Toyota 89661 Ecu Pinout 【99% FULL】

Engine load signals. PIM stands for Pressure Intake Manifold (MAP sensor); VG stands for Voltage Generation (MAF sensor).

Note: Pin numbers are often stamped into the plastic behind the connector.

| Pin | Signal | Notes | |-----|----------------|-------| | B1 | +B (Main relay output) | Switched 12V to sensors | | B2 | +B2 (Injector power) | | | B3 | MREL (EFI main relay control) | ECU grounds to energize relay | | B4 | E01 (Power ground) | To engine block | | B5 | E02 (Power ground) | | | B6 | E03 | | | B7 | #10 (Injector 1) | ECU grounds injector | | B8 | #20 (Injector 2) | | | B9 | #30 (Injector 3) | | | B10 | #40 (Injector 4) | | | B11 | #50 (Injector 5 – V6) | | | B12 | #60 (Injector 6 – V6) | | | B13 | FC (Fuel pump control) | To fuel pump relay | | B14 | FPR (Fuel pressure regulator) | For returnless systems | | B15 | VSV (VVT oil control valve) | Variable valve timing solenoid | | B16 | EGR (EGR vacuum solenoid) | | | B17 | PRG (Purge VSV) | Evaporative emissions | | B18 | IAC1 (Idle air control – close) | | | B19 | IAC2 (IAC – open) | | | B20 | FAN (Cooling fan relay) | | | B21 | CEL (Check engine light) | To instrument cluster | | B22 | TC (Diagnostic test connector) | | toyota 89661 ecu pinout

If you cannot find a verified pinout schematic online for your exact part number suffix, open the ECU casing. In 90% of 89661 modules, Toyota printed abbreviations like +B, BATT, IGT, #10 directly on the circuit board right next to the pin solder pads.

Because "89661" covers so many different modules, use these steps to identify your exact wiring: Toyota 89661 ECU Pinout: Find 89661-50241 Pinouts Engine load signals

The number 89661 simply identifies the unit as an . The numbers after the dash (e.g., 89661- XXXXX ) denote the specific vehicle, engine, and region.

If you are reading this, you likely have a Bosch-style Toyota ECU (Engine Control Unit) with the coveted part number prefix sitting on your workbench. Or, you might be staring at a tangled mess of wires under your dashboard after an engine swap. Either way, finding an accurate Toyota 89661 ECU pinout is your key to success. | Pin | Signal | Notes | |-----|----------------|-------|

Toyota Engine Control Unit (ECU) Part Number 89661 Category: Automotive Electronics / Engine Management Status: Technical Reference Guide

89661-XXXXX Vehicle: Year, Model, Engine code (e.g., 2001 Toyota Corolla 1ZZ-FE) Transmission: Manual or Auto What you need: Pinout for testing / wiring repair / standalone conversion

4. Example Pinout Configuration: 2JZ-GTE (89661-30430 / Non-VVTi) To illustrate how these codes map out physically, Function Description Wire Color (Typical) Constant 12V Memory White-Blue +B Switched 12V EFI Relay Black-Yellow IGSW Ignition Switch 12V Black-Orange #10 - #60 Injectors 1 through 6 Various Stripes IGT1 - IGT6 Ignition Signals 1-6 Solid / Striped IGF Spark Confirmation Signal Yellow-Green NE+ / NE- Crank Position Signal Shielded Twist FC Fuel Pump Control Relay E1 Case Ground 5. Step-by-Step Guide to Bench Wiring a Toyota ECU

This guide breaks down how to decode Toyota 89661 part numbers, identify critical pins, map common engine wiring structures, and troubleshoot connection issues. Decoding the Toyota 89661 Part Number