Lexus IS I (1999-2005) mpx Wiring diagrams

1 2 3 4 (5-6 NOT USED) 7 8 (9-11 NOT USED) 12 1 4 11 13 17 30 31 EOM BATT KSW MREL IGSW IMLD CODE A/C CONTROL ASSEMBLY BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRN WIRE CODE COMBINATION METER DATA LINK CONNECTOR 3 (BEHIND LOWER LEFT SIDE OF DASH) DOME FUSE MPX-B FUSE DOOR DL FUSE DSWH LUG NAVI EC (AT LEFT FENDER APRON) ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) ENGINE HOOD COURTESY SWITCH (ON FRONT CENTER OF ENGINE COMPT, NEAR HOOD LATCH) FUSE GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND HOT AT ALL TIMES HOT IN ON OR START IGN FUSE IH (AT RIGHT SIDE OF FIREWALL) IND IND SECURITY J/C 3 (NEAR ENGINE CONTROL MODULE) J/C 5 (ABOVE DRIVER SIDE J/B) J/C 6 (BEHIND LEFT SIDE OF DASH, FORWARD OF INSTRUMENT CLUSTER) J/C 7 (BEHIND UPPER RIGHT SIDE OF DASH) MPX MULTI- DISPLAY DR ORG/ WIRE PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) PNK/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RXCK SH- SH HORN SIL CG THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) THEFT DETERRENT HORN (ON LEFT SIDE OF ENGINE COMPT, ON STRUT TOWER) TRANSPONDER KEY AMPLIFIER (ON STEERING COLUMN, NEAR IGNITION SWITCH) TXCT TXCT RXCK UNLOCK WARNING SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE

A/C CONTROL ASSEMBLY ALT FUSE ALT-S FUSE BATTERY BATTERY GROUND BLK/BLU WIRE BLU WIRE BLU/RED WIRE BRN/WHT WIRE CHARGE INDICATOR COMBINATION METER COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) ENGINE ROOM 1 R/B (ON RIGHT REAR OF ENGINE COMPT) GAUGE FUSE GENERATOR IG HOT AT ALL TIMES HOT IN ON OR START IE (AT LEFT FRONT FLOOR PANEL CENTER) MPX MPX-B FUSE NCA WIRE ORG/ WIRE PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) RED/BLU WIRE RED/YEL WIRE THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) WHT/BLU WIRE

16 20 22 3 TACH 19 3 12 TC LA SIL A/C CONTROL ASSEMBLY BK (AT RIGHT FRONT FLOOR PANEL) BLK WIRE BLK/YEL WIRE BLU WIRE BODY ECU (BEHIND LOWER LEFT END OF DASH, INTEGRAL WITH DRIVER SIDE J/B) BRN WIRE CENTER AIR BAG SENSOR ASSEMBLY (BELOW CENTER OF DASH, ON TRANSMISSION TUNNEL) CG SG A/B SIL COMBINATION METER D/G DATA LINK CONNECTOR 3 (BEHIND LOWER LEFT SIDE OF DASH) DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EB (AT CENTER LEFT SIDE OF INTAKE MANIFOLD) ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) HOT AT ALL TIMES OBD FUSE IH (AT RIGHT SIDE OF FIREWALL) J/C 16 (SEDAN) (ABOVE RIGHT REAR FENDERWELL) LT GRN WIRE MPX MPX+ MPX- MULTI-DISPLAY ORG/ WIRE PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) POWER WINDOW MASTER SWITCH RED/WHT WIRE SIL SKID CONTROL ECU TAC TC TS WFSE BAT THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) VIO WIRE WAGON WFSE TC WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL/RED WIRE

18 8 16 7 1 GND +B IG A/C CONDENSER FAN MOTOR A/C CONTROL ASSEMBLY A/C DIODE (BEHIND RIGHT END OF DASH) A/C SINGLE PRESSURE SWITCH ACMG BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CDS FAN FUSE DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EC (AT LEFT FENDER APRON) ECU-IG FUSE ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) ENGINE ROOM 1 R/B (ON RIGHT REAR OF ENGINE COMPT) ENGINE ROOM R/B 3 (ON LEFT SIDE OF ENGINE COMPT) FAN FAN 1 RELAY FAN 2 RELAY FAN 3 RELAY GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IH (AT RIGHT SIDE OF FIREWALL) INSTRUMENT CLUSTER SYSTEM JUNCTION CONNECTOR 10 (BEHIND UPPER RIGHT SIDE OF DASH) JUNCTION CONNECTOR 19 JUNCTION CONNECTOR 3 (ON LEFT SIDE OF ENGINE COMPT, NEAR ENGINE CONTROL MODULE) MPX MPX-B FUSE ORG/ WIRE PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) RADIATOR FAN MOTOR RADIO 2 FUSE RDI FAN FUSE RED WIRE RED/YEL WIRE WATER TEMPERATURE SWITCH (ON RIGHT SIDE OF RADIATOR) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE

3 2 5 1 PRG RDA +B 5 18 BDM TX A/C CONTROL ASSEMBLY BACK DOOR COURTESY SWITCH BJ (AT LEFT FRONT FLOOR PANEL) BK (AT RIGHT FRONT FLOOR PANEL) BL SEDAN BLK WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRN/WHT WIRE COMBINATION METER DOOR IND 17 15 19 DOOR ON OFF ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPARTMENT, IN PROTECTIVE CASE) GRN/BLK WIRE GRN/RED WIRE GRY/BLU WIRE IE (AT LEFT FRONT FLOOR PANEL CENTER) INTERIOR LIGHT) J/C 11 (IN LEFT FRONT DOOR) J/C 15 (BEHIND LEFT FENDERWALL) J/C 15 (BEHIND LEFT FENDERWELL) LEFT FRONT DOOR KEY LOCK, UNLOCK SWITCH, DOOR LOCK DETECTION SWITCH LEFT REAR DOOR COURTESY SWITCH RIGHT REAR DOOR COURTESY SWITCH LEFT VANITY LIGHT LOCK LOCK DECECT LSWD KUL KL LT GRN/BLK WIRE LUGGAGE COMPARTMENT DOOR COURTESY SWITCH LUGGAGE COMPARTMENT LIGHT MPX ORG/ WIRE PERSONAL LIGHT (MOON ROOF CONTROL SWITCH) (W/ MOON ROOF) PERSONAL LIGHT (W/O MOON ROOF) POWER WINDOW MASTER SWITCH RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT VANITY LIGHT SEDAN WAGON THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) UNLK WAGON WAGON SEDAN WHT WIRE WHT/BLK WIRE WIRE TO FFC HOLDER WIRELESS DOOR LOCK CONTROL RECEIVER YEL WIRE YEL/RED WIRE

A/C CONTROL ASSEMBLY MPX+ BLK WIRE BLU WIRE BODY ECU DFG COMBINATION METER MPX+ DEFOGGER, MIRROR HEATER SWITCH MPX- DEICER RELAY DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EC (AT LEFT FENDER APRON) ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT) FR DEF FUSE FRONT WINDOW DIECER GAUGE FUSE HOT AT ALL TIMES HOT IN ON OR START MPX ORG/ WIRE THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) WHT WIRE WHT/BLK WIRE

13 14 FE FR 3 1 PKB MPX- 8 18 +B GND A/C CONTROL ASSEMBLY A/T ABS IND. ANTI-LOCK BRAKES SYSTEM ANTI-THEFT SYSTEM HEADLIGHTS SYSTEM BEAM IND BEAM LEVEL IND BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BODY ECU BRAKE FLUID LEVEL WARNING SWITCH (ON BRAKE FLUID RESERVOIR) BRAKE IND BRL PKB VSCW BRN WIRE BRN/WHT WIRE BUZZER CHARGE IND COMBINATION METER COMPUTER DATA LINES SYSTEM CRUISE IND DOOR IND DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) DRIVER SIDE SIDE J/B (BEHIND LOWER LEFT END OF DASH) ECT PWR IND ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) ENGINE CONTROLS SYSTEM ENGINE CONTROLS, NAVIGATION SYSTEM ENGINE OIL LEVEL SENSOR (ON LOWER LEFT FRONT OF ENGINE) ENGINE OIL PRESSURE SWITCH (ON LEFT FRONT OF ENGINE) FUEL FUEL IND FUEL SENDER (SUB) (UNDER RIGHT SIDE OF VEHICLE, FORWARD OF RIGHT FENDERWELL) FUEL SENDER (UNDER LEFT SIDE OF VEHICLE, FORWARD OF LEFT FENDERWELL) GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/YEL WIRE GRY WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START HOT W/ TAIL RELAY ENERGIZED ID (AT LEFT SIDE OF FIREWALL) IE (AT LEFT FRONT FLOOR PANEL CENTER) IG+ SI SE 3 2 IH (AT RIGHT SIDE OF FIREWALL) ILLUMINATION JUNCTION CONNECTOR 10 (BEHIND UPPER RIGHT SIDE OF DASH) JUNCTION CONNECTOR 5 (ABOVE DRIVER SIDE J/B) JUNCTION CONNECTOR 6 (FORWARD OF INSTRUMENT CLUSTER) JUNCTION CONNECTOR 7 (BEHIND UPPER RIGHT SIDE OF DASH) LBL LCD SPEEDOMETER LT GRN WIRE LT GRN/BLK WIRE M/T MALFUNCTION INDICATOR LAMP MOL MOMENTARY FUEL CONSUMPTION MOPS MPX MPX-B FUSE OIL LEVEL IND OIL PRESSURE IND ORG/ WIRE OUT SIDE TEMP GAUGE PANEL FUSE 7.5 PARKING BRAKE SWITCH (AT BASE OF PARKING BRAKE LEVER) PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) SRS-B FUSE RADIO 2 FUSE REAR LIGHTS IND RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE SEAT BELT IND SECURITY IND SKID CONTROL ECU SLIP IND SNOW IND SRS IND TACHOMETER TRAC OFF IND TURN LH IND TURN RH IND VEHICLE SPEED SENSOR (COMBINATION METER) (ON LEFT REAR OF TRANSMISSION) VIO/GRN WIRE VOLT VSC IND WATER TEMP 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

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

ALT FUSE BLK WIRE BLU WIRE BM (AT LEFT UPPER SIDE OF BACK PANEL) NOISE FILTER (REAR WINDOW DEFOGGER) BODY ECU DFG COMBIN -ATION METER MPX- DEFOGGER, MIRROR HEATER SWITCH (A/C CONTROL ASSEMBLY) MPX- MHTR DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT) ENGINE ROOM 1 R/B (ON RIGHT REAR OF ENGINE COMPT) GAUGE FUSE GRN WIRE GRN/ORG WIRE HOT AT ALL TIMES HOT IN ON OR START IH (AT RIGHT SIDE OF FIREWALL) J/C 11 (IN LEFT FRONT DOOR) J/C 5 (BEHIND LEFT END OF DASH) LEFT MIRROR HEATER (LEFT REMOTE CONTROL MIRROR) MIR HTR FUSE MIR HTR RELAY MPX NOISE FILTER (DEF CDS) ORG/ WIRE PASSENGER SIDE J/B (BELOW LOWER RIGHT END OF DASH) PASSENGER SIDE J/B (BELOW LOWER RIGHT END OF DASH) REAR WINDOW DEFOGGER RED WIRE RIGHT MIRROR HEATER (RIGHT REMOTE CONTROL MIRROR) RR DEF FUSE RR DEF RELAY THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) WAGON SEDAN WHT WIRE WHT/BLK WIRE

A/C CONTROL ASSEMBLY A/T SHIFT MAIN SWITCH (INTEGRAL TO COMBINATION SWITCH) BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN (OR WHT/BLK) WIRE BRN WIRE BRN/YEL (OR BRN) WIRE BRN/YEL WIRE EA (FRONT SIDE OF INTAKE MANIFOLD) ECC SFTD ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE ROOM R/B 3 (ON LEFT SIDE OF ENGINE COMPT) FUEL PMP RELAY GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE IGN FUSE IH (AT RIGHT SIDE OF FIRE- WALL) J/C 15 (ON LEFT SIDE OF LUGGAGE COMPT) J/C 7 (BEHIND UPPER RIGHT SIDE OF DASH) LT GRN/BLK WIRE MPX PASSENGER SIDE J/B (BEHIND LOWER RIGHT END OF DASH) PNK 17 18 19 20 WIRE PNK WIRE PWR RED/BLU WIRE RED/WHT WIRE SFTU SNOW VSV (ACIS) (ON LEFT SIDE OF ENGINE) VSV (CANISTER CLOSED VALVE) (ON RIGHT FRONT OF ENGINE) VSV (PRESSURE SWITCHING VALVE) (UNDER CENTER REAR OF ENGINE) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL/GRN WIRE YEL/RED WIRE