(B-14) connect to correction resistors on the injection pump to fine-tune fuel delivery based on pump manufacturing tolerances. Diagnostic Trouble Codes (DTC)
The Toyota 1KZ-TE is one of the most reliable turbo-diesel engines ever built. However, keeping it running perfectly in a swap, or troubleshooting an electrical fault in a Hilux, Surf, or Prado, requires a precise understanding of its Engine Control Unit (ECU) pinout.
If you manually adjusted the spill valve screw on top of the injection pump to get more power, you may have pushed it past the ECU’s threshold, triggering an automatic safety shutdown. 5. Summary Reference Table Voltage Type Destination BATT Constant Battery Power 12V DC (Always Hot) Battery / Fusible Link IGSW Ignition Switch Input 12V DC (Key On) Ignition Switch / Key Barrel +B / +B1 Switched ECU Power 12V DC (Key On) EFI Main Relay Output E1 Logic/Chassis Ground Engine Block / Chassis E2 Sensor Ground Return Sensor Ground Shielding SPV Spill Control Valve Pulsed Ground / High Amp Injection Pump Solenoid TCV Timing Control Valve Pulsed Ground Injection Pump Timing Valve VCC Sensor Reference Power 5V DC Output TPS / MAP Sensor PIM Turbo Boost Signal 1.0V - 4.5V Input MAP / Intake Pressure Sensor STA Starter Crank Signal 12V DC (Cranking Only) Starter Solenoid Circuit
These are the crank and revolution signals. Without these inputs (Pins 1kz ecu pinout
I can provide the specific wiring schematic or terminal pin location for your exact model.
Diagnostic test terminals (bridge TE1 to E1 to read blink codes). SP1 (Speed Sensor):
If you want, tell me the ECU part number or post a clear photo of the ECU connector(s) and connector labeling and I’ll produce a verified pin-to-wire mapping specific to that unit. (B-14) connect to correction resistors on the injection
If wires are reversed (e.g., matching NE+ to NE-), the engine will run roughly, smoke heavily, and display a timing error code. 3. Power Generation Circuit (M-REL)
A proper pinout diagram turns chaos into a systematic diagnostic procedure.
Receives the signal from the Turbo Pressure Sensor (Manifold Absolute Pressure). If you manually adjusted the spill valve screw
Because wire colors change between a 1994 Hilux Surf KZN130 and a 2002 Land Cruiser Prado KZN165, you must always verify pin positions by function rather than color. 1. Power Supply and Ground Circuit
The 1KZ ECU pinout diagram is shown below:
Without the correct pinout:
The 1KZ ECU pinout refers to the configuration of the ECU's connector pins, which connect to various sensors, actuators, and other engine components. The ECU pinout is essential for: