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Diagnostic Procedure NHEC0911 1 CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. Refer to “Ground Inspection”, EC-160. SEC047D OK or NG OK © GO TO 2. NG © Repair or replace ground connections. 2 CLEAR THE SELF-LEARNING DATA With CONSULT-II 1. Start engine and warm it up to normal operating temperature. SEF968Y 4. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? Without CONSULT-II 1. Start engine and warm it up to normal operating temperature. Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? Yes or No Yes © Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to EC-273, No © GO TO 3. GI MA EM LC FE AT AX SU BR ST RS BT HA SC EL IDX DTC P0139, P0159 HO2S2 Diagnostic Procedure EC-269 |