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EC-898 < COMPONENT DIAGNOSIS > [MR18DE] P1143 HO2S1 YES >> GO TO 2. NO >> Repair or replace ground connection. 2. RETIGHTEN HEATED OXYGEN SENSOR 1 Loosen and retighten heated oxygen sensor 1. Refer to EM-159, "Removal and Installation" . >> GO TO 3. 3. CLEAR THE SELF-LEARNING DATA 1. Clear mixture ratio self-learning value, refer to EC-696, "MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement" . 2. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171 detected or difficult to start engine? Yes >> Perform trouble diagnosis for DTC P0171. Refer to . No >> GO TO 4. 4. CHECK HEATED OXYGEN SENSOR 1 HEATER EC-829, "Component Inspection" Is inspection result normal? YES >> GO TO 5. NO >> Replace heated oxygen sensor 1. 5. CHECK INTERMITTENT INCIDENT Perform GI-55, "Intermittent Incident" . Is the inspection result normal? YES >> GO TO 6. NO >> Repair or replace. 6. REPLACE HEATED OXYGEN SENSOR 1 Replace heated oxygen sensor 1. >> INSPECTION END Component Inspection INFOID:0000000001161875 1. INSPECTION START Do you have CONSULT-III? Do you have CONSULT-III? YES >> GO TO 2. NO >> GO TO 3. 2. CHECK HEATED OXYGEN SENSOR 1 With CONSULT-III 1. Start engine and warm it up to normal operating temperature. 2. Set “POST TRIGGER” to 100% in “DATA MONITOR” mode with CONSULT-III. 3. Select “HO2S1 (B1)” and “HO2S1 MNTR (B1)”. 4. Hold engine speed at 2,000 rpm under no load during the following steps. 5. Touch “RECORD” on CONSULT-III screen. |