Fault diagnosis instructions for Delphi
Requirements of latest regulations of
the foruth
phase of EU and China National IV Motorcycle: the
motorcycle with electronic fuel injection system must
be equipped with OBD2 fault diagnosis system,
namely:
1.
When the motorcycle is started, the power fault
light must be on. If there is no fault after start, the
fault light will go out; if there is any fault, the fault
light will be on.
2. If the motorcycle has experienced a historical fault
(electric spray failed during assembly, debugging
or riding, but it has returned to normal), fault light
msut be on after start, but it can only go out after
4
working cycles; at this time, historical faults
cannot be detected using diagnostic apparatus, and
no fault code can be rea
d.
The proc
essing method is now described as
follows: If the fault light is on, but no fault code can be
read using diagnostic apparatus, it can be determined as
historical fault. The method to remove historical fault is
as follows:
Resetting method of
motorcycle and keep it at
idle speed for 30 seconds,
wait for
15 seconds after closing the key, and then
quickly opening and closing the key for
times (the time interval
should not exceed 1 second),
the last operation is to turn off the power, wait for 15
seconds and then start to see whether the fault light is
on. If the fault light is still on, repeat the resetting
operation.
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