7.
Does the scan tool show DTC P0153?
 | ▶ Substitute with a known - good ECM and check for proper operation. If the problem is corrected, replace ECM and go to "Verification of Vehicle Repair" procedure. |
 | ▶ Troubleshooting is finished. |
Replace the HO2S.
Clear DTC with GDS.
Start the engine and warm it up until the radiator fan comes on( more than at least 10 minutes).
Drive at a steady speed between 45-55 mph(72-88 km/h) for 120 sec.
Stop and then maintain idle state.
Check if O2 sensor monitoring readiness is complete.
Does the scan tool show DTC P0153?
| ▶ Substitute with a known - good ECM and check for proper operation. If the problem is corrected, replace ECM and go to "Verification of Vehicle Repair" procedure. |
| ▶ Troubleshooting is finished. |
