Mazda 6 Service Manual: No.4 hard to start/long crank/erratic start/erratic crank

No.3 will not crank

No.5 engine stalls-after start/at idle

Other materials:

Mazda 6 Service Manual: Manual Shift Mode
The manual shift mode gives you the feel of driving a manual transaxle vehicle by allowing you to operate the selector lever manually. This allows you to control engine rpm and torque to the drive wheels much like a manual transaxle when more control is desired. To change to manual shift mode ...

Mazda 6 Service Manual: Multiplex communication system
Outline In case the controller area network (CAN) system is malfunctioning, read the DTCs of the following modules, using the SST (WDS or equivalent) to determine the malfunctioning system. - PCM - DSC HU/CM (with DSC) - ABS (ABS/TCS) HU/CM (with ABS (ABS/TCS) - Instrument clus ...