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2 CHECK HO2S2 (REAR) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to Wiring Diagram. MTBL0527 Continuity should exist. 2. Check harness continuity between ECM terminal or HO2S2 terminal and ground as follows. Refer to Wiring Diagram. MTBL0528 Continuity should not exist. 3. Also check harness for short to power. OK or NG OK © GO TO 3. NG © Repair open circuit or short to ground or short to power in harness or connectors. 3 CHECK HO2S2 (REAR) GROUND CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between HO2S2 terminal 4 and engine ground. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to power. OK or NG OK © GO TO 4. NG © Repair open circuit or short to power in harness or connectors. 4 CHECK HO2S2 (REAR) CONNECTORS FOR WATER Check heated oxygen sensor connector 2 (rear) and harness connector for water. Water should not exist. OK or NG OK (With CONSULT-II) © GO TO 5. OK (Without CONSULT- © GO TO 6. NG © Repair or replace harness or connectors. GI MA EM LC FE AT TF PD AX SU BR ST RS BT HA SC EL IDX DTC P0140, P0160 HEATED OXYGEN SENSOR 2 (REAR) (BANK 1)/(BANK 2) (HIGH VOLTAGE) Diagnostic Procedure (Cont’d) EC-283 |