Volvo 819 E - Page 97

Group 28 Ign ition systems
Fau lt tracing, R ex -'
N4
Control function 1
111 No fault
142 Con
tr ol unit fault. Replace unit.
143 Knock sensor signal absent. See N25.
144 Fuel
system load signal absent . See N23.
214 Pulse
generator sig nal absent int ermitten tl y. See
N24.
224 Engine t
emperatu re sensor faulty. See N21 .
Control function 2
N5
S witch on ignition. Depress button on diagnostic unit
twi ce, each time for more than 1 seco nd . lamp should
co mmence to flash rapidly . If not, proceed to N11 -N18.
N7
Operate throttle control in engine compartment
lamp should first go out and then display code 334, in-
dicating that throttle switch is opera ting corre c tly in
idling position. See N22 if code is not displayed but
lamp continues to flash rap idly.
000 - 000
0000
3 sees
--~'--
r "
1
216
,
4
,
•
146 716
1
14J 804
N6
Operate starter motor
l amp should first go out and then display code 141 , in-
dicating
that pulse generator signa l is okay. See N24 if
c ode is not displayed but lamp continues to flash
rapidly.
S
witch off ignition.