Mazda 6 Service Manual: No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.19 excessive shift shock on torque converter clutch (tcc)

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

Other materials:

Mazda 6 Service Manual: Idle air control (iac) valve inspection
Note Perform the following inspection only when directed. Operation Test Carry out the Idle Air Control Inspection. (See Idle Air Control System Inspection.) If not as specified, perform the further inspection for the IAC valve. Resistance Inspection 1. Disconnect the negative batt ...

Mazda 6 Service Manual: Intermittent rear wiper relay inspection
1. Connect the connector to the intermittent rear wiper relay. 2. Connect the negative battery cable. 3. Measure the voltage at the intermittent rear wiper relay using voltmeter. When inspecting terminal D for continuity, disconnect the intermittent rear wiper relay connector. 4. If the ...