at the cut-off solenoid pin during cranking. Check sensor AC voltage. Blown main ignition feed or dropped Power Ground. Verify permanent and switched pins match battery voltage perfectly. Uncontrollable Revving / Hunting Corrupted signal on the Control Sleeve Feedback pins.
Solenoid-controlling pins, such as the Swirl Control Valve (Pin 54) or Exhaust Gas Control (Pin 11), that flick "on" and "off" thousands of times per second to meter vacuum or fluid pressure. ⚠️ Safe Diagnostic Practices
Wire the constant battery pin through a fuse, and wire the ignition pin to a switched ignition source.
Before testing any sensors, you must verify that the ECU is receiving stable electrical power.
| Pin | Wire Color | Signal Name | Function | Typical Voltage/Behavior | |------|------------|----------------|------------------------------------------|----------------------------| | 1 | Black/Yellow | EGR Solenoid | EGR control (ground switched) | 0V or 12V | | 2 | Red/Black | TPS Signal | Throttle position sensor (main) | 0.5V (idle) – 4.5V (WOT) | | 3 | Green/White | TPS Ground | Sensor ground reference | 0V | | 4 | Brown | Fuel Temp Sensor | In-pump fuel temperature | 2.5V @ 20°C | | 5 | Yellow/Red | Spill Valve (+) | Injection pump timing control | PWM ~90-200Hz | | 6 | Black | Spill Valve (-) | Return path for spill valve | PWM ground | | 7 | White | Vehicle Speed Sensor (VSS) | Speed signal from gearbox | AC sine wave or 5V square | | 8 | Blue/Red | Neutral Switch | Manual transmission neutral | 12V in gear, 0V in neutral | | 9 | Light Green | ACC Signal | Ignition switch accessory | 12V key ON | | 10 | Black/White | ECU Ground (Power) | Main ground for drivers | <0.1V drop |
Corrects fueling parameters for cold starts and prevents engine overheating.
Stable power and clean grounding are critical for Zexel ECUs. High current draws from the injection pump actuators require dedicated grounding paths to prevent electrical noise from disrupting sensor readings. Constant Battery Power (
Nissan Zexel Ecu Pinout Work Jun 2026
at the cut-off solenoid pin during cranking. Check sensor AC voltage. Blown main ignition feed or dropped Power Ground. Verify permanent and switched pins match battery voltage perfectly. Uncontrollable Revving / Hunting Corrupted signal on the Control Sleeve Feedback pins.
Solenoid-controlling pins, such as the Swirl Control Valve (Pin 54) or Exhaust Gas Control (Pin 11), that flick "on" and "off" thousands of times per second to meter vacuum or fluid pressure. ⚠️ Safe Diagnostic Practices nissan zexel ecu pinout work
Wire the constant battery pin through a fuse, and wire the ignition pin to a switched ignition source. at the cut-off solenoid pin during cranking
Before testing any sensors, you must verify that the ECU is receiving stable electrical power. Verify permanent and switched pins match battery voltage
| Pin | Wire Color | Signal Name | Function | Typical Voltage/Behavior | |------|------------|----------------|------------------------------------------|----------------------------| | 1 | Black/Yellow | EGR Solenoid | EGR control (ground switched) | 0V or 12V | | 2 | Red/Black | TPS Signal | Throttle position sensor (main) | 0.5V (idle) – 4.5V (WOT) | | 3 | Green/White | TPS Ground | Sensor ground reference | 0V | | 4 | Brown | Fuel Temp Sensor | In-pump fuel temperature | 2.5V @ 20°C | | 5 | Yellow/Red | Spill Valve (+) | Injection pump timing control | PWM ~90-200Hz | | 6 | Black | Spill Valve (-) | Return path for spill valve | PWM ground | | 7 | White | Vehicle Speed Sensor (VSS) | Speed signal from gearbox | AC sine wave or 5V square | | 8 | Blue/Red | Neutral Switch | Manual transmission neutral | 12V in gear, 0V in neutral | | 9 | Light Green | ACC Signal | Ignition switch accessory | 12V key ON | | 10 | Black/White | ECU Ground (Power) | Main ground for drivers | <0.1V drop |
Corrects fueling parameters for cold starts and prevents engine overheating.
Stable power and clean grounding are critical for Zexel ECUs. High current draws from the injection pump actuators require dedicated grounding paths to prevent electrical noise from disrupting sensor readings. Constant Battery Power (