1kz Ecu Pinout [ Reliable » ]

| Pin | Signal | Description | |-----|--------|--------------| | C1 | SL1 | Lock-up solenoid | | C2 | SL2 | Shift solenoid 2 | | C3 | SL3 | Shift solenoid 3 | | C4 | SL4 | Accumulator / line pressure solenoid | | C5 | OD1 | Overdrive switch input | | C6 | OD2 | Overdrive indicator light | | C7 | L1 | L position switch | | C8 | L2 | 2 position switch | | C9 | L3 | 3 position switch | | C10 | L4 | N position switch | | C11 | L5 | R position switch | | C12 | NCO | Transmission fluid temp sensor signal | | C13 | ECT | ECT ground | | C14 | +B | Shift solenoid power | | C15 | SLN | Linear solenoid (throttle pressure) | | C16–22 | — | Various grounds + unused |

| Pin | Wire Color | Function | Electrical Spec | |------|-------------|-------------------------------|------------------| | A1 | White/Red | Battery +12V (constant) | 11-14V | | A2 | White/Black | Main relay (IG SW) | 11-14V when ignition ON | | A3 | Black/White | ECU Ground (power ground) | <0.5 ohms to battery negative | | A4 | Black | Sensor ground (analog) | 0V reference | | A10 | Yellow/Black | Injection pump – timing control valve | 0-12V (PWM signal) | | A11 | Blue/Red | Injection pump – spill valve | 0-8V (PWM) | | A14 | Red/Black | Stop solenoid (fuel cut) | 12V when running; 0V off | | A20 | Green/White | Glow plug relay control | 12V during pre-heat | | A24 | Black/Orange | Engine control relay (ECU main) | 12V ignition ON |

The Toyota 1KZ-TE is one of the most beloved diesel engines ever produced. Found in legendary vehicles like the Land Cruiser Prado (KZJ70, KZJ90), Hilux Surf, and Hiace van, this 3.0-liter turbo-diesel is known for its reliability—until an electrical gremlin appears. 1kz ecu pinout

Check Engine Light (Malfunction Indicator Lamp / MIL) output to instrument cluster.

: An ECU from an automatic transmission vehicle (A/T) will have pins for the Electronic Controlled Transmission (ECT). Running this ECU in a manual vehicle (M/T) may store fault codes and affect drivability. Conversely, an M/T ECU in an A/T vehicle will fail to control the gearbox correctly. : An ECU from an automatic transmission vehicle

The SPV (Spill Control Valve) and TCV (Timing Control Valve) are critical for diesel delivery and timing.

: Most ECUs from the Hilux Surf (KZN185) and later Hilux (KZN165) use a 26-pin, 16-pin, and 22-pin connector configuration. This is the most common layout found in online wiring diagrams and service manuals. The SPV (Spill Control Valve) and TCV (Timing

Measure the voltage at the SPV valve. You should see 12V when the ignition is turned on.

Factory intercooler sensors, electronic throttle bodies (drive-by-wire components mixed with cable control), and advanced electronic spill control. Critical 1KZ-TE ECU Pin Classifications