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Diagnostic Procedure NHEC0839 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 CHECK HO2S2 POWER SUPPLY CIRCUIT 1. Disconnect corresponding heated oxygen sensor 2 harness connector. SEC134D 2. Turn ignition switch ON. SEF314X OK or NG OK © GO TO 4. NG © GO TO 3. GI MA EM LC FE AT AX SU BR ST RS BT HA SC EL IDX DTC P0037, P0038, P0057, P0058 HO2S2 HEATER Diagnostic Procedure EC-185 |