Toyota 89661 Ecu Pinout [repack] -

Engine load inputs. PIM is used for Manifold Absolute Pressure (MAP) sensors, while VG (V-Grounded) denotes Mass Air Flow (MAF) signals. VTA / VTA1: Throttle Position Sensor (TPS) signal. THW: Coolant Temperature Sensor input (Thermistor Water). THA: Intake Air Temperature Sensor input (Thermistor Air).

This is a technical request regarding the series ECU (Engine Control Unit). The number 89661 is Toyota’s part number prefix for engine ECUs, but it is not a single pinout . It covers hundreds of different models (Camry, Corolla, Land Cruiser, Lexus, etc.) across OBD-I, OBD-II, JDM, and USDM variants. toyota 89661 ecu pinout

Power grounds specifically dedicated to high-current driver circuits inside the ECU (like fuel injectors). 2. Ignition Control Pins (IG Systems) Engine load inputs

: Constant +12V power from the battery (keeps ECU memory/fault codes alive). IGSW : Ignition switch signal that tells the ECU to wake up. THW: Coolant Temperature Sensor input (Thermistor Water)

End your research here if you already have your exact 10-digit number. If you are troubleshooting a specific swap project, I can help you narrow down the exact diagram. Please let me know:

Carefully lift the cover to expose the printed circuit board (PCB). Look directly behind the external pins on the board.

Always verify the full 10- or 12-digit part number on your ECU’s label before referencing any pinout.