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Monitored item [Unit] ECM signals Main signals Description Remarks INT/V TIM SOL q I The control condition of the intake COOLING FAN q I Indicates the control condition of the Voltage [V] I Voltage measured by the voltage Frequency I Pulse width, frequency or duty cycle I Only “#” is displayed if item is unable I Figures with “#”s are temporary ones. NOTE: I Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. ACTIVE TEST MODE NMEC0034S07 TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY) FUEL INJECTION I Engine: Return to the original I Change the amount of fuel injec- If trouble symptom disappears, see I Harness and connector I Fuel injectors I Front heated oxygen sensor IGNITION TIMING I Engine: Return to the original I Timing light: Set I Retard the ignition timing using If trouble symptom disappears, see I Adjust initial ignition timing IACV-AAC/V I Engine: After warming up, idle I Change the IACV-AAC valve Engine speed changes according I Harness and connector I IACV-AAC valve POWER BAL- I Engine: After warming up, idle I A/C switch “OFF” I Shift lever “N” I Cut off each injector signal one Engine runs rough or dies. I Harness and connector I Compression I Injectors I Power transistor I Spark plugs I Ignition coils COOLING FAN I Ignition switch: ON I Turn the cooling fan “HIGH”, Cooling fan moves and stops. I Harness and connector I Cooling fan motor I Cooling fan relay ENG COOLANT I Engine: Return to the original I Change the engine coolant tem- If trouble symptom disappears, see I Harness and connector I Engine coolant temperature sen- I Fuel injectors GI MA EM LC FE CL MT AT PD AX SU BR ST RS BT HA SC EL IDX ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION CONSULT-II (Cont’d) EC-43 |