The IS300 was brought into the mainstream in 1998 and the phenomenon known has “Altezza lights” were born. Sprung from the Japanese nameplate of Altezza, the IS300 brought the non turbo 2JZ into the luxury line of Lexus. Many people opt for the standard 2JZGTE engine swap, while others retain the W55 transmission and simply turbocharge the 2JZGE.
While the Altezza light craze has died down thankfully, these cars and motors are still in abundance. Perfect for the luxury sports coupe enthusiast, the IS300 ECU Pinout is what you need for piggyback computer like an Super AFC install or gauges.
If you are looking to install some aftermarket gauges or you need a sensor output from your ECU, this Lexus IS300 ECU Pinout will get you through it. Our Lexus IS300 ECU Pinout will let you get the install done quickly and without error, please leave us a message below if you have any specific requests for information.
Connector/Pin # | Signal | Full name/Destination | Wire Color |
A1 | EOM | Chassis Ground | White/Black |
A2 | EC | Chassis Ground | White/Black |
A3 | Not Used | ||
A4 | BATT | EFI Relay Battery Power | Black/Yellow |
A5 | B2 | EFI Relay Power | Black/Red |
A6 | B | EFI Relay Power | Black/Red |
A7 | BM | ETCS Power | Blue/White |
A8 | ST1- | Stop Switch | Black/Blue |
A9 | Not Used | ||
A10 | Not Used | ||
A11 | KSW | To Unlock Warning | Black/Yellow |
A12 | STA | From Park Position Switch | Black |
A13 | MREL | Main relay turn on | Black/Orange |
A14 | FC | Circuit Opening Relay (Roll) | Green/Yellow |
A15 | FPR | Fuel Pump relay | Green/Red |
A16 | ACMG | From A/C Compressor Relay | Blue/White |
A17 | IGSW | Switched Ignition | Black/Orange |
A18 | TAM | A/C Ambient Temp Sensor | Light Green/Red |
A19 | Not Used | ||
A20 | F/PS | From Center Airbag Sensor Assy | Blue |
A21 | Not Used | ||
A22 | Not Used | ||
A23 | Not Used | ||
A24 | Not Used | ||
A25 | PRE | A/C Dual Pressure Switch | Blue/Yellow |
A26 | SIL | OBD Data Feed | White |
A27 | Not Used | ||
A28 | Not Used | ||
A29 | Not Used | ||
A30 | IMLD | Security Indicator Lamp | Blue/Black |
A31 | CODE | To Immobilizer | Green/Black |
B1 | Not Used | ||
B2 | W | Mil Lamp Indicator | Red/Blue |
B3 | TC | To DLC3 Connector | Red/White |
B4 | STP | From Stop Switch | Green/White |
B5 | SFTD | E-Shift Down | Grey/Red |
B6 | SFTU | E-Shift up | Grey/Green |
B7 | HT1B | Bank1, Sensor2, Heater | Green/Black |
B8 | HT2B | Bank2 Sensor2, Heater | Red/White |
B9 | NEO | To Vehicle Skid Control | Green |
B10 | TBP | Pressure Switching Valve VSV | Pink |
B11 | SPD | To Combination Meter | White/Blue |
B12 | 2 | A/T Indicator | Yellow/Green |
B13 | CLSW | Cruise Control Clutch Switch | Yellow/Red |
B14 | 4 | To Shift Lock ECU | Light Green/Black |
B15 | L | Trans Control switch | Green/Yellow |
B16 | TACH | Tach to Meter | Black |
B17 | OX2B | Bank2 Sensor2, O2 Signal | White |
B18 | TRC+ | From Vehicle Skid Control | Red/Yellow |
B19 | ENG+ | To Vehicle Skid Control | Blue/Black |
B20 | MPX2 | Multiplex Communications | Orange |
B21 | MPX1 | Multiplex Communications | Blue |
B22 | WFSE | OBD Data Feed | Light Green |
B23 | TXCT | To Immobilizer | Pink/Black |
B24 | RXCK | To Immobilizer | Violet |
B25 | PTNK | Vapor Pressure Sensor | Blue/White |
B26 | Not Used | ||
B27 | Not Used | ||
B28 | OX1B | Bank1, Sensor2, O2 Signal | White |
B29 | TRC- | From Vehicle Skid Control | White/Green |
B30 | ENG- | To Vehicle Skid Control | Pink |
B31 | CCS | Cruise Control Switch | Blue/Red |
B32 | VPA2 | Sub TPS, Idle input | Blue/White |
B33 | VPA | Sub-TPS Input | Pink/Blue |
B34 | E2 | Sensor Ground | Brown |
B35 | VC | 5V Reference | Blue/Yellow |
C1 | E02 | Chassis Ground | White/Black |
C2 | E01 | Chassis Ground | White/Black |
C3 | ME01 | Chassis Ground | Brown |
C4 | Not Used | ||
C5 | Not Used | ||
C6 | Not Used | ||
C7 | IGF | Ignitor Fault Detection | Black/Blue |
C8 | Not Used | ||
C9 | Not Used | ||
C10 | Not Used | ||
C11 | Not Used | ||
C12 | Not Used | ||
C13 | IGT | Ignitor 1 | Grey/Black |
C14 | Not Used | ||
C15 | #60 | Injector No. 6 | Black/White |
C16 | #40 | Injector No. 4 | Red/White |
C17 | #20 | Injector No. 2 | Blue |
C18 | Not Used | ||
C19 | Not Used | ||
C20 | Not Used | ||
C21 | ACIS | ACIS VSV | Yellow/Green |
C22 | CCV | Canister Closed Valve | Yellow/Red |
C23 | PSP | Power Steering Oil Press. Sensor | Violet |
C24 | THW | Engine Coolant temp | Red |
C25 | Not Used | ||
C26 | EVG | MAF Ground | Blue/White |
C27 | VG | MAF Input | Green/Black |
C28 | OX2A | Bank2,Sensor1, O2 Signal | Black |
C29 | Not Used | ||
C30 | HT2A | Bank2,Sensor1, Heater | Pink |
C31 | Not Used | ||
C32 | THA | MAF Temp Input | Blue/Black |
D1 | KNK1 | Knock Sensor #1 | Black |
D2 | KNK2 | Knock Sensor #2 | White |
D3 | N | A/T Indicator | Green/Red |
D4 | 3 | A/T Indicator | Green/White |
D5 | R | A/T Indicator | Red/Black |
D6 | P | A/T Indicator | Green |
D7 | E1 | Chassis Ground | Brown |
D8 | Not Used | ||
D9 | HT1A | Bank1, Sensor 1, Heater | Light Green |
D10 | SLU- | A/T Controls | Light Green/Black |
D11 | SLU+ | A/T Controls | Green/White |
D12 | SLN- | A/T Controls | Red/White |
D13 | SLN+ | A/T Controls | Yellow/Red |
D14 | MOL | Engine Oil Level Sensor | White/Red |
D15 | RL | Alternator Status | Blue/Red |
D16 | S4 | A/T controls | Black/Red |
D17 | S3 | A/T Controls | White/Blue |
D18 | S2 | A/T Controls | Green/Yellow |
D19 | S1 | A/T Controls | Yellow |
D20 | NCO- | O/D Clutch Ground | Green |
D21 | NCO+ | O/D Clutch Speed Sensor | Red |
D22 | SP2- | VSS For A/T Ground | Red/Blue |
D23 | SP2+ | VSS For A/T | Blue/Yellow |
D24 | Not Used | ||
D25 | Not Used | ||
D26 | Not Used | ||
D27 | OIL | A/T Controls | Grey |
D28 | OX1A | Bank1, Sensor 1, O2 Signal | White |
D29 | Not Used | ||
D30 | Not Used | ||
D31 | Not Used | ||
D32 | Not Used | ||
D33 | Not Used | ||
D34 | SLT- | A/T Controls | Red/Black |
D35 | SLT+ | A/T Controls | Black/Yellow |
E1 | GEO1 | Shield for Throttle Control Motor | Black |
E2 | M- | Throttle Control Motor | Red |
E3 | M+ | Throttle Control Motor | White |
E4 | E03 | Chassis Ground | Brown |
E5 | OCV- | VVTI Control Signal Return | Yellow/Black |
E6 | OCV+ | VVTI Control Signal | Red/Yellow |
E7 | MOPS | Engine Oil Pressure Switch | Grey |
E8 | FAN | No1. and No2. Fans | Blue/Black |
E9 | CL- | Throttle Control Motor | Yellow |
E10 | CL+ | Throttle Control Motor | Red/White |
E11 | PRG | Cannister Purge | White/Green |
E12 | Not Used | ||
E13 | #50 | Injector No. 5 | Blue/Red |
E14 | #30 | Injector No. 3 | Violet |
E15 | #10 | Injector No. 1 | Red |
E16 | Not Used | ||
E17 | Not Used | ||
E18 | Not Used | ||
E19 | Not Used | ||
E20 | Not Used | ||
E21 | Not Used | ||
E22 | Not Used | ||
E23 | Not Used | ||
E24 | VTA2 | TPS, Idle input | Green/Yellow |
E25 | VTA | TPS Input | White/Red |
E26 | IGT3 | Ignitor 3 | Black/Yellow |
E27 | IGT2 | Ignitor 2 | Black/Red |
E28 | Not Used | ||
E29 | G2 | Camshaft Position Sensor | Green |
E30 | Not Used | ||
E31 | NE | Crankshaft Position Sensor | Black/White |
E32 | NE- | Ground for Cam/Crank sensors | Blue |
E33 | Not Used | ||
E34 | LCK1 | A/C Clutch Lock Sensor | White/Blue |
This does it for our Lexus IS300 ECU Pinout so far, we are always looking to build on what we’ve got, so if you have a request or need a pin in particular let us know.