1. Disconnect the negative battery cable.
2. Remove the center panel module. (See CENTER PANEL MODULE REMOVAL/INSTALLATION.)
3. Remove in the order indicated in the table.


4. Install in the reverse order of removal.
LCD Unit Removal Note
1. Pull up the front part of the LCD unit.

2. While pressing down the unit behind the LCD unit, pull the LCD unit out from the dashboard.

Car-navigation unit removal/installation
Audio control switch removal/installationMazda 6 Service Manual: Pcv valve inspection
1. Disconnect the negative battery cable.
2. Remove the intake maniforld.(see INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)
3. Remove the PCV valve.
4. Blow through the valve and verify that air flows as specified.
If not as specified, replace the PCV valve.
Specification
...
Mazda 6 Service Manual: Procedures for determining the location of a malfunction
System Wiring Diadram
PCM
1. Check the display of DTC U0121 and/or U0155, using the SST (WDS or
equivalent). (See DTC TABLE.)
2. Referring to the following table, determine the malfunctioning part of the
CAN system.
ABS/TCS HU/CM or DSC HU/CM
1. Accec and monitor the PCM MSG and IC MSGo ...