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EC-76 < SYSTEM DESCRIPTION > [QR25DE] DIAGNOSIS SYSTEM (ECM) *: The item is indicated, but not used. NOTE: Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. WORK SUPPORT MODE Work Item SYSTEM 1 DIAG- INCMP/CM- PLT • Indicates DTC P117A self-diagnosis con- dition. - INCMP: Self-diagnosis is incomplete. SYSTEM 1 DIAG- ABSNT/ PRSNT • Indicates DTC P117A self-diagnosis con- dition. - ABSNT: Self-diagnosis standby MASS AIR FLOW Hz • The signal frequency of the mass air flow sensor is displayed. • When the engine is stopped, a certain value is indicated. • When engine is running, spec- ification range is indicated in Monitored item Unit Monitor Item Selection Description Remarks ECU IN- PUT NALS MAIN SIG- NAL S Work item Condition Usage IDLE AIR VOL LEARN • The idle air volume that keeps the engine within the spec- ified range is memorized in ECM. When learning the idle air volume EVAP SYSTEM CLOSE Close the EVAP canister vent control valve in order to make °C (32°F). • No vacuum and no high pressure in EVAP system °C (32°F). • Within 10 minutes after starting “EVAP SYSTEM CLOSE” the condition except above, CONSULT will discontinue it When detecting EVAP vapor leak FUEL PRESSURE RELEASE • Fuel pump will stop by touching “START” during idling. Crank a few times after engine stalls. When releasing fuel pressure from TARGET IGN TIM ADJ* • Idle condition When adjusting target ignition tim- TARGET IDLE RPM ADJ* • Idle condition When setting target idle speed VIN REGISTRATION • In this mode, VIN is registered in ECM. When registering VIN in ECM SELF-LEARNING CONT • The coefficient of self-learning control mixture ratio returns to the original coefficient. When clearing mixture ratio self- CLSD THL POS LEARN • Ignition on and engine stopped. When learning the throttle valve SAVING DATA FOR REPLC CPU In this mode, save data that is in ECM. SAVING DATA FOR REPLC CPU WRITING DATA FOR REPLC CPU In this mode, write data stored by “SAVE DATA FOR CPU WRITING DATA FOR REPLC |