

Diagnostic procedure


Dtc p0340
Dtc p0420Mazda 6 Service Manual: Intake-air system removal/installation
Warning
When the engine and intake-air system are hot, they can badly
burn. Turn off the engine and wait until they are cool before removing the
intake-air system.
Fuel vapor is hazardous. It can easily ignite, causing serious
injury and damage. Always keep sparks and flames away from ...
Mazda 6 Service Manual: Road test
Warning
When performing a road test, be aware of other vehicles, people,
impediments, etc. to avoid an accident.
Note
When the legal speed limit must be exceeded, use a chassis
dynamomenter instead of performing a road test.
Road Test Preparation
1. Inspect the engine coolant le ...