
Diagnostic procedure

Dtc c1508
Dtc u2021Mazda 6 Service Manual: Spark plug removal/installation
1. Disconnect the negative battery cable.
2. Remove the plug hoie plate.
Lift off and remove the plug hole plate from the installation areas
(rubber and clips) as shown in the figure.
3. Disconnect the high-tension lead.
4. Remove the spark plugs using the plug-wrench.
5. Install th ...
Mazda 6 Service Manual: California Customers
1. Mazda North American Operations participates in BBB AUTO LINE, a mediation/
arbitration program administered by the Council of Better Business Bureaus [4200
Wilson Boulevard, Arlington, Virginia 22203] through local Better Business Bureaus.
BBB AUTO LINE and Mazda have been certified by the ...