LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Isuzu >> 1987 >> Impulse Base, Automatic, AW03-70 >> Repair and Diagnosis >> Engine Performance >> System >> I-TEC Control System >> Diagnosis & Testing >> Test 2 - Oxygen Sensor (Codes 13, 44 And 45) >> Circuit Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit Testing

  1. Unplug ECU connectors at ECU. Disconnect oxygen sensor lead at connector. Check for continuity and between ECU connector terminal No. 30 and oxygen sensor connector. If no continuity exists, repair or replace harness.
  2. If circuit is good, install a new oxygen sensor. Road test vehicle. Check if same trouble code is displayed.
scientia non olet · About LEMON Manuals