Mazda 6 Service Manual: No.7 slow return to idle

No.6 cranks normally but will not start

No.8 engine runs rough/rolling idle

Other materials:

Mazda 6 Service Manual: System Canceling
When the Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) is turned off, press the Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) OFF switch. The Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) OFF indicator light tu ...

Mazda 6 Service Manual: Immobilizer system reprogram procedure
Note When an error occurs during the reprogram procedures, except when the PCM is replaced, repeat the procedure from Step 1. If you still cannot reprogram, confirm how many keys can start the engine. Then, perform the key replacement or addition reprogram procedure according to the val ...