Code 2-2-3 (Idle Valve Signal)

Turn ignition off. Disconnect fuel system ECU connector and remove protective sleeve. Connect an ohmmeter between harness side of terminal No. 33 (Red/Black wire) and terminal No. 9 (Blue/Yellow wire). Reading should be approximately 8 ohms. If reading is not 8 ohms, check wiring and connectors. If wiring and connectors are okay, test idle valve. For idle valve testing, see SYSTEM/COMP TESTS article.