Toyota 89661 Ecu Pinout [patched] Jun 2026

The prefix 89661 is Toyota’s factory part number designator for an Engine Control Module (ECM) or Powertrain Control Module (PCM) . These are not generic parts; they are vehicle-specific. Over the past two decades, Toyota and their subsidiary Denso have produced hundreds of ECUs starting with 89661.

A pinout for a 89661-0D150 (2012 Camry 2.5L) is completely different from a 89661-33260 (2001 Tacoma 3.4L). You must match the full 10-digit part number . toyota 89661 ecu pinout

: While some pinouts are available on enthusiast forums, many users find that paying for professional guidance through verified platforms is often faster when dealing with specific, rare part numbers. The prefix 89661 is Toyota’s factory part number

| Suffix Example | Vehicle | Engine | |----------------|---------|--------| | 89661-0W590 | Toyota Camry 2007-2011 | 2AZ-FE (2.4L) | | 89661-33260 | Toyota Corolla 2005-2008 | 1ZZ-FE (1.8L) | | 89661-06A70 | Toyota Prius 2004-2009 | 1NZ-FXE (1.5L Hybrid) | | 89661-0P130 | Toyota RAV4 2006-2012 | 2AZ-FE | | 89661-30490 | Toyota Highlander 2008-2013 | 2GR-FE (3.5L V6) | A pinout for a 89661-0D150 (2012 Camry 2

: 5V reference power for sensors like the TPS or MAP.

| Pin | Typical Color | Function | Notes | | :--- | :--- | :--- | :--- | | | | BATT (E5-1) | White/Red (W-R) | Main ECU power (constant +12V) | Fused directly from battery | | +B (E5-2) | Black/Red (B-R) | Main relay power | Switched +12V via EFI relay | | E1, E2, E01 | Brown/White (Br-W) | Power grounds | Must have continuity to engine block | | Sensors | | VTA (E6-22) | Light Green/Black (Lg-B) | Throttle Position Sensor (TPS) signal | 0.5V idle / 4.5V WOT | | E2 (E6-14) | Brown (Br) | Sensor ground (TPS, MAP, etc.) | Do not connect to chassis ground | | THW (E5-7) | Yellow/Blue (Y-B) | Engine Coolant Temp (ECT) sensor | High voltage when cold | | G2, NE+ (E6-9/10) | Shielded cable | Crankshaft position sensor (CKP) | AC voltage, 200-500mV cranking | | Actuators | | #10, #20, #30 (C-connector) | Various | Fuel injector drivers | Ground-switched by ECU | | IGT1-4 (B-connector) | Various | Ignition timing signals to igniter | 5V square wave | | FC (E5-23) | Green/Red (G-R) | Circuit opening relay (fuel pump) | Ground to turn fuel pump ON | | Communication | | SIL (E5-20) | Violet/White (V-W) | Check engine light (MIL) control | Grounds to illuminate | | TC (E5-19) | Black (B) | Diagnostic port (TE1) | Jumper to E1 to flash codes | | CANH / CANL (E4-5/E4-6) | Twisted pair | OBD-II CAN bus | 60 ohms resistance between pins |