Test No. 2 - Check Engine Light Inoperative

NOTE: Before replacing ECM, use an ohmmeter and check resistance of each ECM controlled relay and solenoid coil. See ECM wiring diagram for coil terminal identification for solenoid(s) and relay(s) to be checked. Replace any relay or solenoid if the coil resistance measures less than 20 ohms.

Fig 1: Test No. 2 Schematic, Check Engine Light Inoperative

Courtesy of ISUZU MOTOR CO.

Fig 2: Test No. 2 Flow Chart, Check Engine Light Inoperative

Courtesy of ISUZU MOTOR CO.