Diagnostic procedure
Mazda 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: Rear washer nozzle removal/installation
1. Disconnect the negative battery cable.
2. Remove the liftgate upper trim. (See LIFTGATE UPPER TRIM
REMOVAL/INSTALLATION)
3. Remove the rear washer hose from the rear washer nozzle.
4. Compress the tabs of the rear washer nozzle.
5. Pull the rear washer nozzle out to remove it.
6. Install ...