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5 DETECT MALFUNCTIONING PART Check the following. I Joint connectors-18 I Harness for open or short between heated oxygen sensor 2 and ground © Repair open circuit or short to power in harness or connectors. 6 CHECK HEATED OXYGEN SENSOR 2 With CONSULT-II 1. Start engine and warm it up to the normal operating temperature. II. 6. Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to ± 25%. SEF066YA “HO2S2 (B1)/(B2)” should be above 0.63V at least once when the “FUEL INJECTION” is +25%. CAUTION: I Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto I Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner OK or NG OK © GO TO 9. NG © Replace malfunctioning heated oxygen sensor 2. GI MA EM LC FE AT AX SU BR ST RS BT HA SC EL IDX DTC P1147, P1167 HO2S2 Diagnostic Procedure (Cont’d) EC-509 |