Moxy MT 26, Manual

Page: 34 / 170

SHOP MANUAL MT26-31 - 06.2005
Engine
Tier-3 710655-
Ch 1
page
34
How to erase fault codes from the ECU control unit
The control unit memory has sufficient space to store 40 fault codes.
The fault codes are stored in two different places in the control unit.
Erasing with the diagnostic switch erases the fault codes that are flashed on
the diagnostic lamp.
However, the fault codes will remain in another memory which can only
be accessed using a ECOM.
Both fault code memories are erased at the same time with ECOM.
How to erase fault codes during pre-delivery inspection
Fault codes are to be erased with ECOM during pre-delivery inspection
so that both memories are empty when the engine is delivered to the customer.
How to erase fault codes using the diagnostics switch
How to erase fault codes that are flashed on the diagnostic lamp
is described below.
The fault codes are still stored elsewhere in the control unit.
These fault codes are erased with ECOM.
1 Start and switch off the engine once so that a shutdown test is carried out.
Wait until the ECU warning lamp has gone out.
First press and hold the diagnostics switch, then turn the starter key
to the drive position.
Keep pressing the diagnostics switch for between 3 and 10 seconds.
The passive fault codes will then have been cleared.
When the engine is started again, the fault codes that are active
will be shown again.
3 Start the engine and check that the diagnostics lamp goes out.
4 Press the diagnostics switch.
The fault code memory should be empty; only one long
flash should be seen.