Yaroslavl Engine Plant YMZ-536, Руководство по эксплуатации

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E.C.S. DIAGNOSTICS
The electronic Engine Control System ensures self-diagnostics
of the E С U, transmitters and some other vehicle devices. When any
deviations in the engine operation are detected, the malfunction
(diagnostic) lamp in the driver’s cabin turns on.
When the diagnostic lamp turns on, press the diagnostic key
and hold it for more than 2 seconds. After the key is released, the
diagnostic lamp will “blink” the blink code of the engine malfunction
as a series of flashes (an example blink code 1-2-4 is shown in Fig.
47).
Press the diagnostic key again to see the blink code of the next
malfunction. In this manner you can see all malfunctions stored in the
ECU memory. After displaying the last malfunction stored in
memory, the ECU shows the first malfunction again.
Fig. 47. Example of blink-code 1-2-4
(low voltage in on-board system)
A full list of failures with interpretation of each blink-code is given in
the YMZ document ref. 5340.3902250 IS specially devoted to the
diagnostics of YMZ-5340 and YMZ-536, their modifications and
assembly sets.
For elimination of faults detected please call a service center.
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Units Tens Hundreds
Pushing
the key
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