The 1KZ-TE utilizes an electronic diesel control system (often referred to as EDC or simply the ECU). Unlike its predecessor, the 1KZ-T (mechanical), the 1KZ-TE uses an electronic injection pump, turbocharger control, and various sensors to manage fueling and boost efficiently.
If your vehicle does not have an OBD2 port (common on pre-2000 JDM models), you can read fault codes manually using the pins.
Controls the amount of fuel injected into the cylinders. This is a high-priority signal for engine starting and idling. TCV (Timing Control Valve): 1kz ecu pinout
Signal from the crankshaft/pump position sensor for RPM detection. TDC+ / TDC- (Top Dead Center): Signal to identify the piston position for timing. THW (Water Temp): Signal from the engine coolant temperature sensor. THA (Intake Air Temp): Signal from the air temperature sensor. PIM (Pressure Intake Manifold): Turbo boost pressure signal. VA / VC / IDL (Throttle Position):
| Pin | Name | Description | Wire Color (Typical) | | :--- | :--- | :--- | :--- | | 1 | IGSW | Ignition Power | Black/White | | 3 | E01 | Engine Ground | Brown | | 5 | #10 | Injector 1 | Red | | 6 | #20 | Injector 2 | White | | 7 | #30 | Injector 3 | Green | | 8 | #40 | Injector 4 | Blue | | 9 | E1 | Sensor Ground | Brown | | 10 | +B | Battery Power | Black/Orange | | 12 | STA | Starter Signal | Black/White | The 1KZ-TE utilizes an electronic diesel control system
Engine cranks but will not start, or starts and instantly dies (frequently accompanied by Code 14).
Replacing the factory ECU with a programmable unit (like MaxxECU or Link) to enhance performance and manage boost. Controls the amount of fuel injected into the cylinders
| Terminal | Wire Color | Signal | Description | | :--- | :--- | :--- | :--- | | C1 | W-B (White-Black) | E01 | Injector Driver Ground | | C2 | B (Black) | E02 | Injector Driver Ground | | C3 | Y-R (Yellow-Red) | SPD | Vehicle Speed Sensor | | C4 | L-Y (Blue-Yellow) | STP | Stop Light Switch | | C5 | B-O (Black-Orange) | NSW | Neutral Start Switch | | C6 | G-W (Green-White) | TC | Diagnostic Check Connector | | C7 | R-W (Red-White) | W | Check Engine Light | | C8 | V (Violet) | +BM | Backup Power (Memory) |
pin triggers the EFI main relay to power the ECU once the ignition is turned The Spill Control Valve (SPV):
The NE sensor (pump speed) and G sensor (pump timing) are crucial. These must be shielded wires to prevent interference. PIM (Pressure Sensor): Measures boost pressure.