Mazda 6 Service Manual: No.21 noise occurs at idle when vehicle is stopped in d, s, l ranges, or in r position

No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.22 no engine braking in hold mode

Other materials:

Mazda 6 Service Manual: Front/rear abs wheel-speed sensor inspection
Visual Inspection Remove the wheel and tire, and inspect the sensor for looseness and damage. Replace the sensor if necessary. Clearance Inspection Inspect the clearance between the wheel-speed sensor and the sensor rotor. Clearance 0.3-1.1 mm {0.012-0.043 in} Resistance Inspection ...

Mazda 6 Service Manual: Supplier identification procedure
Note When asking the supplier (service center) for repair or replacement, verify which supplier the module belongs to and enter in the Audio Repair Order Form. Identification With Printed Numbers/Label 1. Remove the audio unit. 2. Verify the supplier name written on the label attached ...