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6E–121 3.2L ENGINE DRIVEABILITY AND EMISSIONS DTC P0134 –HO2S Circuit Insufficient Activity (Cont'd) Step No Yes Value(s) Action 8 1. Ignition “OFF.” HO2S low circuit. 3. If the HO2S low circuit measures over 5 ohms, repair open or poor connection as necessary. Was a HO2S low circuit problem found and corrected? — Verify repair Go to Step 9 9 1. Ignition “ON,” engine “OFF.” low circuits (ECM side) to ground. 3. Using a Tech 2, monitor Bank 1 HO2S 1 voltage. Is HO2S voltage in the specified range? 0-10 mV Go to Step 10 Go to Step 11 10 Replace HO2S. Is the action complete? — Verify repair — 11 Replace the ECM. Is the action complete? — Verify repair — |