Test No. 2 - Check Engine Light Inoperative

NOTE: Before replacing ECM, check resistance of ECM-controlled relay and solenoid coils. See appropriate wiring diagram in WIRING DIAGRAM article for coil terminal identification of solenoids and relays. Replace any solenoid or relay with less than 20 ohms resistance.

Fig 1: Airflow Sensor Connector Courtesy Isuzu Motor Co

Fig 2: Data Link Connector Courtesy Isuzu Motor Co

Fig 3: Test No. 2 - Diagnostic Flowchart Courtesy Isuzu Motor Co