Volvo 819 E - Page 89

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Group 28 ignition s yst ems
Fault tracin g, EZ·102K
H6
Check power stage ground lead
Measure resistance between co nnector terminal 2 and
ground . Resistance should be 0 ohm .
If readi ng is different : Check lead (s ee wiring diagram ).
Ground term inal is on intake manifold .
H7
Check screen connections
Check that screen of lead to t ermina l 5 is connected to
terminal 3.
H8
Check signal from control unit to power stage
Disconnect leads from ignit i on coil te rminal 1 (r ed!
white) and 15 (b luel.
Measure
voltage between t erminal 5 or 6 in p ower
stage conn ec tor and ground . Operate starter motor.
Voltmeter
should indica te approx. 2 V.
No reading: See top of page 146. Re co nne ct coil leads.
Re connect power stage co nn ector.
..... '3
12V
,,-----.....
V
Undo dis tr ibu t or con nector . Swi tch on igni ti on. Mea-
sure
voltage between pos itive term inal (red lead) and
ground . Readi ng should be approx . 12 V.
139