Volvo 819 E Service Manual page 105

28
Group Ignition systems
Fault tracing, Rex-I
•
3
224
-OR
Check ignition coil/power stage ground connec-
tions
Measure resistance
nector
ohm. If resistance is too high,
and/or
146 729
Measure resistance between terminal A in 2-pole con-
nector
place ground
ohm
146 729
Check signal lead between ignition coil/power
stage and control unit
Connect
tor
Buzzer
Persistent failure of
faults or
indicates internal fault in
Verify by installing new
stage.
Reinstall ignition
tor and reconnect to unit.
Reconnect ignition
Check
between
and ground. Resistance
replace ground lead as
and ground. Clean ground connection and/or
lead as required if resistance
.
buzzer between terminal B in 2-pole
and terminal 16 in control
should sound if lead is
engine
correction of fault(s} which have been located
control
coil. Reassemble
coillpower stage
that no new fault codes are
terminal B in 3-pole
must not exceed
clean ground connection
required.
exceeds
connec-
unit connector.
intact.
to start despite absence of
unit or power stage.
control unit or new power
control unit connec-
connectors.
displayed.
N29
con-
0.1
0.1
N30
N31