Volvo 819 E Service Manual page 87

V
12 V
1
I
I
4
I
I
Fault tracing, EZ-102K
Check
manifold
Check LT supply to ignition coil and power
Switch
15
coil
be approx. 12 V.
If vottage
Open-circuit in
wiring diagram.)
Disconnect power stage conneetor
rear
age
Check
1 and 4 and ground
ally between each
If vottage
Open-circuit in
wiring diagram,)
Switch off ignition.
143 266
Group
secu r ity of ground leads
(twin black leads).
on ignition. Measure voltage
terminal 15 and ground. Voltmeter
=
0 V:
lead from central electrical unit. (See
back con nector sleeve and connect
of connector. Measurement
terminal s, resulting in
that voltage across each of
is approx.
terminal
= 0 V:
lead from central electrical unit. (See
28 Ignition systems
Fault tracing, EZ-102K
at terminals on intake
stage
between ignition
reading shou
instrument
from front may dam-
looseness and poor contact.
connector terminals
12 V. Measure individu-
and ground.
HI
H2
ld
H3
to
137