1kz Ecu Pinout

Top Dead Center signal used for injection timing. THW: Coolant temperature sensor signal. PIM: Turbo pressure (Intake Manifold Pressure) signal.

Ensure the SPV valve on top of the pump receives clean +12V feed from the EFI relay, and the return ground side goes directly to the dedicated SPV pin on the ECU box. 5. Troubleshooting Common Wiring and ECU Faults

Note: Always verify orientation by looking at the wire side of the plug rather than the ECU header pins, and cross-reference your specific ECU part number (e.g., 89661-xxxxx) before pinning. Plug A (26-Pin Control & Sensors) Function Description Turbo Boost Pressure Sensor Signal THW Engine Coolant Temperature Input THA Intake Air Temperature Input VTA Throttle Position Sensor (TPS) Signal NE+ Injection Pump Engine Speed (+) NE- Injection Pump Engine Speed (-) G2 / TDC Crankshaft Position Sensor Input E2 Sensor Ground Loop Plug B (16-Pin Power & Actuators) Function Description +B +12V Switched Power (From EFI Relay) +B1 +12V Switched Power Backup IGSW Ignition Switch "On" Signal BATT +12V Constant Battery Power SPV Spill Control Valve Driver TCV Timing Control Valve Driver E01 Power Ground 1 E02 Power Ground 2 Plug C (22-Pin Body Control & Dash) Function Description STA Starter Motor Crank Signal W Check Engine Light (MIL) Output TC Diagnostic OBD1/OBD2 Code Trigger SPD Speedometer Pulse Input ACT Air Conditioning Amplifier Request G-IND Glow Plug Indicator Light Driver 4. How to Wire a 1KZ-TE Swap (Standalone Wiring) 1kz ecu pinout

Switched 12V power coming from the EFI Main Relay.

TE1 , W (Check Engine Light), and STA (Starter Signal). Resources for Detailed Diagrams Top Dead Center signal used for injection timing

The official Toyota 1KZ-TE Engine Repair Manual (RM710E) is the most authoritative source for full electrical schematics. You can often find PDF previews or community guides on platforms like Pinterest or Scribd .

The SPV is the most critical component on the 1KZ-TE injection pump. The ECU controls fuel volume by switching the ground side of the SPV circuit rapidly. Ensure the SPV valve on top of the

Uses a traditional mechanical cable linked to a Throttle Position Sensor (TPS).

Note: Wire colors can vary slightly depending on whether the donor vehicle is a Surf, Prado, or Hilux. Always cross-reference with a digital multimeter. Plug 1: Engine Control & Injection Pump (26-Pin)

On later 1KZ-TE (1996+, especially KZJ95), Pins C9 and C11 work together. If swapping this engine into an older vehicle, you must bypass or delete the immobilizer or provide the correct transponder signal.

: Spill Control Valve; the most critical output, as it controls the actual fuel injection volume. TCV (C-12)