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TROUBLE DIAGNOSIS EC-131 C D E F G H I J K L M A EC Revision: 2005 August 2005 Murano *: The items are the same as those of 1st trip freeze frame data. DATA MONITOR MODE × : Applicable ABSOL TH-P/S [%] ● The throttle valve opening angle at the moment a malfunction is detected is displayed. B/FUEL SCHDL ● The base fuel schedule at the moment a malfunction is detected is displayed. INT/A TEMP SE [ ° C] or [ ° F] ● The intake air temperature at the moment a malfunction is detected is displayed. Freeze frame data item* Description Monitored item [Unit] ECM INPUT SIG- NALS MAIN SIG- NALS Description Remarks ENG SPEED [rpm] × × ● Indicates the engine speed computed ● Accuracy becomes poor if engine speed ● If the signal is interrupted while the MAS A/F SE-B1 [V] × × ● The signal voltage of the mass air flow ● When the engine is stopped, a certain B/FUEL SCHDL × ● Base fuel schedule indicates the fuel A/F ALPHA-B1 [%] × ● The mean value of the air-fuel ratio ● When the engine is stopped, a certain ● This data also includes the data for the A/F ALPHA-B2 [%] × COOLAN TEMP/S [ ° C] or [ ° F] × × ● The engine coolant temperature (deter- ● When the engine coolant temperature A/F SEN1 (B1) [V] × × ● The A/F signal computed from the input A/F SEN1 (B2) [V] × HO2S2 (B1) [V] × ● The signal voltage of the heated oxygen HO2S2 (B2) [V] × HO2S2 MNTR (B1) × ● Display of heated oxygen sensor 2 sig- ● When the engine is stopped, a certain HO2S2 MNTR (B2) × VHCL SPEED SE [km/ × × ● The vehicle speed computed from the BATTERY VOLT [V] × × ● The power supply voltage of ECM is ACCEL SEN 1 [V] × × ● The accelerator pedal position sensor ● ACCEL SEN 2 signal is converteds by ACCEL SEN 2 [V] × |