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SEF243Y SEF175Y PROCEDURE FOR MALFUNCTION D NHEC0054S04 CAUTION: Always drive vehicle at a safe speed. With CONSULT-II NHEC0054S0402 1) Turn ignition switch “ON”. 2) Start engine and warm it up to normal operating temperature. 3) Select “DATA MONITOR” mode with CONSULT-II. 4) Check the voltage of MAS AIR/FL SE with “DATA MONITOR”. 5) Increases engine speed to about 4,000 rpm. 6) Monitor the linear voltage rise in response to engine speed 7) Maintain the following conditions for at least 10 consecutive ENG SPEED More than 2,000 rpm THRTL POS SEN More than 3V Selector lever Suitable position Driving location Driving vehicle uphill (Increased engine load) 8) If 1st trip DTC is detected, go to “Diagnostic Procedure”, SEF534P Overall Function Check NHEC0055 PROCEDURE FOR MALFUNCTION D NHEC0055S01 Use this procedure to check the overall function of the mass air flow With GST NHEC0055S0101 1) Start engine and warm it up to normal operating temperature. 2) Select “MODE 1” with GST. 3) Check the mass air flow sensor signal with “MODE 1”. 4) Check for linear mass air flow sensor signal value rise in 5) If NG, go to “Diagnostic Procedure”, EC-157. GI MA EM LC FE AT AX SU BR ST RS BT HA SC EL IDX DTC P0100 MASS AIR FLOW SENSOR (MAFS) DTC Confirmation Procedure (Cont’d) EC-155 |