

Diagnostic procedure


Dtc p0707
Dtc p0711Mazda 6 Service Manual: Heater core inspection
1. Remove the A/C unit. (See A/C UNIT REMOVAL/INSTALLATION.)
2. Remove the heater core from the A/C unit.
3. Inspect for cracks, damage, and coolant leakage.
If any problems are found, replace the heater core.
4. Inspect for bent fins.
If any are bent, use a flathead screwdriver to stra ...
Mazda 6 Service Manual: Fuel tank removal/installation
Warning
Repairing a fuel tank that has not been properly steam cleaned can
be dangerous. Explosion or ire may cause death or serious injury. Always
properly steam clean a fuel tank before repairing it.
Fuel line spills and leakage are dangerous. Fuel can ignite and
cause serious injur ...