HF: Catalyst Efficiency Monitor and Exhaust Systems Introduction

HF: Pinpoint Tests

Note

This Pinpoint Test is intended to diagnose the following:

• Exhaust system pipes (front and rear)
• Exhaust system muffler and tailpipe assembly
• Catalytic converter
• Exhaust manifold
• Harness circuits: Downstream heated oxygen sensors (HO2S)

HF: Pinpoint Tests