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Questions XX on 1 AZ-FSE

Questions XX on 1 AZ-FSE 1
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Questions XX at 1AZ-FSE

Questions XX on 1 AZ-FSE 2

fig. 1
Immediately attracted attention by the increased percentage of opening TPS (marked with a red dot)
and large closing duty cycle on an ETCS motor (Electronic throttle control system)

Questions XX on 1 AZ-FSE 3

After re-gasing (when switching to lean mixture), the engine speed began to “float” within 1000-1800 rpm

Questions XX on 1 AZ-FSE 4

fig. 3

Questions XX on 1 AZ-FSE 5

fig. 4

This graph shows how much (from 0% to 40%) the duty cycle of the control pulses for the ETCS drive changes and, as a result, there is a problem with xx revolutions in LEAN mode

Questions XX on 1 AZ-FSE 6

The fault was a dirty throttle and a clogged air filter.
Data Stream ETCS after cleaning the throttle-changes are marked with a red dot. The duty cycle of the control pulses on the ETCS drive is stable – about 15%

Questions XX on 1 AZ-FSE 7

Data Stream in lean mode

Questions XX on 1 AZ-FSE 8

Schedule engine xx-throttling-xx. It can be seen that the throttles after throttling are stable

Questions XX on 1 AZ-FSE 9

PS
It remains to solve the problem with a large long-term fuel correction (LTFT D4 from 15 to 30%), but this is a completely different story – 🙂

Nizhnevartovsk city,
Diagnostic Anton, (12volt)

Toyota Opa 2000-2005

with engines 1ZZ-FE (1,8) · 1AZ-FSE (2,0 D-4)
Repairs. Exploitation. Maintenance.

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