. These ECUs are commonly found in diesel models like the Nissan Patrol (ZD30/TD28), Navara/Frontier (TD27/ZD30), and Terrano. Essential Pinout Overview (ZD30/TD27 Common Pins)
Standard OBDII (Pin 42) is available but often requires specialized Nissan diagnostic tools for deep-level data.
The Zexel ECU manages the Bosch VP44 fuel injection pump (manufactured under license by Zexel). It utilizes a high-pin-count connector to interface with various engine sensors and actuators to maintain optimal performance and emissions. Primary Pin Functions
A redundant potentiometer setup reading the gas pedal position. nissan zexel ecu pinout
Used in the Nissan Elgrand, Frontier, and Caravan.
Input from the Mass Air Flow sensor for air intake measurement. Crankshaft Position Input and ground for the Crankshaft Position (CKP) sensor. 18 Check Engine Light
: These ECUs are frequently sent for immobilizer (NATS) bypass services or EEPROM repair due to data corruption. The Zexel ECU manages the Bosch VP44 fuel
Sends an AC voltage or digital square wave signal to communicate engine RPM and piston position.
: It supports multiple injection strategies (pilot, main, and post-injection) to meet emissions standards and reduce engine noise and vibration.
This is a frequent issue on electronic Zexel diesel injection pumps (like the Bosch VP37 licensed variants). Inspect the pins on the ECU. Used in the Nissan Elgrand, Frontier, and Caravan
Dictates cold-start fueling enrichment and glow plug duration.
Zexel was originally a joint venture between Diesel Kiki and Bosch. In the 1990s and early 2000s, Nissan equipped its heavy-duty diesel engines with electronically controlled inline injection pumps (often called the "Zexel pump"). Unlike common rail systems, these pumps use a mechanical governor assisted by electronic trimming via the ECU.
Before checking data signals, ensure the module has stable power and ground connections. Pin Function Description Wire Color (Typical) Direct unswitched power from the battery for memory backup. Red or White/Red Ignition Switch (+12V)