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EC9-368 < DTC/CIRCUIT DIAGNOSIS > [R9M] P2243 A/F SENSOR P2243 A/F SENSOR DTC Logic INFOID:0000000010309390 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PERFORM DIAGNOSIS PROCEDURE NOTE: >> Proceed to EC9-368, "Diagnosis Procedure" . Diagnosis Procedure INFOID:0000000010309391 1. CHECK ECM HARNESS CONNECTOR CONNECTIONS 1. Turn ignition switch OFF. 2. Check ECM harness connector connection. Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2. CHECK AIR FUEL RATIO (A/F) SENSOR HARNESS CONNECTOR CONNECTIONS Check A/F sensor harness connector connection. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace error-detected parts. 3. CHECK A/F SENSOR CIRCUIT FOR OPEN AND SHORT Check A/F sensor circuit for open and short. Is the inspection result normal? YES >> GO TO 4. NO >> Repair or replace error-detected parts. 4. CHECK INTERMITTENT INCIDENT Perform GI-41, "Intermittent Incident" . Is the inspection result normal? YES >> GO TO 5. DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P2243 PROPOR RICH SEN CIRC ECM detects air fuel ratio (A/F) sensor circuit is • Harness or connectors (A/F sensor circuit is open.) • A/F sensor + - Continuity ECM A/F sensor Connector Terminal Connector Terminal F82 89 F75 3 Existed F83 115 6 116 2 119 1 |