Mazda 6 Service Manual: No.23 a/c does not work sufficiently

No.22 vibration concerns (engine)

No.24 a/c is always on or a/c compressor runs continuously

Other materials:

Mazda 6 Service Manual: Variable valve timing actuator removal/installation
L3 Caution Variable valve timing actuator can not be disassembled because it is a precision unit. Note Variable valve timing actuator camshaft sprocket is integrated with the variable valve timing actuator and cannot be disassembled. 1. Follow the timing chain removal/installati ...

Mazda 6 Service Manual: Pid/data monitor inspection
  1. Connect the WDS or equivalent to the DLC-2. 2. Measure the PID value. Note Perform part inspection for the output device after PCM inspection. The PID/DATA MONITOR function monitors the calculated value of the input/output signals in the PCM. Therefore, if a monitored value ...