Nissan Zexel Ecu Pinout [new] -

For more detailed model-specific wiring, you can find full PDF schematics on resources like Scribd or community-maintained databases like Eat Sleep BOOST . Nissan ECU Pinout Connection Guide | PDF - Scribd

These functions are typical but ; always verify with a proper pinout for your specific ECU.

: The ECU uses real-time data from sensors (like the oxygen, crankshaft, and temperature sensors) to adjust fuel quantity and injection timing. nissan zexel ecu pinout

| Pin | Wire Color | Signal Name | Description | Voltage/Spec | | :--- | :--- | :--- | :--- | :--- | | 1 | Lg (Light Green) | TPS Signal 1 | Throttle position sensor main (0-5V) | 0.45V idle / 4.5V WOT | | 2 | Lg/R (Lt Grn/Red) | TPS Signal 2 | Redundant TPS for safety check | Opposite slope of Pin 1 | | 3 | B (Black) | Sensor Ground | Ground for all analog sensors | 0V (chassis) | | 4 | W (White) | Pump TDC Sensor (G) | Top dead center reference for injection | 5V pulse (tooth signal) | | 5 | B/W (Black/White) | Boost Pressure Sensor Signal | Manifold absolute pressure (MAP) | 0.5V (vac) to 4.5V (20psi) | | 6 | Y (Yellow) | Engine Coolant Temp (ECT) | Variable resistance to ground | 2.5V cold / 0.5V hot | | 7 | N/C | Not Connected | – | – | | 8 | R (Red) | +5V Sensor Reference | Powers TPS, MAP, ECT | 5.0V ±0.1V | | 9 | B/P (Black/Pink) | Shield Ground | Drain wire for shielded cables | Chassis ground | | 10 | Or (Orange) | Crank Position Sensor (Ne) | Engine speed & timing | AC sine wave (0.5-5V running) | | 11 | G/B (Green/Black) | Vehicle Speed Sensor (VSS) | From speedometer head | 0-12V square wave | | 12 | Br (Brown) | Intake Air Temp (IAT) | In intake manifold | 2.5V cold / 0.5V hot | | 13 | N/C | Not Connected | – | – | | 14 | W/L (White/Blue) | Accelerator Pedal Full Switch | Idle validation switch | 12V at idle / 0V off idle | | 15 | Lg/B (Lt Grn/Black) | Neutral Position Switch (MT) | Manual trans neutral signal | 0V in neutral / 12V in gear | | 16 | P (Pink) | Clutch Switch Signal | For idle-up on clutch engagement | 12V at rest / 0V depressed | | 17 | Sb (Sky Blue) | Air Conditioner Request | A/C compressor on signal | 12V when A/C ON |

Fuel cut solenoid (E18 Pin 5 – Blue wire). Test: With key ON, check for 12V between E18 Pin 5 and chassis ground. If no voltage, trace back to the main relay (E18 Pin 1 – Black/White). If the main relay clicks but no 12V, replace the relay. If E18 Pin 5 has 12V but the engine won’t start, the solenoid itself is mechanically stuck. For more detailed model-specific wiring, you can find

Here are common signals found on Zexel ECU diesel applications to aid in probing and diagnostics:

Control sequences for exhaust gas recirculation, often modified during performance deletes. Practical Implementation | Pin | Wire Color | Signal Name

: When verifying pins, use a high-impedance multimeter to avoid damaging sensitive internal circuits. Measure ground pins for continuity to the chassis first before checking for reference voltages.