Engine
SHOP MANUAL MT26-31 - 06.2005
Tier-3 710655-
Ch 1 page 33
Reading fault codes for the ECU control unit:
The instructions below explain how to read fault codes in
the form of flashes from the diagnostics switch.
You can see how to interpret the flash codes on the next page.
How to read fault codes from the diagnostics lamp
1 Switch on the ignition.
2 Press the diagnostics switch for at least one second. Diagnostic lamp will light up.
3 A fault code will be flashed out on the diagnostics
upper lamp for the control unit.
This flash code consists of
long flashes (about 1 second long)
and
short flashes (0.3 seconds long).
Long flashes are equivalent to tens and short flashes to units.
Example: long - long - short - short - short - short - short = fault code 25.
See the example on the right.
Repeat this procedure until the first flash code is repeated.
This means that the entire fault code memory has been flashed up.
If the fault code memory is empty, only one long flash
about four (4) seconds long is given.
See the example on the right.
4 See the flash code table for a description and localisation of the fault.
5 The PC-based diagnostics tool must to be used to gain further information on the fault code.
6 A single, very long flash (4 s) means that there are no fault codes stored in the memory.
How to read fault codes from the ECU control
unit
= 25
= 4 s
= 4 s
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