1kz Ecu Pinout Jun 2026

Often feature a updated plug style or a 4-plug configuration to accommodate additional sensors like the Intercooler Temperature Sensor and digital dashboard communications. 2. 1KZ-TE ECU Pinout Configurations

Toyota changed wire colors slightly by model:

On OBD1 vehicles (most 1KZ engines), you can read Check Engine Light (CEL) codes by bridging two pins in the diagnostics box or at the ECU.

The 1KZ-TE ECU depends on several critical signals to manage fuel injection timing and volume. Key terminals found across common variants include: Power & Ground BATT (A-2) : Always hot (9–14V) to maintain ECU memory. +B / +BF (A-7, A-1) 1kz ecu pinout

If the terminal is triggered, common codes include: Code 13 : No Crankshaft Position Sensor signal. Code 14 / 15 : Igniter circuit malfunctions (IGT). Code 42 : Vehicle Speed Sensor (SP1) signal issue.

Count the flashes of the on your dash to determine your error codes (e.g., Code 14 for timing control, Code 15 for spill control valve).

| Model | Stop Solenoid (A14) | TPS Signal (B4) | Crank Sensor (B1) | |-------------------|-------------------|-------------------|---------------------| | KZJ70 Prado | Red/Black | Yellow/Green | Red/Blue | | KZJ90 Prado | Red/White | Yellow/Black | Blue/Black | | Hilux Surf | Red/Black | Green/Yellow | Red/Blue | | Hiace (Van) | Black/Yellow | Yellow/Green | Light Green/Black | Often feature a updated plug style or a

Constant 12V power used to maintain the ECU’s memory and fault codes.

The following pinout is based on a common 1KZ-TE ECU (often used in early to mid-90s models). 1: BATT (Battery +) 2: IGN (Ignition Switch) 3: M-REL (Main Relay) 5: E01 (Ground) 6: E02 (Ground) 10: SPV (Spill Valve +) 11: SPV (Spill Valve -) 14: T-TIM (Timing Solenoid) 15: E01 (Ground) 16: E02 (Ground) 23: +B (ECU Power) 25: FPU (Fuel Pressure Up - if applicable ) Plug B (16 Pins) 1: NE+ (Engine Speed Sensor +) 2: NE- (Engine Speed Sensor -) 3: G+ (Cam Position Sensor +) 4: G- (Cam Position Sensor -) 5: THW (Water Temp Sensor) 6: THA (Intake Air Temp Sensor) 7: THO (Fuel Temp Sensor) 9: PIM (Boost Pressure Sensor) 10: VC (5V Sensor Power) 11: E2 (Sensor Ground) Plug C (22 Pins) 1: EGR1 (EGR Valve) 2: EGR2 (EGR Valve) 3: STP (Stop Light Switch) 4: NSW (Neutral Start Switch) 5: A/C (A/C Clutch) 7: W (Check Engine Light) 8: TC (Diagnostic Link) 9: TE1 (Diagnostic Link) 10: TE2 (Diagnostic Link) 11: OD1 (Overdrive Switch) 13: IDL (Throttle Position Sensor Idle) 14: VTA (Throttle Position Sensor) 15: E2 (Sensor Ground) 16: VC (5V Sensor Power) 18: ALT (Alternator L terminal) Plug D (16 Pins) 1: GLW1 (Glow Plug Relay) 2: GLW2 (Glow Plug Indicator) 3: AC1 (A/C Control) 8: TSO (Turbo Solenoid) 10: TIS (Turbo Intake Sensor) 3. Critical 1KZ-TE Sensor and Actuator Functions

(Note: These 34-pin configurations are often further categorized into three 34-pin connectors based on the specific generation of the 1KZ-TE.) B. Connector 2 (22 Pins) Injector 1 (Spill Control Valve +) E11-2: Injector 1 (Spill Control Valve -) E11-3: Injector 2 (Spill Control Valve +) E11-4: Injector 2 (Spill Control Valve -) The 1KZ-TE ECU depends on several critical signals

: This is the "Electronic" version. While it is often described as "old school," its engine management system is relatively sophisticated. It features an electronic injection pump controlled by the ECU via a Spill Control Valve (SPV) and various sensors. The "E" makes all the difference. This version requires a fully intact engine harness, a functioning ECU, and a correct wiring configuration to run. Most of the pinout discussions revolve around this specific variant.

Timing Control Valve (Regulates injection timing advancement) Black / White E1 Engine Ground A26 BATT Constant +12V Battery Power (For ECU memory) White / Red