Operation
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6.5.1 ECU OVERRIDE
NOTE:- ECU Override function is only applicable when the controller is configured for a
CAN engine.
NOTE:- Depending upon system design, the ECU may be powered or unpowered when
the module is in STOP mode. ECU override is only applicable if the ECU is unpowered when
in STOP mode.
When the ECU powered down (as is normal when in STOP mode), it is not possible to read the
diagnostic trouble codes or instrumentation. Additionally, it is not possible to use the engine
manufacturers’ configuration tools.
As the ECU is usually unpowered when the engine is not running, it must be turned on manually as
follows :
• Select STOP
mode on the DSE controller.
• Press and hold the START button to power the ECU. As the controller is in STOP mode,
the engine will not be started.
.
• The ECU will remain powered 2 minutes after the START button is released.
This is also useful if the engine manufacturer’s tools need to be connected to the engine, for instance
to configure the engine as the ECU needs to be powered up to perform this operation.
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