ES4440.2 Compact Failure Simulation Module - User’s Guide28
Hardware Features ETAS
This procedure ensures that the fuses are intact during failure simulation.
To ensure that checking the fuses does not have any effect on the signals
between the ECU and the load, the test circuit is only activated when the
ES4440.2 is in reset mode.
2.7.4 Changing Fuses
If you discover that one of the fuses is defective, proceed as follows:
Before opening the housing
1. Switch off the device.
2. Remove all connected lines.
To remove the right-hand front panel
3. Remove the four screws shown in the figure from
the right-hand front panel with a Phillips screw-
driver.
4. Remove the front panel cover.
The five fuses of the failure rails can now be easily
accessed (see the following figure).
Risk of electric shock!
There could be extremely dangerous high voltages at the individual
pins of the "ECU HV" and "LOAD HV" connections. Therefore you
should only open the housing when the device has been discon-
nected from the mains power and all other connections have been
removed.
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