Lexus RX I (1997-2003) j/b 3 (behind upper center of dash) Wiring diagrams

A/T INDICATOR SWITCH (PART OF PARK/NEUTRAL POSITION SWITCH, ON TRANSAXLE) ABS, BA, TRAC, VSC ECU (BEHIND RIGHT SIDE OF DASH) BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SWITCH BRL BRN/WHT WIRE COMBINATION METER CRUISE CONTROL SYSTEM D/G CSW GYAW YAW DATA LINK CONNECTOR 3 (UNDER LEFT SIDE OF DASH) DECELERATION ENG ENG+ PKB TRC- ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) GAUGE FUSE GGND GGND RR+ RR- GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE GYAW HEATER FUSE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 7 (BEHIND UPPER LEFT SIDE OF DASH) J/C 8 (BEHIND RIGHT SIDE OF DASH) J/C 9 (BEHIND RIGHT KICK PANEL) LBL LEFT REAR ABS SPEED SENSOR LT GRN WIRE LT GRN/BLK WIRE NEO PNK WIRE PNK WT WIRE PNK/BLK WIRE PRO VSCW WA IND STP RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT REAR ABS SPEED SENSOR PARKING BRAKE SWITCH (ON BRAKE LEVER) SHIELD GSS RL+ RL- SHIELD YSS YD BZ CCS SLIP IND VSC IND ABS IND BRAKE IND STOP FUSE STOPLIGHT SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) TC TS TRAC OFF IND TRACTION CUT SWITCH TRC+ VGS VIO WIRE VYS WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YAW RATE SENSOR (LEFT REAR OF VEHICLE)

1 2 5 6 9 11 17 RDR+ BECU SH RDR- 13 12 5 12 MPX+ MPX- 18 19 BDSU BDSL 2 5 6 10 11 13 14 16 17 18 19 23 24 25 A- SIG KL 21 17 MPX+ MPX- 5 6 8 BCTY HCTY KSW A+ BDR LSW CTY CPUB KUL CTYE LSWE GND BLK WIRE BLK/ORG WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BSUB IG IND COMBINATION METER ECU D RR DOOR FUSE DOOR LOCKS SYSTEM DRIVER DOOR ECU (IN LEFT FRONT DOOR) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) GAUGE FUSE GRN/BLK WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN ON OR START IMLD INSTRUMENT CONTROL PANEL INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/C 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 9 (BEHIND RIGHT KICK PANEL) LEFT FRONT DOOR COURTESY SWITCH LSWA LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE P FR DOOR FUSE P RR DOOR FUSE PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RIGHT FRONT DOOR COURTESY SWITCH THEFT DETERRENT INDICATOR LIGHT VIO WIRE WHT WIRE WHT/BLK (OR YEL/RED) WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

1 2 3 7 9 11 12 13 1 2 9 3 7 10 12 5 B+ 4 5 11 4 TX- TX+ A/C AMBIENT TEMPERATURE SENSOR (BEHIND LEFT FRONT GRILLE) A/C EVAPORATOR TEMPERATURE SENSOR (BEHIND RIGHT SIDE OF DASH) A/C ROOM TEMPERATURE SENSOR (BEHIND LEFT CENTER OF DASH) A/C SOLAR SENSOR (BEHIND UPPER LEFT SIDE OF DASH) AIR INLET CONTROL SERVO MOTOR (BEHIND RIGHT SIDE OF DASH) AIR MIX CONTROL SERVO MOTOR (BEHIND RIGHT SIDE OF DASH) AIR VENT MODE CONTROL SERVO MOTOR (BEHIND RIGHT SIDE OF DASH) BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLW BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CDS FUSE CELLULAR PHONES SYSTEM INSTRUMENT CLUSTER SYSTEM COMB MTR INPUT COMB MTR INPUT COMB MTR INPUT SG-5 MPX- COMB MTR INPUT SRS IND HIGH BEAM IND MPX+ COMBINATION METER ECU (BEHIND COMBINATION METER) COMPUTER DATA LINES SYSTEM FUSIBLE LINK BLOCK (IN ENGINE ROOM J/B, LEFT SIDE OF ENGINE COMPT) GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/RED WIRE HEATER FUSE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IG+ TX+ GND TX- MPX- MPX+ INSTRUMENT CLUSTER SYSTEM INSTRUMENT CONTROL PANEL INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) LT GRN/BLK WIRE LT GRN/RED WIRE MULTI-DISPLAY O/D OFF IND TAM POWER HIGH BEAM COMB MTR INPUT GND COMB MTR INPUT ORG/ WIRE PNK WIRE PNK/BLU WIRE RADIO 2 FUSE RDI FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE SG-2 COMB MTR INPUT TR SG-3 COMB MTR INPUT TPI AIR AIF COMB MTR INPUT TS TPO AOD AOF TP AMH AMC SG-1 VIO WIRE VIO/WHT WIRE W/ NAV W/O NAV WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

AIR CONDITIONING SYSTEM HEADLIGHTS SYSTEM ANTI-THEFT SYSTEM DOOR LOCKS SYSTEM WIPER/WASHER SYSTEM ANTI-THEFT, ENGINE CONTROLS SYSTEMS BCTY HCTY DBKL KSW HR ILE BLK WIRE BLK/ORG WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN/WHT WIRE BRN/YEL WIRE BSUB IG FFGO TRLY PWR CLTE BZR CLTS COMPUTER DATA LINES SYSTEM DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM (W/KEYLESS ENTRY) DOOR LOCKS, HEADLIGHTS, INTERIOR LIGHTS, POWER WINDOWS SYSTEMS DRL HEAD TAIL LSWA EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM GAUGE FUSE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HAZ CLTB HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM TRANSMISSIONS SYSTEM HEADLIGHTS SYSTEM HORN HORNS SYSTEM HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/C 5 (BEHIND UPPER LEFT SIDE OF DASH) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE P FR DOOR FUSE PNK WIRE PNK/BLK WIRE POWER TOPS SYSTEM RADIO 2 FUSE RCO RDA RSSI BDSU BDSL RDR+ RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RR WIP FUSE RWLM RWIG SH RDR- RWSW WIG RWLS RWW SNOW IND DFG STPI PKB HF TRANSMISSIONS SYSTEM ANTI-THEFT SYSTEM DEFOGGER SYSTEM W/AUTO LAMPS WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE

13 1 4 TC C/C CG ABS, BA, TRAC, VSC ECU (BEHIND RIGHT SIDE OF DASH) BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMBINATION METER ECU (BEHIND COMBINATION METER) COMBINATION SWITCH CRUISE CRUISE CONTROL ACTUATOR (LEFT REAR OF ENGINE) CRUISE CONTROL ECU (LEFT SIDE OF DASH) CRUISE CONTROL IND CRUISE CONTROL SWITCH DATA LINK CONNECTOR 3 (UNDER LEFT SIDE OF DASH) ECU-IG FUSE ENGINE CONTROL MODULE GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE HEATER FUSE HOT AT ALL TIMES HOT IN ON, START IDLO INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/B 5 (UPPER LEFT SIDE OF DASH) J/C 5 (BEHIND UPPER LEFT SIDE OF DASH) JUNCTION CONNECTOR J/C 4 (LEFT KICK PANEL) JUNCTION CONNECTOR J/C 8 (RIGHT SIDE OF DASH) P/N PARK/NEUTRAL POSITION SWITCH (ON TOP OF TRANSAXLE) PI ECT MC PNK/BLK WIRE RED WIRE RED/WHT WIRE RED/YEL WIRE RESUME/ ACCEL SET/ COAST STOP FUSE STOPLIGHT SWITCH TC CCS SPD IDL OD MO GND VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/GRN WIRE

BLK WIRE BODY ECU BRN WIRE CD AUTOMATIC CHANGER RADIO, PLAYER CIGARETTE LIGHTER COMBINATION METER ECU DAYTIME RUNNING LIGHT RESISTOR (OR SHORT CONNECTOR) DRIVER'S SEAT HEATER SWITCH DRL 3 RELAY DRL 4 RELAY ELECTRONIC CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE HOOD COURTESY SWITCH FROM J/B 3 (DIAGRAM 2 OF 5) FROM J/C 1 (DIAGRAM 1 OF 5) FRONT PASSENGER'S SEAT HEATER SWITCH FUEL SENDER (SUB) GLOVE BOX LIGHT GND 1 8 6 GND 2 GND 9 7 GND GND 2 20 INSTRUMENT CONTROL PANEL J/B 3 (BEHIND UPPER CENTER OF DASH) J/C 1 (IN ENGINE COMPARTMENT, ON RIGHT FRONT FENDER) MULTI-DISPLAY O/D MAIN SWITCH R/B 3 (ON FRONT CENTER OF ENGINE COMPARTMENT, ON RADIATOR SUPPORT) REMOTE CONTROL MIRROR SWITCH RIGHT FRONT SIDE MARKER LIGHT RIGHT PARKING LIGHT SEAT MEMORY SWITCH SHIFT LOCK ECU THEFT DETERRENT INDICATOR LIGHT TO J/B 3 (DIAGRAM 2 OF 5) TO J/B 5 TRACTION CUT SWITCH HAZARD SWITCH W/O NAVIGATION W/ NAVIGATION WASHER LEVEL WARNING SWITCH WHT WIRE

BLK WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CANADIAN MODELS COMBINATION METER ECU DAYTIME RUNNING LIGHT RESISTOR (ON LEFT FRONT OF ENGINE COMPARTMENT) DRL 2 RELAY DRL 3 RELAY DRL 4 RELAY DRL FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) FOG LIGHT RELAY FR FOG FUSE TAIL FUSE GAUGE FUSE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE H-LP L UPR FUSE H-LP R UPR FUSE HEAD (USA) INDICATOR HIGH BEAM INDICATOR HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 1 (IN ENGINE COMPARTMENT, ON RIGHT FRONT FENDER) J/C 2 (IN LEFT FRONT OF ENGINE COMPARTMENT, BEHIND HEADLIGHT) J/C 4 (LEFT KICK PANEL) LEFT FRONT FOG LIGHT LEFT HEADLIGHT ECU (BEHIND LEFT HEADLIGHT) (W/ HID) LEFT HIGH BEAM HEADLIGHT (W/O HID) LT GRN WIRE LT GRN/RED WIRE PARKING BRAKE SWITCH R/B 2 R/B 3 (ON FRONT CENTER OF ENGINE COMPARTMENT, ON RADIATOR SUPPORT) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT FOG LIGHT RIGHT HEADLIGHT ECU (BEHIND RIGHT HEADLIGHT) (W/ HID) RIGHT HIGH BEAM HEADLIGHT (W/O HID) SHORT CONNECTOR (ON LEFT FRONT OF ENGINE COMPARTMENT) SOLID STATE TAILLIGHT RELAY US MODELS W/ HID W/O HID W/O HID (ENGINE HARNESS, LEFT SIDE OF ENGINE) WHT WIRE WHT/BLK WIRE YEL WIRE

ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE CHG- RHG RH+ RHT RH- RHE IG COMBINATION METER ECU-IG FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPT) GENERATOR GRN/BLK WIRE GRN/YEL WIRE GRY/YEL WIRE HEAD- LAMP RELAY HEADLIGHT BEAM LEVEL CNTRL WARNING LIGHT HEADLIGHT BEAM LEVEL CONTROL ECU (BEHIND LEFT END OF DASH) HEATER FUSE HEIGHT CONTROL SENSOR (UNDER REAR OF VEHICLE) HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/C 4 (BEHIND LEFT KICK PANEL) J/C 9 (BEHIND RIGHT KICK PANEL) LEFT HEADLIGHT BEAM LEVEL CONTROL ACTUATOR MAIN FUSE PNK SGR WIRE PNK WIRE PNK/BLK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HEADLIGHT BEAM LEVEL CONTROL ACTUATOR SBR WNG LHG LH+ LHT LH- LHE SPDL SPDN VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/GRN WIRE

2 INDICATOR 5 12 PI SPD A/T OIL TEMP INDICATOR ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU/WHT WIRE BRAKE INDICATOR BRN WIRE BRN/WHT WIRE COMBINATION METER ECU CRUISE CONTROL ECU (BEHIND LEFT SIDE OF DASH) CRUISE CONTROL, ENGINE CONTROL, NAVIGATION SYSTEMS DATA LINK CONNECTOR (DLC) 3 (PARTIAL) (UNDER LEFT SIDE OF DASH) DRIVER DOOR ECU (IN LEFT FRONT DOOR) ECT SNOW INDICATOR ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE CONTROLS SYSTEM FUEL GAUGE FUEL INDICATOR FUEL SENDER (MAIN) (ON TOP OF FUEL TANK) FUEL SENDER (SUB) (UNDER CENTER OF VEHICLE) GRN WIRE GRN/BLK WIRE GRN/YEL WIRE GRY/BLU WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM ANTI-LOCK BRAKES SYSTEM HEATER FUSE HOT AT ALL TIMES HOT IN ON OR START INDICATOR INSTRUMENT CONTROL PANEL INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) LEFT TURN INDICATOR LIGHT FAILURE SENSOR (IN LEFT SIDE OF LUGGAGE COMPARTMENT) LT GRN/BLK WIRE LT GRN/RED WIRE MPX ODLP ODNS OIL INDICATOR ORG/ WIRE PNK WIRE REAR LIGHTS INDICATOR RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RIGHT TURN INDICATOR SEAT BELT INDICATOR SOLID STATE SPEEDOMETER SRS-B FUSE SUPPLEMENTAL RESTRAINTS SYSTEM TACHOMETER TO COMBINATION METER ECU (DIAGRAM 2 OF 2) VIO/WHT WIRE WATER TEMP GAUGE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED (OR YEL/BLK) WIRE YEL/RED WIRE

BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM ENGINE COOLANT TEMPERATURE SENSOR (TOP FRONT OF ENGINE) GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) HEATER FUSE INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) STOP FUSE J/B 3 (BEHIND UPPER CENTER OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 10 (BEHIND RIGHT SIDE OF DASH) LT GRN WIRE MALF. IND. LAMP O/D OFF IND OBD FUSE ORG/ WIRE PNK/BLK WIRE PTNK RED WIRE RED/WHT WIRE RED/YEL WIRE SIL STOPLIGHT SWITCH TAC TACH THROTTLE POSITION SENSOR (ON THROTTLE BODY) VAPOR PRESSURE SENSOR (UNDER CENTER REAR OF VEHICLE) VIO/WHT WIRE VSS VSV (ACIS 1) (ON TOP CENTER OF ENGINE) VSV (ACIS 2) (ON TOP CENTER OF ENGINE) VSV (ACM) (ON RIGHT FRONT CENTER OF ENGINE COMPT) VSV (CANISTER CLOSED VALVE) (LEFT REAR OF ENGINE COMPT) VSV (EVAP) (ON TOP CENTER OF ENGINE) VSV (PRESSURE SWITCHING VALVE) (UNDER CENTER REAR OF VEHICLE) WHT WIRE WHT/BLU WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE