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SEC902C Overall Function Check NHEC1152 Use this procedure to check the overall function of the heated oxy- WITH GST NHEC1152S01 1) Start engine and warm it up to normal operating temperature. 2) Set voltmeter probes between ECM terminal 91 (bank 1 3) Check one of the following with engine speed held at 2,000 I The maximum voltage is over 0.6V at least one time. I The minimum voltage is over 0.1V at least one time. 4) If NG, go to “Diagnostic Procedure”, EC-481. Diagnostic Procedure NHEC1153 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 RETIGHTEN HEATED OXYGEN SENSOR 1 Loosen and retighten corresponding heated oxygen sensor 1. Tightening torque: 40 - 60 N·m (4.1 - 6.1 kg-m, 30 - 44 ft-lb) © GO TO 3. GI MA EM LC FE AT AX SU BR ST RS BT HA SC EL IDX DTC P1143, P1163 HO2S1 Overall Function Check EC-481 |