|
|
P0138, P0158 HO2S2 EC-229 < DTC/CIRCUIT DIAGNOSIS > [VK56DE] C D E F G H I J K L M A EC N P O 1. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to Wiring Diagram. 2. Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. 3. Also check harness for short to power. OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK HO2S2 CONNECTOR FOR WATER Check connectors for water. OK or NG OK >> GO TO 5. NG >> Repair or replace harness or connectors. 5. CHECK HEATED OXYGEN SENSOR 2 EC-231, "Component Inspection" OK or NG OK >> GO TO 6. NG >> Replace malfunctioning heated oxygen sensor 2. 6. CHECK INTERMITTENT INCIDENT GI-39, "How to Check Terminal" GI-42, "Intermittent Incident" >> INSPECTION END PROCEDURE FOR MALFUNCTION B 1. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten two ground screws on the body. DTC Terminals Bank ECM Sensor P0138 55 1 1 P0158 74 1 2 Continuity should exist. DTC Terminals Bank ECM Sensor P0138 55 1 1 P0158 74 1 2 Continuity should not exist. Water should not exist. |