Volvo 240 1989 Service Manual page 28

Fault tracing
Fuel system LH2.4 - 240
Control function 1
A1
Open the diagnostic socket cover and connect the
selector cable to pin no .2.
Turn on the ignition.
Enter control system 1 by depressing the button
once.
Depress the button lor at least 1 second, but not more
than 3.
t:t
--0= - - 0=
1 1 1
Watch
t~e
light diode and count the number of flashes
in the three flash serie s indicating a lault code. The
flash series are separated by a three second interval,
making them easy to read.
Make a note 01 the fault codes.
If no fault codes are received by the diagnostic
unit, the diode will flash 1-1-1 and the luel system
is operating correctly.
Continue at A7.
II the light diode doesn't flash when the button is de­
pressed or il no code is flashed, reler 1081-82, El­
E4 and Ell.
A2
Check to see if any lault codes are stored in the
memory.
Depress the button again . Make a note 01 any
additional lault codes.
Depress the button a third time to see if a third · f ault
code is stored in the memory .
If the code received when the button was depressed
the first time is repeated, there are no other codes in
the memory.
NOTE! The diagnostic system memory is lull when
it contains three fault codes. Unlil those three are
rectified and the memory is erased, the system can­
not give inlormation on any other problems.
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