GDS Data Analysis
- Connect GDS and select "DTC Analysis" mode
- Warm up the engine.
- Monitor the parameters related to DTC on the "Current Data" menu of the GDS as shown below while press and depress gas pedal.
Fig.1) Downstream O2 sensor service data review.
- Is parameter displayed within specifications?
YES
- Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to next step.