Lexus IS I (1999-2005) sedan Wiring diagrams

1 2 4 5 6 7 PRG RDA LSR RCTY DCTY LGCY 2 6 12 BECU BACK DOOR COURTESY SWITCH BLK/RED WIRE BLU WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BODY ECU (BEHIND LOWER LEFT END OF DASH, INTEGRAL WITH DRIVER SIDE J/B) BSUB BZR DOOR FUSE DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) ECU-IG FUSE FLASHER RELAY GRN/WHT WIRE GROUND GRY/BLU WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START J/C 12 (ABOVE LEFT LEFT REAR WHEELWELL) J/C 17 (ABOVE LEFT REAR FENDERWELL) JUNCTION CONENCTOR 5 (BEHIND LEFT END OF DASH, ABOVE DRIVER SIDE J/B) JUNCTION CONNECTOR 16 (ABOVE RIGHT REAR FENDERWELL) JUNCTION CONNECTOR 6 (BEHIND LEFT SIDE OF DASH, FORWARD OF INSTRUMENT CLUSTER) KEYLESS BUZZER (NEAR TOP OF LEFT FRONT WHEELWELL, INSIDE FENDER) LEFT FRONT DOOR COURTESY SWITCH LEFT REAR DOOR COURTESY SWITCH LEFT REAR DOOR LOCK DETECTION SWITCH LUGGAGE COMPT DOOR COURTESY SWITCH ORG/ WIRE PCTY HAZ LSWP RADIO 2 FUSE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY SWITCH RIGHT REAR DOOR COURTESY SWITCH SEDAN SEDAN WAGON TAIL RELAY WAGON WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL/RED WIRE

5 18 9 6 15 10 BDM TX ALT FUSE BK (AT RIGHT FRONT FLOOR PANEL) BLK WIRE BLK/ WHT WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EFI FUSE EFI RELAY ENGINE ROOM 1 R/B (ON RIGHT REAR OF ENGINE COMPT) ENGINE ROOM 2 R/B (ON RIGHT REAR OF ENGINE COMPT) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE HEAD LP RELAY HEADLIGHTS SYSTEM HORN FUSE HORN RELAY HORN SYSTEM HOT AT ALL TIMES IH (AT RIGHT SIDE OF FIREWALL) J/C 12 (ABOVE LEFT REAR FENDERWELL) J/C 17 (ABOVE LEFT REAR FENDERWELL) (SEDAN) JUNCTION CONNECTOR 15 (ON LEFT SIDE OF LUGGAGE COMPT, BEHIND LEFT FENDERWELL) JUNCTION CONNECTOR 16 (ABOVE RIGHT REAR FENDERWELL) KL KUL LSWD LEFT FRONT DOOR KEY LOCK, UNLOCK SWITCH, DOOR LOCK DETECTION SWITCH LOCK DETECT LUGGAGE COMPARTMENT DOOR KEY UNLOCK SWITCH MAIN FUSE ORG/ WIRE POWER WINDOW MASTER SWITCH RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR LOCK DETECTION SWITCH RIGHT REAR DOOR LOCK DETECTION SWITCH SEDAN UNLK LOCK WAGON WHT WIRE WHT/BLK WIRE YEL/RED WIRE

1 2 7 5 4 6 PRG RDA LGCY RCTY LSR DCTY 13 19 5 12 11 1 7 9 14 8 BDSU 3 4 1 IG BACKDOOR OPENER SWITCH (WAGON) BK (AT RIGHT FRONT FLOOR PANEL) BL (AT LEFT REAR QUARTERPANEL) BK (AT RIGHT FRONT FLOOR PANEL) BLK WIRE BLK/RED WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BN (AT RIGHT UPPER SIDE OF BACK PANEL) BODY ECU (BEHIND LOWER LEFT END OF DASH, INTEGRAL WITH DRIVER SIDE J/B) BRN WIRE BSUB DOME FUSE DOOR FUSE DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EB (AT CENTER LEFT SIDE OF INTAKE MANIFOLD) ECU-IG FUSE GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START ID (AT LEFT SIDE OF FIREWALL) IGNITION KEY CYLINDER LIGHT IH (AT RIGHT SIDE OF FIREWALL) J/C 15 (BEHIND LEFT FENDERWELL) J/C 16 (ABOVE RIGHT REAR FENDER- WELL) J/C 16 (ABOVE RIGHT REAR FENDERWELL) J/C 5 (ABOVE DRIVER SIDE J/B) J/C 7 (BEHIND UPPER RIGHT SIDE OF DASH) LEFT FRONT DOOR COURTESY LIGHT LEFT FRONT DOOR COURTESY SWITCH LEFT REAR DOOR LOCK DETECTION SWITCH LT GRN WIRE LT GRN/BLK WIRE MPX-B FUSE ORG/ WIRE PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) PCLP DCLP PML PMUL LSWP PCTY RADIO 2 FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT DOOR LOCK CONTROL SWITCH RIGHT FRONT DOOR COURTESY LIGHT RIGHT FRONT DOOR COURTESY SWITCH RIGHT FRONT DOOR LOCK DETECTION SWITCH RIGHT REAR DOOR LOCK DETECTION SWITCH SEDAN SIL CG SG SRS-B FUSE 7.5 WAGON WHT WIRE WHT/BLK WIRE YEL WIRE YEL/RED WIRE

BACK DOOR OPENER RELAY BACK DOOR COURTESY SWITCH AND OPENER MOTOR BJ (BASE OF LEFT "B" PILLAR) BLK WIRE BODY ECU CENTER AIRBAG SENSOR ASSEMBLY CIGARETTE LIGHTER DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) FLASH RELAY FRONT AND REAR WIPER AND WASHER SWITCH (COMBINATION SWITCH) FUEL PUMP HIGH MOUNTED STOP LIGHT JUNCTION CONNECTOR J/C 11 (IN LEFT FRONT DOOR) LEFT BUCKLE SWITCH LEFT FRONT DOOR KEY LOCK, UNLOCK SWITCH, DOOR LOCK DETECTION SWITCH LEFT LICENSE PLATE LIGHT LEFT REAR DOOR LOCK MOTOR AND DOOR LOCK DETECTION SWITCH LEFT REAR POWER WINDOW CONTROL SWITCH LEFT REMOTE CONTROL MIRROR LEFT TAILLIGHT (LEFT REAR COMBINATION LIGHT) LIGHT CONTROL SWITCH AND DIMMER SWITCH (COMBINATION SWITCH) LIGHT FAILURE SENSOR LUGGAGE COMPARTMENT DOOR KEY UNLOCK SWITCH LUGGAGE COMPARTMENT DOOR OPENER RELAY NOISE FILTER (DEF CDS) NOISE FILTER (DEF CDS) NOISE FILTER (STOP LIGHT) NOISE FILTER (STOP LIGHT) REAR SIDE MARKER LIGHT POWER SEAT CONTROL SWITCH (DRIVER'S SEAT) POWER WINDOW MASTER SWITCH REAR FOG LIGHT SWITCH REMOTE CONTROL MIRROR SWITCH RIGHT STOP LIGHT (RIGHT REAR COMBINATION LIGHT) RIGHT TAILLIGHT (RIGHT REAR COMBINATION LIGHT) SEAT HEATER (DRIVER'S SEAT) SEAT HEATER (DRIVER'S SEAT) LEFT BUCKLE SWITCH SEDAN SEDAN ONLY SEDAN WAGON STEERING SENSOR THEFT DETERRENT ECU TO GROUND BM (DIAGRAM 2 OF 3) TO J/C 5 (DIAGRAM 2 OF 3) TRANSPONDER KEY AMPLIFIER TURN SIGNAL SWITCH (COMBINATION SWITCH) UNLOCK WARNING SWITCH W/ POWER SEAT WAGON WAGON ONLY WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK CONTROL RECEIVER

A/C CONTROL ASSEMBLY A/T ABS, BA, TRAC ACTUATOR ABS, BA, TRAC, VSC ACTUATOR BK (UNDER RIGHT FRONT SEAT) BLK WIRE BRN WIRE CENTER AIR BAG SENSOR ASSEMBLY COMBINATION METER DATA LINK CONNECTOR (DLC) 3 DAYTIME RUNNING LIGHT RELAY (MAIN) DAYTIME RUNNING LIGHT RELAY NO. 3 DAYTIME RUNNING LIGHT RELAY NO. 4 DAYTIME RUNNING LIGHT RESISTOR EFI RELAY ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE ROOM NO. 1 R/B (RIGHT REAR OF ENGINE COMPT) ENGINE ROOM NO. 2 R/B (RIGHT REAR OF ENGINE COMPT) GLOVE BOX LIGHT HEADLIGHT BEAM LEVEL CONTROL ECU IH (BEHIND RIGHT KICK PANEL) JUNCTION CONNECTOR J/C 16 (ABOVE RIGHT REAR FENDER- WELL) JUNCTION CONNECTOR J/C 7 (BEHIND UPPER RIGHT SIDE OF DASH) M/T NAVIGATION ECU PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) POWER OUTAGE (LUGGAGE) POWER OUTLET POWER OUTLET RELAY POWER SEAT CONTROL SWITCH (FRONT PASSENGER'S SEAT) RHEOSTAT RIGHT BUCKLE SWITCH AND SEAT BELT WARNING OCCUPANT DETECTION SENSOR RIGHT DOOR LOCK CONTROL SWITCH RIGHT FRONT DOOR LOCK MOTOR AND DOOR LOCK DETECTION SWITCH RIGHT FRONT FOG LIGHT RIGHT FRONT PARKING LIGHT RIGHT FRONT POWER WINDOW CONTROL SWITCH RIGHT FRONT SIDE MARKER LIGHT RIGHT FRONT SIDE TURN SIGNAL LIGHT RIGHT FRONT TURN SIGNAL LIGHT RIGHT HEADLIGHT CONTROL ECU RIGHT MIRROR HEATER (REMOTE CONTROL MIRROR) RIGHT REAR DOOR LOCK MOTOR AND DOOR LOCK DETECTION SWITCH RIGHT REAR POWER WINDOW CONTROL SWITCH SEAT HEATER (FRONT PASSENGER'S SEAT) SEAT HEATER SWITCH (DRIVER'S SEAT) SEAT HEATER SWITCH (FRONT PASSENGER'S SEAT) SEDAN SHIFT LOCK CONTROL ECU STARTER RELAY TRAC OFF SWITCH TRAC OFF SWITCH AND SNOW SWITCH W/ POWER SEATS W/ VSC W/O POWER SEATS W/O VSC WAGON WATER TEMPERATURE SWITCH WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK CONTROL RECEIVER WOOFER

2 9 10 11 12 13 14 20 21 22 TAIL CLTB IG 4 5 6 7 LSR RCTY DCTY LGCY ANTI-THEFT SYSTEM AUTOMATIC LIGHT CONTROL SENSOR (ON TOP LEFT SIDE OF DASH) BL (AT LEFT REAR QUARTERPANEL) BLK/RED WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BN (AT RIGHT UPPER SIDE OF BACK PANEL) BODY ECU (BEHIND LOWER LEFT END OF DASH, INTEGRAL WITH DRIVER SIDE J/B) BRN WIRE BSUB CLTB CLTE CLTS CLTS CLTE COMBINATION SWITCH COMPUTER DATA LINES SYSTEM DIMMER SWITCH DIODE (FOG LIGHT) DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) DOOR FUSE FOGLIGHT SWITCH FUSE GRN WIRE GRN/ORG WIRE GRN/YEL WIRE HEAD HIGH HIGH LOW FLASH FLASH LOW HOT AT ALL TIMES HOT IN ACC OR RUN HOT W/ TAIL RELAY ENERGIZED JUNCTION CONNECTOR 15 (BEHIND LEFT FENDERWELL) JUNCTION CONNECTOR 5 (BEHIND LEFT END OF DASH, ABOVE DRIVER SIDE J/B) LEFT REAR FOG LIGHT (LEFT REAR COMBINATION LIGHT) LIGHT CONTROL SWITCH MPX-B FUSE OFF ON OFF ON ORG/ WIRE PANEL FUSE PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) PCTY LSWP RADIO 2 FUSE REAR FOG LIGHT SWITCH RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT REAR FOG LIGHT (RIGHT REAR COMBINATION LIGHT) SEDAN SOLID STATE TAIL TAIL HEAD HEAD AUTO OFF OFF AUTO THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) W/ REAR FOG LIGHT W/O REAR FOG LIGHT WAGON WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE

+B AUI- AUO- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 AUI+ AUO+ 1 2 3 4 5 6 7 8 9 10 VR 2 1 (A/T) (M/T) 2 5 3 1 4 6 ILL ILL 3 2 (A/T) (M/T) 8 1 FL- FL+ A/T A/T M/T BK (AT RIGHT FRONT FLOOR PANEL) BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CLUTCH COMBINATION METER CTX+ VG CTX- CTX- CTX+ NAVI-MUTE DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) DRIVER SIDE J/B GAUGE FUSE (BEHIND LOWER LEFT END OF DASH) ECU-IG FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT IN HOT IN ACC OR ON HOT IN ON OR START IE (AT LEFT FRONT FLOOR PANEL CENTER) IF (AT RIGHT FRONT PANEL CENTER) IG SPD GTX+ J/C 1, 2 (ON LEFT SIDE OF ENGINE COMPT, NEAR ENGINE CONTROL MODULE) J/C 16 (ABOVE RIGHT REAR FENDERWALL) J/C 19 J/C 6 (BEHIND LEFT SIDE OF DASH, FORWARD OF INSTRUMENT CLUSTER) J/C 7 (BEHIND UPPER RIGHT SIDE OF DASH) LEFT FRONT DOOR SPEAKER LEFT TWEETER M/T M/T A/T MULTI-DISPLAY NAVI NAVIGATION ECU NCA WIRE ORG/ WIRE PARKING BRAKE SWITCH (AT BASE OF PARKING BRAKE LEVER) PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) PNK WIRE RADIO 2 FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE REMOTE CONTROLLER REV MUTE SE SI IG+ SEDAN SKID CONTROL ECU STARTER FUSE STEREO COMPONENT AMPLIFIER (BEHIND RIGHT END OF DASH) SWITCH SYNC TC PKB GTX- THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) TV FUSE VEHICLE SPEED SENSOR (COMBINATION METER) (M/T) VIO WIRE WAGON WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

5 18 9 6 15 10 BDM TX BACK DOOR OPENER RELAY (WAGON) (ABOVE LEFT REAR FENDERWELL) BK (AT RIGHT FRONT FLOOR PANEL) BLK/ WHT WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE DETECTION LOCK DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE JUNCTION CONNECTOR 16 (ABOVE RIGHT REAR FENDERWELL) KL KUL LSWD LOCK LOCK DETECTION ORG/ WIRE PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) POWER WINDOW MASTER SWITCH RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR LOCK MOTOR, DOOR LOCK DETECTION SWITCH RIGHT REAR DOOR LOCK MOTOR, DOOR LOCK DETECTION SWITCH SEDAN UNLK UNLK RIGHT DOOR LOCK CONTROL SWITCH WAGON WAGON SEDAN WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL BLU/ WIRE YEL/RED WIRE

A/C CONTROL ASSEMBLY BACK DOOR COURTESY SWITCH, OPENER MOTOR (AT CENTER REAR OF LUGGAGE COMPT) BLU WIRE BLU/YEL WIRE BRN WIRE COMBINATION METER DATA LINK CONNECTOR 3 (BEHIND LOWER LEFT SIDE OF DASH) CG SIL DOME FUSE EB (AT CENTER LEFT SIDE OF INTAKE MANIFOLD) ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT, IN GRN/YEL WIRE HOT AT ALL TIMES IH (AT RIGHT SIDE OF FIREWALL) JUNCTION CONNECTOR 12 (ABOVE LEFT REAR FENDERWELL) JUNCTION CONNECTOR 17 (ABOVE LEFT REAR FENDERWELL) LUGGAGE COMPT DOOR COURTESY SWITCH, OPENER MOTOR MPX MPX-B FUSE ORG/ WIRE PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) PROTECTIVE CASE) RED/YEL WIRE SEDAN THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) WAGON WHT WIRE WHT/BLK WIRE