Summary of Contents for Honda Accord 1996 62SN725 Service Manual - Page 18

  • Honda Accord 1996 62SN725 Service Manual - Page 18

    Idle Control System Idle Speed is controlled erm the ECM only With the amount ol tuel being injected into the cylinders. Fuel Supply System A close cooperation between ECM and Fuel Injection Pump is necessary to achieve an optimum inthe combustion process. Yherelore the Fuel Injection Pump Assembly contains diflerent devicescontrolling the actual luel injection quantity and timing. In case oi any major lault or any problem in the electric supply circuit to the Fuel Injection Pump. the Fuel Shut-oft Solenoid cuts oil the lust supply immediately Intake Air system The Intake Air System contains Air Cleaner, Turbocharger. the Intake Manilold, Intercooler and Mass Air Flow Sensorl Emission Control System Effective Emission Control is done by use ol an Exhaust Gas Recirculation (EG Fl) Solenoid Valve. Exhaust Gas Recirculation (EGR) Valve. Crankcase Emission Control and Fuel Vapour Evaporative Loss Control. When EGR is required lor control at oxides oi nitrogen (NOx) emissions. the ECM supplies ground to EGH Control Solenord Valve which then supplies regulated vacuum to the EGR Valve and exhaust gas is drawn back into the Intake Manilold to decrease combustion temperatures and therelore emissions at NOxl ECM Fail—salelBack—up Functions 1‘ Fail—sale Function When an abnormality occurs in a signal trom a sensor. the ECM ignores that signal and assumes a pre— programmed value tor that sensor that allows the engine to continue to run. although at a reduced level of perlormance, 2. Becki up Function When an abnormality occurs in the ECM itsell. the ECM implements back—up to allow the engine running although at a reduced level or pertormance. 3 Sell—diagnosis Function (Malfunction Indicator Lamp (MIL) . When an abnormality occurs in a signal from a sensor. the ECM lights the MIL and stores the Diagnostic Trouble Code (DTC) in erasable memory. When the ignition is initially turned on. the ECM supplies ground lorthe MtL lortwo seconds to check MIL bulb condition. 11-19