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DTC P0133, P0153 HO2S1 EC-233 C D E F G H I J K L M A EC 6. CHECK HO2S1 GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect heated oxygen sensor 1 harness connector. 3. Check harness continuity between HO2S1 terminal 4 and ground. 4. Also check harness for short to power. OK or NG OK >> GO TO 7. NG >> Repair open circuit or short to power in harness or connectors. 7. CHECK HO2S1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Disconnect ECM harness connector. 2. Check harness continuity between ECM terminal and HO2S1 terminal as follows. 3. Check harness continuity between the following terminals and ground. 4. Also check harness for short to power. OK or NG OK >> GO TO 8. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Continuity should exist. PBIB0017E DTC Terminals Bank ECM Sensor P0133 114 1 1 P0153 115 1 2 Continuity should exist. DTC Terminals Bank ECM Sensor P0133 114 1 1 P0153 115 1 2 Continuity should not exist. |