Discuss the matter with an Authorized Mazda Dealer. This is the quickest and best way to address the issue.
Customer Assistance (U.S.A.)
STEP 2: Contact Mazda North American OperationsMazda 6 Owners Manual: Dtc c1148, c1158, c1168, c1178, c1233, c1234, c1235, c1236
Caution
When attaching the tester lead to the ABS (ABS/TCS) HU/CM harness
connector, the SST (49 G066 001) must be used. (See ABS (ABS/TCS) HU/CM
INSPECTION.)
Diagnostic procedure
...
Mazda 6 Owners Manual: Master cylinder removal/installation
1. Remove in the order indicated in the table.
R.H.D.
L.H.D.
2. Install in the reverse order of removal.
Master Cylinder Installation Note
Caution
Always install the gasket of the power brake unit push rod before
performing measurement inspections or adjustments.
1. Install the ...