Mazda 6 Service Manual: No.5 engine stalls-after start/at idle

No.4 hard to start/long crank/erratic start/erratic crank

No.6 cranks normally but will not start

Other materials:

Mazda 6 Service Manual: System wiring diagram
ABS (ABS/TCS) DSC FOREWORD Before performing the steps in Symptom Troubleshooting, perform the On-board Diagnostic Inspection. To check the DTC, follow the DTC Inspection steps. ...

Mazda 6 Service Manual: Rear bumper removal/installation
1. Disconnect the negative battery cable. 2. Remove the rear combination light. 3. Remove in the order indicated in the table. 4. Install in the reverse order of removal. Rear Bumper Removal Note Pull the rear bumper ends (wheel arch) outward to disengage with the bumper slider. Cautio ...