Volvo 819 E Service Manual page 86

Group 28 Ig nition systems
Fault tracing, EZ·102K
136
Symptom: Engine does not start
Fault tracing
First check whether or not
system by checking
Disconnect a plug
operate the starter
N.B. Ensure sparking does not
other wiring!
Spark present?
Ves Engine
No Check
Connect an
the coil.
starter
Spark at ignition coil?
Yes Check
Co rrect
No Ignition system fault.
Sw itch off ignition.
l a
the fault is in the ignition
for a spark at one of the plugs.
lead. connect it to a spare plug
motor.
take place
o r fuel system fault.
for spark at ignition coil
ignition lead and
Ground the plug and operate the
motor.
roto r, distri buto r cap and HT leads.
fau lts as requi red.
and
in vicinity of
:
plug directly to