Circuit/System Testing

Verify the integrity of the entire exhaust system by visually inspecting for the following conditions:

• Damaged exhaust system components
• Loose or improperly installed exhaust system components
• Leaks, or improperly routed pressure lines-The smaller tube connects to the front of the DPF and the smaller port of the exhaust pressure sensor. The lines should have a continuous downward gradient, without sharp bends, or kinks from the differential pressure sensor to the exhaust particulate filter assembly.