA-WHT) A B C ACCD IG1D +B AGND SSW1 SSW2 SS1 AGND SS2 7.5A 20A 5A 10A 5A 5A 10A 20A 5A 10A 10A 5A 20A R H 30A 50A 140A 30A 20A 10A 15A 30A 10A 50A 10A 30A 30A 30A 20A 80A 20A 30A 10A 15A ENGINE ROOM J/B 1 ENGINE ROOM R/B 1 J/C 30 (Q29) J/C 13 (I81) J/C 7 (I73) SHORT CONNECTOR I63 & R1 ENGINE ROOM R/B 2 J/C 14 (I82) CERTIFICATION ECU ENGINE SWITCH 20 KI1 1 10 2 5 21 15 21 I52 10 1 5 6 7 11 I63 I63 r1 4 4 3 3 3 8 6 IQ2 18 12 15 13 14 15 6 11 10 9 1 5 22 19 17 18 21 20 AI3 23 AI13 I53 10 3 I51 9 12 16 I53 18 1 5 6 B1 A1 C1 (OR BLK) (OR BLK) RED BLK BLK BLK BLK RED BLK RED (OR BLK) RED YEL (OR BLU) (OR BLU) (OR GRN) (OR BLK) BLK RED WHT/BLK WHT/BLK VIO LT GRN BLK LT GRN VIO GRY GRY BRN BLK BLU WHT WHT/BLK BLU (OR WHT) RED RED WHT WHT WHT BLU WHT PNK BLK/BLU BLU BLK (OR WHT) RED BLU RED RED BLU BLU RED LT GRN BLK WHT BLK PNK LT GRN GRN WHT WHT BLK GRN ORG WHT GRY BLU RED WHT WHT WHT BLU PNK LT GRN GRN LT GRN GRN PNK WHT RED RED RED BLK BLK WHT RED RED RED RED BLK BLK RED RED RED RED BLK BLK WHT BLK BLU RED WHT BLU WHT RED BLU BLK BLK BLU BLK RED BLK BLK WHT RED BLU WHT RED BLK BLK/DK GRN H-LP MAIN RH/H-LP MAIN LO FUSE TURN & HAZ FUSE D/L 1 FUSE STRG LOCK FUSE EPS FUSE BBC 2 FUSE ALT FUSE ST 1 FUSE ECU-B 5 FUSE RADIO FUSE EDU FUSE EPB 2 FUSE EPB 1 FUSE ABS MTR FUSE ABS MAIN FUSE AMP FUSE MAIN FUSIBLE LINK H-LP MAIN LH/H-LP MAIN HI FUSE R/B RH-B FUSE IG2 MAIN FUSE ECU- B 1 FUSE AM2 FUSE ETCS FUSE D/C CUT FUSE EFI- MAIN 3 FUSE EFI- MAIN 1 FUSE EFI- MAIN 2 FUSE METER 1 FUSE ECU-B 4 FUSE DOME FUSE BATTERY ECU- B 2 FUSE IMMOBI FUSE ODS FUSE HORN FUSE ECU-B 5 FUSE DCM FUSE MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (LEFT SIDE OF ENGINE COMPT) (LEFT SIDE OF ENGINE COMPT) (LEFT FRONT OF ENGINE COMPT) (LEFT SIDE OF TRANSAXLE) (LEFT FRONT OF LUGGAGE COMPT) (RIGHT END OF DASH) (LEFT END OF DASH) (UNDER CENTER CONSOLE) (RIGHT SIDE OF ENGINE COMPT) (RIGHT END OF DASH) (LOWER RIGHT SIDE OF DASH) (LOWER RIGHT CENTER OF DASH) (UPPER RIGHT SIDE OF DASH) W/O SAFETY CONNECT W/ SAFETY CONNECT EARLY PRODUCTION LATE PRODUCTION DA DB IE IF DOOR LOCKS, ANTI-THEFT & TRUNK, TAILGATE, FUEL DOORS SYSTEMS TO J/C 21 (I133) (DIAGRAM 3 OF 4) TO ENGINE ROOM J/B 2 (DIAGRAM 2 OF 4) NAVIGATION & SOUND SYSTEMS STARTING/ CHARGING SYSTEM ENGINE CONTROLS SYSTEM SHIFT INTERLOCK SYSTEM ANTI-LOCK BRAKES SYSTEM SHIFT INTERLOCK SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 3 OF 4) ELECTRONIC POWER STEERING SYSTEM NAVIGATION & SOUND SYSTEMS STARTING/ CHARGING SYSTEM STARTING/ CHARGING SYSTEM HEADLIGHTS SYSTEM INSTRUMENT CLUSTER SYSTEM ENGINE CONTROLS SYSTEM INTERIOR LIGHTS SYSTEM TO ENGINE ROOM R/B 1 (DIAGRAM 2 OF 4) ANTI-LOCK BRAKES & ELECTRONIC POWER STEERING SYSTEMS ELECTRONIC POWER STEERING & MEMORY SYSTEMS MEMORY SYSTEMS DOOR LOCKS SYSTEM SHIFT INTERLOCK SYSTEM MEMORY SYSTEMS MEMORY SYSTEMS INSTRUMENT CLUSTER SYSTEM MIRRORS SYSTEM INSTRUMENT CLUSTER SYSTEM SEATS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) FROM J/C 25 (I137) (DIAGRAM 3 OF 4) ANTI- THEFT SYSTEM NAVIGATION SYSTEM TO J/C 21 (I133) (DIAGRAM 3 OF 4) INTERIOR LIGHTS SYSTEM TO J/C 4 (A48) (DIAGRAM 2 OF 4) HORNS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM
25A EXCD S N L 10A 50A 30A 50A 30A K 50A Q ELS2 10A 7.5A 5A 5A 10A 5A K A 50A 15A 20A 30A 5A 15A 30A 15A 7.5A ACC2 ACC1 D 20A 50A H J AC1 GND IG AC2 INSTRUMENT PANEL J/B ASSEMBLY ENGINE ROOM R/B 1 ENGINE ROOM J/B 2 ENGINE ROOM R/B 2 ENGINE ROOM R/B 2 R/B ASSEMBLY J/C 8 (I74) J/C 4 (A48) J/C 16 (I84) ECM 7 19 22 21 20 16 12 19 22 17 13 18 15 14 19 2 AI15 20 17 1 2 1 2 15 3 14 12 5 11 4 8 10 9 6 2 AQ4 A35 18 3 B5 C2 C13 B13 B20 B33 B40 D8 D35 C36 26 AI13 3 5 4 1 2 5 1 A1 2 IQ3 10 4 1 2 3 8 6 7 5 1 BLU RED RED BLK LT GRN WHT BLU WHT/BLK WHT RED BLK RED BLK LT BLU GRY BLU LT GRN LT BLU RED WHT/BLK GRN WHT BLK WHT WHT WHT/BLK BLU RED GRN RED YEL VIO BLK LT GRN YEL PNK PNK BLU LT BLU YEL PNK BLK BLK BLK BLK BLK YEL BLK LT BLU BLK BLK YEL BLK RED RED PNK BLK RED BLK YEL BLU RED YEL RED BLK BLK BLK WHT BLK WHT/BLK RED BLK WHT/BLK GRY YEL BLK RED BLK BLK BLK WHT/BLK WHT WHT/BLK RED RED IG2 MAIN RELAY IGN FUSE A/BAG FUSE IG2 2 FUSE METER 2 FUSE IG2 3 FUSE IG2 1 FUSE H-LP CLN FUSE INV FUSE DRL FUSE DEICER FUSE STRG HTR FUSE FAN 1 FUSE FOG FR FUSE P/SEAT F/R FUSE FAN 2 FUSE MIRROR FUSE DEF FUSE DOOR R/R FUSE CAPACITOR FUSE HTR FUSE RR S-HTR FUSE PTC HTR 2 FUSE PTC HTR 3 FUSE PTC HTR 1 FUSE INV RELAY WIRING HARNESS CONDENSER ASSEMBLY 1 VOLTAGE INVERTER ASSEMBLY POWER OUTLET SOCKET ASSEMBLY 2 (LEFT SIDE OF ENGINE COMPT) (LEFT END OF DASH) (LEFT FRONT CORNER OF ENGINE COMPT) (RIGHT SIDE OF ENGINE COMPT) (RIGHT SIDE OF ENGINE COMPT) (RIGHT SIDE OF ENGINE COMPT) (UPPER CENTER OF DASH) (RIGHT SIDE OF ENGINE COMPT) (UPPER LEFT END OF DASH) (UPPER RIGHT END OF DASH) (RIGHT FRONT CORNER OF ENGINE COMPT) (UPPER RIGHT SIDE OF DASH) (LEFT "C" PILLAR) (RIGHT SIDE OF DASH) (LEFT REAR OF LUGGAGE COMPT) (LEFT SIDE OF ENGINE COMPT) (NOT USED) (NOT USED) (IF EQUIPPED) AC AF IF QB SUPPLEMENTAL RESTRAINTS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS, CRUISE CONTROL & TRANSMISSIONS SYSTEMS FROM ENGINE ROOM R/B 1 (DIAGRAM 1 OF 4) NAVIGATION & COMPUTER DATA LINES SYSTEMS FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) ENGINE CONTROLS, STARTING/CHARGING, AIR CONDITIONING, ANTI-LOCK BRAKES, CRUISE CONTROL, INSTRUMENT CLUSTER, EXTERIOR LIGHTS, WARNING, INTERIOR LIGHTS, WIPER/WASHER, HEADLIGHTS, SUPPLEMENTAL RESTRAINTS, ELECTRONIC POWER STEERING & TRANSMISSIONS SYSTEMS SHIFT INTERLOCK SYSTEM ENGINE CONTROLS, CRUISE CONTROL & EXTERIOR LIGHTS SYSTEMS TO RR S-HTR FUSE (DIAGRAM 2 OF 4) DEFOGGER SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM DEFOGGER SYSTEM SEATS SYSTEM POWER WINDOWS SYSTEM COOLING FANS SYSTEM MEMORY SYSTEMS COOLING FANS SYSTEM WIPER/WASHER SYSTEM SEATS SYSTEM FROM ENGINE ROOM J/B 1 (DIAGRAM 1 OF 4) FROM FAN 2 FUSE (DIAGRAM 2 OF 4) TO IG1 FUSE (DIAGRAM 3 OF 4) SEATS SYSTEM AIR CONDITIONING SYSTEM FROM ENGINE ROOM R/B 2 (DIAGRAM 1 OF 4) WARNING SYSTEMS SHIFT INTERLOCK SYSTEM NAVIGATION SYSTEM FROM J/C 6 (I72) (DIAGRAM 4 OF 4) DOOR LOCKS & ANTI-THEFT SYSTEMS FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) COMPUTER DATA LINES SYSTEM SOUND SYSTEMS AIR CONDITIONING SYSTEM DOOR LOCKS & ANTI-THEFT SYSTEMS MEMORY SYSTEMS NAVIGATION SYSTEM SOUND & NAVIGATION SYSTEMS SOUND SYSTEMS SEATS SYSTEM ELECTRONIC POWER STEERING & MEMORY SYSTEMS TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4) AIR CONDITIONING SYSTEM CRUISE CONTROL SYSTEM SEATS SYSTEM NAVIGATION SYSTEM
1 2 2 1 1 2 W U R V P 10A 15A 7.5A L M 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 J/C 23 (I135) J/C 25 (I137) J/C 21 (I133) J/C 18 (I86) ENGINE ROOM R/B 2 J/C 1 (A45) 22 14 AI13 16 AI13 1 22 21 18 17 19 17 AI8 10 2 3 1 15 13 16 12 18 12 19 15 13 14 17 5 3 2 1 8 7 F1 2 1 C4 D9 2 IQ3 9 1 D14 C12 D2 A3 D3 C7 A6 B35 B34 A10 C47 C9 C48 A8 RED RED (OR BLK) BLU RED RED BLU PNK ORG BLK PNK WHT ORG VIO LT BLU BLK LT GRN LT BLU WHT/BLK ORG WHT GRY BLU VIO VIO BLU WHT BLK LT GRN GRY WHT/BLK GRY RED BLU RED VIO WHT/BLK RED RED RED WHT/BLK WHT/BLK 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 ACC FUSE DOOR F/R FUSE DOOR R/L FUSE P/SEAT R/R FUSE P/SEAT F/L FUSE DOOR F/L FUSE P/SEAT R/L FUSE S/ROOF FUSE STOP FUSE TI & TE FUSE OBD FUSE PBD FUSE P/OUTLET RELAY P/OUTLET 2 FUSE POWER OUTLET SOCKET ASSEMBLY 1 REAR POWER OUTLET SOCKET ASSEMBLY 1 IG1 RELAY S/ HTR F/R FUSE IG1 FUSE AVS FUSE ECU-IG 6 FUSE (LEFT END OF DASH) (LEFT END OF DASH) (LEFT END OF DASH) (LEFT REAR OF LUGGAGE COMPT) (CENTER OF DASH) (UPPER LEFT END OF DASH) (RIGHT END OF DASH) (RIGHT CENTER OF DASH) (RIGHT SIDE OF ENGINE COMPT) (RIGHT FRONT CORNER OF ENGINE COMPT) (RIGHT REAR OF ENGINE COMPT) (NOT USED) EARLY PRODUCTION LATE PRODUCTION IB QC IB AF FROM ENGINE ROOM J/B 1 (DIAGRAM 1 OF 4) TO ACC RELAY (DIAGRAM 4 OF 4) FROM ACC RELAY (DIAGRAM 4 OF 4) TO MAIN BODY ECU (DIAGRAM 4 OF 4) EXTERIOR LIGHTS & ANTI-LOCK BRAKES SYSTEMS COMPUTER DATA LINES SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM POWER TOPS SYSTEM POWER WINDOWS SYSTEM MEMORY & ELECTRONIC POWER STEERING SYSTEMS SEATS SYSTEM SEATS SYSTEMS TRANSMISSIONS, ENGINE CONTROLS, ANTI-LOCK BRAKES, SHIFT INTERLOCK, CRUISE CONTROL & EXTERIOR LIGHTS SYSTEMS FROM INSTRUMENT PANEL J/B (DIAGRAM 4 OF 4) AIR CONDITIONING SYSTEM TRANSMISSIONS & SOUND SYSTEMS SOUND SYSTEMS INSTRUMENT CLUSTER & COMPUTER DATA LINES SYSTEMS SOUND & NAVIGATION SYSTEMS SOUND & NAVIGATION SYSTEMS SOUND & NAVIGATION SYSTEMS NAVIGATION SYSTEM MIRRORS SYSTEM ANTI- THEFT SYSTEM INSTRUMENT CLUSTER & NAVIGATION SYSTEMS TO MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (DIAGRAM 1 OF 4) FROM CAPACITOR FUSE (DIAGRAM 2 OF 4) FROM ENGINE ROOM R/B 2 (DIAGRAM 1 OF 4) FROM ENGINE ROOM R/B 1 (DIAGRAM 1 OF 4) TRANSMISSIONS SYSTEM ANTI-LOCK BRAKES SYSTEM SEATS SYSTEM ANTI-LOCK BRAKES & ELECTRONIC POWER STEERING SYSTEMS ELECTRONIC SUSPENSION SYSTEM FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 4)
T M V Q BECU IG ACC TRLY P N J 15A 10A F B 15A 25A 5A 5A C D 7.5A G 10A 10A 5A 7.5A 7.5A 10A INSTRUMENT PANEL J/B ASSEMBLY MAIN BODY ECU BACKUP LP RELAY J/C 30 (Q29) J/C 6 (I72) J/C 18 (I86) J/C 1 (A45) J/C 23 (I135) 7 22 A35 B9 C40 A39 C22 B23 B16 6 13 16 B32 B54 11 31 30 32 14 B44 D49 A27 D51 D43 C42 C41 8 9 10 B2 B1 B50 D56 D34 A5 C39 B25 B26 B24 A37 20 21 18 19 4 3 C25 1 9 2 5 7 A32 C43 12 17 20 14 19 15 13 14 C31 16 19 20 17 18 21 C1 D1 A38 C28 C21 B36 C45 A40 B55 C44 B46 D9 GRY WHT (OR GRN) (OR WHT) VIO (OR WHT) (OR WHT) VIO RED LT GRN BLU BLU BLU RED WHT ORG WHT YEL BLK GRN BLK YEL ORG RED RED BLU YEL BLK BLK GRN GRN GRN PNK BLK GRN GRY PNK GRY GRN BLU GRN LT GRN YEL BLK BLU VIO GRY PNK LT GRN LT BLU BLK BLK BLU BLU VIO GRN GRY PNK LT GRN BLU RED GRN BLU BLU WHT VIO RED GRY WHT WHT/BLK GRY ACC RELAY TAIL RELAY IG1 2 RELAY IG1 3 RELAY IG1 1 RELAY BKUP LP FUSE WIPER RR FUSE ECU-IG 2 FUSE ECU-IG 4 FUSE ECU-IG 3 FUSE PANEL FUSE TAIL FUSE ECU-IG 5 FUSE WIPER FUSE WASHER FUSE ECU-IG 1 FUSE S/HTR F/L FUSE EPS IG FUSE (LEFT END OF DASH) (LEFT END OF DASH) (LEFT FRONT OF LUGGAGE COMPT) (LEFT END OF DASH) (RIGHT CENTER OF DASH) (RIGHT REAR OF ENGINE COMPT) (CENTER OF DASH) (NOT USED) (NOT USED) USED) (NOT (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) IB TO ENGINE ROOM R/B 1 (DIAGRAM 2 OF 4) TO ENGINE ROOM R/B 2 (DIAGRAM 3 OF 4) FROM CERTIFICATION ECU (DIAGRAM 1 OF 4) TO J/C 23 (I135) (DIAGRAM 3 OF 4) FROM CERTIFICATION ECU (DIAGRAM 1 OF 4) FROM J/C 16 (I84) (DIAGRAM 2 OF 4) FROM SHORT CONNECTOR I63 & R1 (DIAGRAM 1 OF 4) TRANSMISSIONS SYSTEM FROM OBD FUSE (DIAGRAM 3 OF 4) TO P/OUTLET 2 FUSE (DIAGRAM 3 OF 4) FROM ACC FUSE (DIAGRAM 3 OF 4) EXTERIOR LIGHTS & TRANSMISSIONS SYSTEMS EXTERIOR LIGHTS SYSTEM ELECTRONIC POWER STEERING SYSTEM WIPER/WASHER SYSTEM SHIFT INTERLOCK SYSTEM WARNING SYSTEMS TO J/C 16 (I84) (DIAGRAM 2 OF 4) INTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS & HEADLIGHTS SYSTEMS SEATS SYSTEM WIPER/WASHER, MIRRORS & POWER TOPS SYSTEMS TO R/B ASSEMBLY (DIAGRAM 2 OF 4) PASSIVE RESTRAINTS SYSTEM SEATS SYSTEM SHIFT INTERLOCK SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM NAVIGATION SYSTEM AIR CONDITIONING SYSTEM NAVIGATION SYSTEM WIPER/ WASHER SYSTEM COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM INSTRUMENT CLUSTER SYSTEM PASSIVE RESTRAINTS & NAVIGATION SYSTEMS WARNING SYSTEMS TRANSMISSIONS SYSTEM AIR CONDITIONING SYSTEM SEATS SYSTEM AIR CONDITIONING & DEFOGGER SYSTEMS NAVIGATION SYSTEM HEADLIGHTS SYSTEM NAVIGATION SYSTEM MEMORY SYSTEMS MEMORY SYSTEMS CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM