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The ECU uses these signals to calculate the precise timing and volume for fuel delivery. NE+ / NE- (Engine Speed):
Feed constant 12V to BATT . Wire your ignition switch to trigger a standard 4-pin relay that feeds 12V out to +B , +B1 , and the positive side of the Spill Valve. Feed 12V from the switch to IGSW .
What is the printed on your ECU sticker (e.g., 89661-3D240)? 1kz ecu pinout
Main ground wires. E01 and E02 are heavy-duty grounds for high-current drivers like the spill control valve. They must tie directly to the engine block. 2. Electronic Fuel Injection Controls
Understanding the pinout is vital for diagnosing problems, especially those related to the ECU itself.
Accelerator pedal position and idle switch signals. Control Outputs: This public link is valid for 7 days
| Version | Vehicle Examples | Key Features | |--------|----------------|--------------| | (pre-1996) | Hilux Surf, early Hiace, some Prado | 3-plug ECU, basic diagnostics, 2-row main connector | | Late (1996-2002+) | Prado 90/95, later Hiace, Granvia | 4-plug ECU, OBD-II support (JDM or Euro), immobilizer in some markets |
Engine speed (RPM) sensor signals generated from the pickup coil inside the injection pump.
Controls the fuel quantity injected into the cylinders. TCV (Timer Control Valve): Adjusts injection timing. S-REL: Glow plug relay control. W: Check Engine Light (MIL) output. Variations Between Models Can’t copy the link right now
Engine speed (RPM) sensor signals located inside the injection pump. Essential for calculating injection volume. Sensors & Inputs
Because wiring colors can vary by year (e.g., 1993 vs. 1999) and model (Hilux vs. Prado), it is crucial to consult specific manuals.
Toyota updated the 1KZ-TE engine management system across different vehicle models like the Hilux, Surf, Land Cruiser Prado, and HiAce.