This function is called «freeze frame» («FREEZE FRAME»). Analyzing data «freeze frame» With the help of the MUT-II, an efficient troubleshooting can be carried out.
Displayed data positions «freeze frame» shown in the table below.
List of displayed positions
Note. If several faults are detected in several systems, only the one fault that was detected first is stored.
Test readiness state
Electronic engine control unit (cars with manual gearbox) or an electronic engine and automatic transmission control unit (vehicles with automatic transmission) controls, evaluates (OK/Faulty) and remembers the dynamics of changes in the technical condition of the main diagnosed elements indicated below.
The dynamics of changes in the technical condition can be read by the MUT-II device (if the electronic control unit has already stored information about the technical condition of some element before, MUT-II displays «Complete» - «Done»).
Finally, if diagnostic trouble codes are erased, or when the battery is disconnected, information about the technical condition of the element is also erased at the same time (the memory of the electronic control unit is reset)
- catalytic converter: P0420
- oxygen concentration sensor: P0130
- oxygen concentration sensor heater: P0135, RO141.
Warnings
- Do not attempt to change the position of the engine idle speed adjusting screw (fixed SAS) (fig. 6.3). This screw is factory set with high precision and does not require adjustment.
- If such interference occurs, the buffer throttle closing position is changed, which will cause the engine control unit to remember this incorrect throttle position.