Because "89661" covers thousands of different ECUs spanning from the 1980s to the present day, A 89661 ECU from a 1994 Supra 2JZ-GTE looks and wires completely differently than a 89661 ECU from a 2005 Camry 2AZ-FE. 2. Common Connector Generations
| Suffix Example | Common Vehicle | Engine | Key Pinout Differences | | :--- | :--- | :--- | :--- | | | Toyota Land Cruiser (J100/J120) | 2UZ-FE (V8) | 4 Oxygen sensors, IMMO box communication, 5-speed auto | | -2J170 / 2J180 | Toyota Hilux / Fortuner (AN10/AN20) | 1GR-FE (V6) / 2KD-FTV | Mechanical throttle position sensor, diesel glow plug control | | -1A240 | Toyota Corolla (E120/E130) | 1ZZ-FE / 3ZZ-FE | VVT-i solenoid, knock sensor, 4-speed auto logic | | -0D040 | Toyota RAV4 (ACA2#) | 2AZ-FE | Electronic throttle (ETCS-i), LIN bus for alternator | | -0D100 | Toyota Camry (ACV30) | 2AZ-FE | Immobilizer coil driver built-in |
A signal wire that tells the ECU the ignition key has been turned to the "ON" position. 2. Ground Pins toyota 89661 ecu pinout
Ignition Trigger signal sent from the ECU to the igniter or coil-on-plug (COP) to fire the spark plug.
Typically features yellow or gray plastic connectors with 26-pin, 16-pin, and 22-pin configurations. Because "89661" covers thousands of different ECUs spanning
This is a common 2.7L engine ECU (2005-2016 Hiace/Tacoma). Actual pin locations may differ.
Despite variations, the core functions are consistent across all Toyota ECUs, making diagnostics easier. This is a common 2
This comprehensive guide covers how to decode your 89661 ECU, identify its generation, trace critical pin functions, and troubleshoot common wiring issues. 1. Decoding the Toyota 89661 Part Number
❗ These are – using the wrong pinout can destroy the ECU or wiring.
Before you look for a pinout, locate the full 10-12 digit number on the sticker attached to the metal casing of the ECU.
: Sensor ground loop (highly sensitive; do not ground these directly to the chassis).