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4 CHECK HEATED OXYGEN SENSOR 2 HEATER (REAR) Refer to “Component Inspection”, EC-271. OK or NG OK © GO TO 5. NG © Replace heated oxygen sensor 2 (rear). 5 CHECK INTERMITTENT INCIDENT Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-146. © INSPECTION END SEF221W Component Inspection NCEC0187 HEATED OXYGEN SENSOR 2 HEATER (REAR) NCEC0187S01 Check the following. Check resistance between terminals 2 and 3. Resistance: 2.3 - 4.3 Ω at 25°C (77°F) 2. Check continuity. Terminal No. Continuity 1 and 2, 3, 4 No 4 and 1, 2, 3 If NG, replace the heated oxygen sensor 2 (rear). CAUTION: I Discard any heated oxygen sensor which has been I Before installing new oxygen sensor, clean exhaust sys- GI MA EM LC FE CL MT AT AX SU BR ST RS BT HA SC EL IDX DTC P0141 HEATED OXYGEN SENSOR 2 HEATER (REAR) Diagnostic Procedure (Cont’d) EC-271 |