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: Dtc clearing procedure
1. Start the on-board diagnostic test mode. 2. First press the POWER button, then simultaneously press AUDIO CONT button for 2 seconds or more. Caution Before clearing the DTCs, be sure to enter all of them displayed in the on-board diagnostic test mode in the Audio Repair Order Form. ...

Mazda 6 Service Manual: Washer fluid-level sensor inspection
1. Disconnect the negative battery cable. 2. Remove the washer tank. (See WASHER TANK REMOVAL/INSTALLATION) 3. Insoect for continuity between the washer fluid-level sensor terminals using an ohmmeter. 4. Verify that the windshield washer motor operates. If not as specified, replace the ...