Toyota Tundra I facelift (2002-2006) engine control module (behind right side of dash) Wiring diagrams

2 8 4 15 10 CL+ CL- 4 16 1 20 15 8 6 17 MREL BATT +B STP IGSW +BM A/T ACCEL POSITION SENSOR (ON LEFT SIDE OF ENGINE) ANTI-LOCK BRAKES SYSTEM BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BRN WIRE CL- COMBINATION METER CONTROL CIRCUIT CRUISE CONTROL CLUTCH SWITCH (ABOVE CLUTCH PEDAL) CRUISE CONTROL IND CRUISE CONTROL SWITCH (COMBINATION SWITCH) DRIVER'S SIDE J/B (BEHIND LOWER LEFT SIDE OF DASH) ED (ON LEFT SIDE OF ENGINE) EFI RELAY ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) ETCS FUSE EFI 1 FUSE FUSE GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START IGN FUSE IH (BEHIND RIGHT KICK PANEL) J/C 18 (ON LEFT SIDE OF ENGINE COMPT, UNDER ENGINE ROOM R/B) J/C 2 (ON LEFT SIDE OF ENGINE COMPT, UNDER ENGINE ROOM R/B) J/C 25 (ON LEFT SIDE OF ENGINE COMPT) J/C 26, 27 (BEHIND LEFT KICK PANEL) J/C 28, 29 (BEHIND UPPER RIGHT SIDE OF DASH, NEAR PASSENGER'S AIR BAG) J/C 4 (BEHIND LEFT KICK PANEL) J/C 9 (BEHIND UPPER LEFT SIDE OF DASH, NEAR INSTRUMENT CLUSTER) M- M+ M/T M/T A/T NCA WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RES+ SPEEDOMETER STOP FUSE THROTTLE CONTROL MOTOR (ON THROTTLE BODY) THROTTLE POSITION SENSOR (ON THROTTLE BODY ASSEMBLY) VC VTA W/ DOOR LOCK CONTROL WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE

1 2 3 8 9 22 28 26 23 29 27 +B 13 19 6 12 10 24 17 PI STP +BM 2 3 17 M- M+ ACTIVE CIRCUIT ANTI-LOCK BRAKES SYSTEM BATT MREL IGSW VPA EPA VCPA BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BRN WIRE CCS SPD COMBINATION METER CONTROL CIRCUIT CRUISE CONTROL SWITCH (COMBINATION SWITCH) CRUISE IND D POSITION SWITCH (PARK/NEUTRAL POSITION SWITCH) (ON TRANSMISSION) DRIVER'S SIDE J/B (BEHIND LOWER LEFT SIDE OF DASH) EB (ON RIGHT REAR OF ENGINE) EC (ON LEFT SIDE OF FIREWALL) EFI 1 FUSE EFI RELAY ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) ETCS FUSE FUSE GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START IE (BEHIND LEFT KICK PANEL) IGN FUSE IH (BEHIND RIGHT KICK PANEL) J/C 18 (UNDER ENGINE ROOM R/B) J/C 2 (UNDER ENGINE ROOM R/B) J/C 23, 24 (BEHIND LEFT END OF DASH) J/C 25 (ON LEFT SIDE OF ENGINE COMPT) J/C 26, 27 (BEHIND LEFT KICK PANEL) J/C 4 (BEHIND LEFT KICK PANEL) J/C 8 (BEHIND UPPER LEFT SIDE OF DASH, NEAR INSTRUMENT CLUSTER) LT GRN/RED WIRE PNK/BLU WIRE PNK/GRN WIRE RED WIRE RED/GRN WIRE SPEEDOMETER STOP FUSE STOPLIGHT SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) THROTTLE CONTROL MOTOR, POSITION SENSOR (ON THROTTLE BODY ASSEMBLY) VIO/RED WIRE W/ DOOR LOCK CONTROL W/O DOOR LOCK CONTROL WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE

1 2 3 4 5 6 7 8 9 10 WA BZ D/G 3.4L 4.7L AIRBAG AUTO LSD SWITCH (INTEGRATION CONTROL, PANEL) BACK-UP LIGHT SWITCH (M/T) (ON TRANSMISSION) BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRN/YEL WIRE CSW GYAW YAW DATA LINK CONNECTOR (DLC) 3 (BELOW LEFT SIDE OF DASH, NEAR CENTER CONSOLE) DIODE (A/T) (BEHIND UPPER LEFT SIDE OF DASH, NEAR INSTRUMENT CLUSTER) DRIVER SIDE J/B (BEHIND LOWER LEFT SIDE OF DASH) ECU-IG FUSE ENG ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) EXI VSCW BRL IND WT FUSE GAUGE FUSE GRN WIRE GRN/ WHT WIRE GRN/ YEL WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/GRN WIRE GYAW HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START INFR SPI J/C 10 (BEHIND UPPER LEFT SIDE OF DASH, NEAR INSTRUMENT CLUSTER) J/C 11 (BEHIND UPPER RIGHT SIDE OF DASH, NEAR PASSENGER'S AIRBAG) J/C 12 (BEHIND UPPER RIGHT SIDE OF DASH, NEAR PASSENGER'S J/C 5 (BEHIND UPPER LEFT SIDE OF DASH, NEAR INSTRUMENT CLUSTER) J/C 8 (BEHIND UPPER LEFT SIDE OF DASH, NEAR INSTRUMENT CLUSTER) LT GRN WIRE LT GRN/BLK WIRE NCA WIRE NEO ORG/ WIRE PARKING BRAKE SWITCH (M/T) PNK TRC+ WIRE PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RL+ RL- RR+ RR- ENG- SIL SKID CONTROL ECU (BEHIND CENTER OF DASH) STOP FUSE STOPLIGHT SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) STP TC TS PKB ENG+ TRANSMISSIONS SYSTEM TRC+ VIO/GRN WIRE VIO/RED WIRE VSC WARNING BUZZER (BEHIND CENTER OF DASH) VYS W/ KEYLESS ENTRY WHT GRN/ WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YAW RATE SENSOR (UNDER RIGHT FRONT SEAT) YEL WIRE YSS YD

1 2 3 4 5 6 7 8 9 10 WA BZ D/G A/T INDICATOR LIGHT SWITCH (PARK/NEUTRAL POSITION SWITCH) AUTO LSD SWITCH (INTEGRATION CONTROL, PANEL) BLK PNK/ WIRE BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CSW GYAW YAW DATA LINK CONNECTOR (DLC) 3 (BELOW LEFT SIDE OF DASH, NEAR CENTER CONSOLE) DRIVER SIDE J/B (BEHIND LOWER LEFT SIDE OF DASH) ECU-IG FUSE ENG ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) EXI VSCW BRL IND WT GAUGE FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GYAW HOT AT ALL TIMES HOT IN ON OR START INFR SPI IPO J/B 48 (BEHIND LEFT SIDE OF DASH) LT GRN WIRE LT GRN/RED WIRE NCA WIRE NEO ORG/ WIRE PARKING BRAKE SWITCH (BEHIND RIGHT SIDE OF DASH) PNK WIRE PNK/BLK WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RL+ RL- RR+ RR- ENG- SIL SKID CONTROL ECU (BEHIND CENTER OF DASH) STOP FUSE STOP LIGHT SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) STP TC TS PKB ENG+ SUB J/B 3 (BEHIND CENTER OF DASH) TRANSMISSIONS SYSTEM TRC+ VIO WIRE VIO/RED WIRE VSC WARNING BUZZER (BEHIND CENTER OF DASH) VYS WHT GRN/ WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YAW RATE SENSOR (UNDER RIGHT FRONT SEAT) YEL WIRE YSS YD

21 13 20 TC D/G TS 3.4L 4.7L A/B ABS ACTUATOR WITH ECU (IN RIGHT REAR CORNER OF ENGINE COMPT) BLK/YEL WIRE BLU/WHT WIRE BRN WIRE D/G DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH, NEAR CENTER CONSOLE) DRIVER'S SIDE J/B (BEHIND LOWER LEFT SIDE OF DASH) EC (4.7L) (ON LEFT SIDE OF FIREWALL) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) HOT AT ALL TIMES J/C 3 (BEHIND LEFT KICK PANEL) J/C 5 (BEHIND UPPER LEFT SIDE OF DASH, NEAR INSTRUMENT CLUSTER) OBD FUSE RED/BLU WIRE SIL SKID CONTROL ECU SRS WARNING LIGHT (COMBINATION METER) W/ VSC W/O VSC WFSE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE

& MOTOR (AT CENTER FRONT OF ROOF) 11 3 12 TC D/G TS A/B ABS ACTUATOR WITH ECU (IN RIGHT REAR CORNER OF ENGINE COMPT) BLK WIRE BLK/YEL WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN WIRE CENTER AIR BAG SENSOR ASSEMBLY (BEHIND LOWER CENTER OF DASH, ON TRANSMISSION TUNNEL) D/G DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH, NEAR CENTER CONSOLE) DOOR DRIVER DOOR ECU (IN DRIVER'S DRIVER SIDE J/B (UNDER LEFT END OF DASH) EC (ON LEFT SIDE OF FIREWALL) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) FRONT PASSENGER DOOR ECU (IN FRONT PASSENGER'S DOOR) GRN WIRE GRN/BLK WIRE HOT AT ALL TIMES DRIVER SIDE J/B (UNDER LEFT END OF DASH) OBD FUSE J/C 45 (BEHIND LEFT SIDE OF DASH) MOON ROOF CONTROL ECU PNK WIRE PNK/BLK WIRE RED WIRE RED/BLU WIRE SIL SKID CONTROL ECU (BEHIND CENTER OF DASH) SRS WARNING LIGHT (COMBINATION METER) SUB J/B 3 (BEHIND CENTER OF DASH) W/ MOON- ROOF W/ VSC W/O VSC WFSE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL/GRN WIRE

1 2 3 8 9 22 28 26 23 29 27 +B 13 19 6 12 10 24 17 PI STP +BM 2 3 17 M- M+ ACTIVE CIRCUIT ANTI-LOCK BRAKES SYSTEM BATT MREL IGSW VPA EPA VCPA BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CCS ON/OFF CCS SPD COMBINATION METER CONTROL CIRCUIT CRUISE CONTROL SWITCH (COMBINATION SWITCH) CRUISE IND D POSITION SWITCH (PARK/NEUTRAL POSITION SWITCH) (ON TRANSMISSION) DRIVER'S SIDE J/B (UNDER LEFT END OF DASH) DRIVER'S SIDE J/B GAUGE FUSE (UNDER LEFT END OF DASH) EB (ON RIGHT REAR OF ENGINE) EFI 1 FUSE EFI RELAY ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPT) ETCS FUSE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START IGN 1 FUSE IP (BEHIND CENTER IPO J/C 28, 29 (BEHIND CENTER OF DASH) J/C 34 (UNDER ENGINE ROOM R/B) J/C 35 (ON LEFT SIDE OF ENGINE COMPT) J/C 45 (BEHIND LEFT SIDE OF DASH) J/C 55 (BEHIND RIGHT SIDE OF DASH) J/C 55, 56 (BEHIND RIGHT SIDE OF DASH) LT GRN/RED WIRE OF DASH) PNK/BLU WIRE RED WIRE RED/BLU WIRE RED/YEL WIRE SHORT CONNECTOR (BEHIND LEFT SIDE OF DASH) SPEEDOMETER STOP FUSE SUB J/B 3 (BEHIND CENTER OF DASH) THROTTLE CONTROL MOTOR, POSITION SENSOR (ON THROTTLE BODY ASSEMBLY) WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE

1 2 33 31 32 HP 4.7L 4.7L 3.4L A/C FUSE A/C LOCK SENSOR A/C MAGNETIC CLUTCH, LOCK SENSOR (ON A/C COMPRESSOR, ON LEFT SIDE OF ENGINE) A/C THERMISTOR (3.4L) (BEHIND RIGHT SIDE OF DASH, IN HVAC HOUSING) A/C THERMISTOR (4.7L) (BEHIND RIGHT SIDE OF DASH, IN HVAC HOUSING) AC 2 ACID/ACT A/CS THE ACS AIND/ACT AIR INLET CONTROL SERVO MOTOR (UNDER RIGHT SIDE OF DASH, ON HVAC HOUSING) BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BLOWER MOTOR (UNDER RIGHT SIDE OF DASH, ON HVAC HOUSING) BLOWER SWITCH BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE DEFROSTER SWITCH DRIVER'S SIDE J/B (BEHIND LOWER LEFT SIDE OF DASH) EA ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) ENGINE COMPT) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE COOLANT TEMPERATURE SENSOR (ON RIGHT FRONT OF ENGINE) ENGINE ROOM R/B (ON LEFT SIDE OF HTR FUSE FRS GAUGE FUSE GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START HTR RELAY INTEGRATON CONTROL, PANEL J/C 18 3.4L (ON LEFT SIDE OF ENGINE COMPT, UNDER ENGINE ROOM R/B) J/C 25 (ON LEFT SIDE OF ENGINE COMPT) J/C 26, 27 (BEHIND LEFT KICK PANEL) J/C 9 (BEHIND UPPER LEFT SIDE OF DASH, NEAR INSTRUMENT CLUSTER) JUNCTION CONNECTOR 1 (ON LEFT SIDE OF ENGINE COMPT, UNDER ENGINE ROOM R/B) JUNCTION CONNECTOR 3 (BEHIND LEFT JUNCTION CONNECTOR 8 (BEHIND UPPER LEFT SIDE OF DASH, NEAR INSTRUMENT CLUSTER) KICK PANEL) IF LO HI OFF LO OFF MGC ORG/ WIRE REC RED WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE

1 2 33 31 32 HP ACMG ACLD A/CS THE 14 13 17 10 18 IG DEF A/C GND 8 7 12 21 9 REC FRS A/CS ACLD -S A/C A/C DUAL PRESSURE SWITCH (IN RIGHT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) A/C FUSE A/C LOCK SENSOR A/C THERMISTOR (BEHIND RIGHT SIDE OF DASH, IN HVAC HOUSING) AIR INLET CONTROL SERVO MOTOR (UNDER RIGHT SIDE OF DASH, ON HVAC HOUSING) BLK WIRE BLK/WHT WIRE BLOWER MOTOR (UNDER RIGHT SIDE OF DASH, ON HVAC HOUSING) BLOWER RESISTOR (BEHIND RIGHT SIDE OF DASH) BLOWER SWITCH BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE DEFROSTER SWITCH DRIVER SIDE J/B (UNDER LEFT END OF DASH) GAUGE FUSE ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPT) FRS FUSIBLE LINK BLOCK (ON LEFT SIDE OF ENGINE COMPT) GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/BLU WIRE HEATER FUSE HOT AT ALL TIMES HOT IN ON OR START HTR RELAY INTEGRATION CONTROL, PANEL J/C 30 (ON RIGHT FRONT OF ENGINE COMPT) J/C 35 (ON LEFT SIDE OF ENGINE COMPT) J/C 52, 53 (BEHIND CENTER OF DASH) J/C 58 (BEHIND RIGHT SIDE OF DASH) LCKI LO OFF HI LT GRN/BLK WIRE MAGNETIC CLUTCH OFF REC RED WIRE RED/BLU WIRE RED/YEL WIRE SUB J/B 3 (BEHIND CENTER OF DASH) SUB J/B 4 (BEHIND CENTER OF DASH) WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 B+ A/C SYSTEM A/T INDICATOR LIGHT SWITCH ACT MREL ANTI-LOCK BRAKE SYSTEM ANTI-LOCK BRAKE SYSTEM, CRUISE CONTROL SYSTEM BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE COMBINATION METER CONTROL UNIT) CRUISE CONTROL SYSTEM DATA LINK CONNECTOR 3 (LEFT SIDE OF DASH) DRIVER SIDE J/B DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) ENG- ENG+ ODLP OILW CCS ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) GAUGE FUSE GAUGE FUSE FUSE GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY WIRE HOT IN HOT IN RUN OR ACC HOT IN RUN OR START HOT IN RUN OR START IE (BEHIND LEFT KICK PANEL) IGN FUSE J/C 4 (BEHIND LEFT KICK PANEL) J/C 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 9 (BEHIND UPPER LEFT SIDE OF DASH) LT GRN WIRE LT GRN/BLK WIRE MALF. IND. LAMP NEO ST- O/D MAIN SWITCH (CENTER OF DASH) O/D OFF IND A/T OIL TEMP ODMS PNK NSW WIRE PNK TRC- TRC+ WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/YEL WIRE SIL STA +BM STA FUSE STP F/PS FC SUPPLEMENTAL RESTRAINTS SYSTEM TFN TRANSMISSION SYSTEM TRANSMISSION SYSTEM STARTING/CHARGING SYSTEM VEHICLE SPEED SENSOR (M/T) (ON TRANS) IG+ 3 2 SI SE VIO/GRN WIRE WFSE WFSE SIL IGSW BATT WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE