Lexus RX I (1997-2003) heater fuse 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 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

26 6 CF ACMG A/C CONDENSER FAN MOTOR (IN RIGHT FRONT OF ENGINE COMPT) A/C DIODE (BEHIND UPPER LEFT SIDE OF DASH) A/C SINGLE PRESSURE SWITCH (ON REFRIGERANT LINE, NEAR RECEIVER-DRIER) BLK WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE CDS FUSE ENGINE ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) FAN 1 RELAY FAN 2 RELAY FAN 3 RELAY FUSIBLE LINK BLOCK (IN ENGINE ROOM J/B, ON LEFT SIDE OF ENGINE COMPARTMENT) HEATER FUSE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT SIDE 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) LT GRN/BLK WIRE R/B 2 (INSIDE ENGINE ROOM J/B) RADIATOR FAN MOTOR (IN LEFT FRONT OF ENGINE COMPARTMENT) RDI FUSE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE WATER TEMPERATURE SWITCH 1 (IN RIGHT FRONT OF ENGINE COMPARTMENT) WATER TEMPERATURE SWITCH 2 (ON TOP WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL 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 BLU WIRE BLU/BLK WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) DFG ENGINE ROOM JUNCTION BLOCK (ON LEFT SIDE OF ENGINE COMPARTMENT) FR DEF FUSE FRONT WINDOW DEFOGGER FUSIBLE LINK BLOCK (IN ENGINE ROOM JUNCTION BLOCK) GAUGE FUSE GRY WIRE GRY/RED WIRE HEATER FUSE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL JUNCTION BLOCK (BEHIND LEFT SIDE OF DASH) J/C 14 (IN LEFT SIDE OF TAILGATE) J/C 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 5 (LEFT KICK PANEL) J/C 9 (BEHIND RIGHT KICK PANEL) LEFT REMOTE CONTROL MIRROR MIRROR HEATER MIRROR HEATER MIRROR HEATER RELAY (IN RELAY BLOCK 1) NOISE FILTER (REAR WINDOW DEFOGGER) REAR DEFOG RELAY RED WIRE RED/YEL WIRE RIGHT REMOTE CONTROL MIRROR RR DEF FUSE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 HS- ST- T+ IL BI (UPPER LEFT SIDE OF REAR AXLE HOUSING) BLK WIRE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HAZARD FUSE HEATER FUSE HIGH MOUNTED STOP LIGHT HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND LEFT KICK PANEL) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 1 (IN ENGINE COMPARTMENT, ON RIGHT FRONT FENDER) J/C 12 (IN LEFT SIDE OF LUGGAGE COMPARTMENT) J/C 13 (IN LEFT SIDE OF LIFTGATE) J/C 14 (IN LEFT SIDE OF LIFTGATE) J/C 15 (UNDER RIGHT REAR SEAT) J/C 2 (IN LEFT FRONT OF ENGINE COMPARTMENT, BEHIND HEADLIGHT) JUNCTION CONNECTORS 3, 4 (IN LEFT KICK PANEL) LEFT FRONT TURN SIGNAL LIGHT LEFT TURN SIGNAL LIGHT LIGHT FAILURE SENSOR (IN LEFT SIDE OF LUGGAGE COMPARTMENT) LT/S RT/S TL GND ORG/ WIRE REAR LIGHTS WARNING LIGHT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT TURN SIGNAL LIGHT RIGHT REAR COMBINATION LIGHT RIGHT REAR SIDE MARKER LIGHT RIGHT REAR TURN SIGNAL LIGHT RIGHT STOP LIGHT RIGHT STOP LIGHT RIGHT TAIL LIGHT RIGHT TURN SIGNAL LIGHT SOLID STATE ST+ IG T- STOP FUSE STOP LIGHT SWITCH TL LT RT GND TOWING FUSE TRAILER CONVERTER (FORWARD OF LEFT TAILLIGHT) TL L/S R/T TRAILER SOCKET (BELOW LEFT SIDE OF REAR BUMPER) 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

ABS FUSE AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM COOLING FANS SYSTEM ALT FUSE ANTI-LOCK BRAKES SYSTEM BATTERY BLK WIRE BLU WIRE COIL CONTACT COMPUTER DATA LINES SYSTEM D RR DOOR FUSE DEFOGGER SYSTEM ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) EXTERIOR LIGHTS SYSTEM, FOGLIGHT RELAY FR DEF FUSE FR FOG FUSE FROM S/ROOF FUSE (DIAGRAM 1 OF 4) FUSE FUSIBLE LINK BLOCK GENERATOR GRN WIRE GRY WIRE HEATER FUSE INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) INTERIOR LIGHTS SYSTEM NAVIGATION SYSTEM OBD FUSE ORG/ WIRE P FR DOOR FUSE P RR DOOR FUSE PANEL FUSE POWER FUSE POWER TOPS SYSTEM RDI FUSE CDS FUSE RED WIRE RR DEF FUSE S/ROOF FUSE SEAT HTR FUSE SEATS SYSTEM SEATS SYSTEM, MEMORY SYSTEM STARTER STOP FUSE TAIL FUSE TAILLIGHT RELAY TO ENGINE ROOM J/B TO ENGINE ROOM J/B (R/B 2, A/F HTR TO IGNITION SWITCH (CAVITY 2) (DIAGRAM 3 OF 4) TO POWER FUSE (DIAGRAM 1 OF 4) TO PWR OUTLET FUSE (DIAGRAM 4 OF 4) WHT WIRE YEL WIRE

AIR CONDITIONING SYSTEM, COOLING FANS SYSTEM, DEFOGGER SYSTEM BLK WIRE BLU WIRE BODY COMPUTER SYSTEM, WIPER/WASHER SYSTEM CELLULAR PHONES SYSTEM, POWER ANTENNA SYSTEM ECU-IG FUSE ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM, TRANSMISSIONS SYSTEM ENGINE CONTROLS SYSTEM STARTING/CHARGING SYSTEM FROM INSTRUMENT PANEL J/B FROM WIPER FUSE (DIAGRAM 3 OF 4) GAUGE FUSE GRY WIRE HEATER FUSE IGN FUSE IGNITION SWITCH INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) LOCK ON NAVIGATION SYSTEM ORG/ WIRE PNK WIRE RED WIRE RR WIP FUSE WASHER FUSE SRS-IG FUSE SHIFT INTERLOCK SYSTEM STARTER FUSE STARTING/ CHARGING SYSTEM SUPPLEMENTAL RESTRAINT SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TO GAUGE FUSE (DIAGRAM 3 OF 4) TO INSTRUMENT PANEL J/B WHT WIRE WIPER FUSE WIPER/WASHER SYSTEM YEL WIRE