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DIAGNOSIS SYSTEM (ECM) EC-669 < SYSTEM DESCRIPTION > [MR EXCEPT FOR NISMO RS MODELS] C D E F G H I J K L M A EC N P O *: The items are the same as those of 1st trip freeze frame data. DATA MONITOR MODE NOTE: • The following table includes information (items) inapplicable to this vehicle. For information (items) applica- ble to this vehicle, refer to CONSULT display items. • For reference values of the following items, refer to Monitored Item ×: Applicable FUEL SYS-B1 • “Fuel injection system status” at the moment a malfunction is detected is displayed. Mode2: Open loop due to detected system malfunction FUEL SYS-B2 COMBUST CONDI- These items are displayed but are not applicable to this model. FUEL RAIL PRES- • The fuel rail pressure at the moment a malfunction is detected is displayed. TARGET FUEL RAIL • The target fuel rail pressure at the moment a malfunction is detected is displayed. BATTERY VOLTAGE • The battery voltage at the moment a malfunction is detected is displayed. FUEL LEVEL [%] • The fuel level at the moment a malfunction is detected is displayed. Freeze frame data item* Description Monitored item Unit Description Remarks ENG SPEED rpm Indicates the engine speed computed from the sig- • Accuracy becomes poor if engine speed drops below the idle rpm. • If the signal is interrupted while the engine is running, an abnormal value MASS AIR FLOW Hz The signal frequency of the mass air flow sensor is B/FUEL SCHDL msec “Base fuel schedule” indicates the fuel injection When engine is running specification A/F ALPHA-B1 % The mean value of the air-fuel ratio feedback cor- • When the engine is stopped, a certain value is indicated. • When engine is running specification range is indicated in “SPEC”. • This data also includes the data for the air-fuel ratio learning control. COOLAN TEMP/S °C or °F The engine coolant temperature (determined by the When the engine coolant temperature A/F SEN1 (B1) V The A/F signal computed from the input signal of HO2S2 (B1) V The signal voltage of the heated oxygen sensor 2 is HO2S2 MNTR(B1) RICH/LEAN • Display of heated oxygen sensor 2 signal: way catalyst is relatively small. - LEAN: means the amount of oxygen after three way catalyst is relatively large. When the engine is stopped, a certain |