Mazda 6 Service Manual: No.26 exhaust sulphur smell

No.25 a/c is not cut off under wide open throttle conditions

No.27 constant voltage

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Mazda 6 Service Manual: Dual proportioning valve replacement (without abs)
1. Remove in the order indicated in the table. 2. Install in the reverse order of removal. Dual Proportioning Valve Installation Note Install the dual proportioning valve so that the R mark faces the left side of the vehicle. ...

Mazda 6 Service Manual: Power window main switch inspection
Drivers side 1. Remove the driver-side front door trim. 2. Connect the power window main switch connector. 3. Measure the voltage at the power window main switch terminals as indicated below. 4. Disconnect the power window main switch connector before inspecting for continuity at terminals 1 ...