- changed diagnostic codes, PID data monitor functions and active commands functions;
- removed TBS pin of DLC connector;
- use of WDS or equivalent with anti-lock brakes (ABS/TCS) or DSC HU/CM allows 4-digit display of diagnostic codes and active assignment of command modes, which improves maintainability.
Pic. 6.12. Block diagram of the Mazda 6 on-board diagnostic system: 1 – a control lamp of the TCS system (DSC); 2 – a control lamp of shutdown of the TCS system (DSC); 3 – a lamp of the alarm system of antiblocking system of brakes; 4 – a lamp of the alarm system of brake system; 5 – fault display function; 6 - on-board diagnostics function; 7 - serial communication; 8 - memory function; 9 – fault detection function; 10 - data control function; 11 – active command function; 12 – reliability function; 13 - data input device; 14 - normal control area; 15 – DLC 2 connector; 16 - WDS or equivalent; 17 - function of checking hydraulic elements; 18 - output device