1. Remove the upper anchor of the front seat belt.
2. Remove the B-pillar lower trim.
3. Turn the seaming welt over.

4. Pull the B-pillar upper trim toward you, then disengage, clip B, and pin C from the body.
5. Disengage hook A from the body, then remove B-pillar upper trim.
6. Install in the reverse order of removal.
B-pillar lower trim removal/installation
Front side trim removal/installationMazda 6 Service Manual: Oil pressure switch inspection
1. Verify that the oil pressure warning light illuminates when the ignition
switch is at ON position.
2. Verify that the oil pressure warning light goes off when the engine is
started.
If the oil pressure warning light does not illuminate or remains
illuminated, inspect the related wirin ...
Mazda 6 Service Manual: No. 2 all on-board diagnostic functions inoperative
When performing an asterisked (*) troubleshooting inspection, shake the
wiring harness and connectors while doing the inspection to discover whether
poor contact points are the cause of any intermittent malfunctions. If there
is a problem, check to make sure connectors, terminals and wir ...