Test Notes

You should enter this Pinpoint Test only when directed here.

This Pinpoint Test is intended to diagnose the following:
- Exhaust system pipes (front and rear)
- Exhaust system muffler and tail-pipe assembly
- Catalytic converter
- Exhaust manifold
- Harness circuits: Downstream Heated Oxygen Sensors (HO2S)

DESCRIPTION
For additional information on the Catalyst Efficiency Monitor, refer to Description and Operation / On Board Diagnostics II System Monitors.


For additional information on Exhaust Systems, refer to Exhaust System / Description and Operation.