Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION .
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
- Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) A/T in D, M/T in 3rd or 4th Drive the vehicle at 25 mph (40 km/h) or less for 5 minutes, then drive at a steady speed about 32 mph (51 km/h) or more
- Monitor the OBD STATUS for DTC P0133 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES: Go to step 6 . NO: If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM. If the HDS indicates EXECUTING, keep driving until a result comes on. If the HDS indicates OUT OF CONDITION or NOT COMPLETED, go to step 3 and recheck.
- Turn the ignition switch to LOCK (0).
- Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(ref-320426-S04734240142009071400000) ).
- Turn the ignition switch to ON (II).
- Reset the ECM/PCM with the HDS.
- Do «ECM/PCM IDLE LEARN PROCEDURE»(ref-320447-S03803966382009071400000) .
- Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
- Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70=0 A/T in D, M/T in 3rd or 4th Drive the vehicle at 25 mph (40 km/h) or less for 5 minutes, then drive at a steady speed about 32 mph (51 km/h) or more
- Check for Pending or Confirmed DTCs with the HDS. Is DTC P0133 indicated? YES: Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM, then go to step 1 . NO: Go to step 14 .
- Monitor the OBD STATUS for DTC P0133 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES: Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 13 , go to the indicated DTC's troubleshooting. NO: If the HDS indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM, then go to step 1 . If the HDS indicates EXECUTING, keep driving until a result comes on. If the HDS indicates OUT OF CONDITION or NOT COMPLETED, go to step 11 .