YDT-35 Operating and Servicing Manual
HL066(EN) ISSUE 1, 05/2015 37
Figure 4.18 Ohm/Ind/Cap Test Completed Screen
4.4.2 Injector Spray Function Test (ISF)
PIEZO INJECTORS CAN OPERATE FOR A MAXIMUM OF 2 MINUTES AT EACH
TEST CONDITION. OPERATING THE INJECTOR FOR ANY PERIOD LONGER MAY
RESULT IN THE TEMPERATURE PROTECTION CIRCUIT BEING ACTIVATED. IF
ACTIVATED, TESTS CAN BE RESTARTED AFTER A SHORT COOLING PERIOD.
Each Injector profile carries a set of 4 different test loads:-
1. Full Load
2. Mid-Low Load
3. Pre-Injection
4. Spray Condition.
Refer to Figure 4.19
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