LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 1995 >> Sentra Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests 1.6L >> Fuel System >> Fuel Injector System Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel Injector System Test

  1. With engine running, listen for clicking sound at each injector. If clicking sound is present at each injector, system is functioning properly. If clicking sound is not present, go to next step.
  2. Turn ignition off. Disconnect injector harness connector(s). Turn ignition on. Measure voltage between ground and injector harness connector Black/Red wires. Battery voltage should be present. If battery voltage is present, go to next step. If battery voltage is not present, check 30-amp fusible link and ignition switch. If fusible link and ignition switch are okay, repair or replace harness or connectors.
  3. Ensure ignition is off. Disconnect ECM harness connector. ECM is located under center of instrument panel. Check continuity between ECM harness connector terminals No. 102 (Red/Black wire), No. 104 (Green/Black wire), No. 107 (Yellow/Black wire), and No. 109 (Blue/Black wire) and corresponding fuel injector harness connector wire color. Continuity should exist.
  4. If continuity does not exist, repair or replace harness or connectors. If continuity exists, check fuel injector. See FUEL INJECTOR  . If fuel injector is okay, check ECM terminals, harness and connector terminals for damage or corrosion. Repair or replace as necessary.
scientia non olet · About LEMON Manuals