Check Cold Start Valve; Check Knock Enrichment Signal From Ignition System; Check Idle Valve - Volvo 240 1989 Service Manual

Checks
Fuel system LH2.4 240
E18
Check COld slarl valve
Connect ohm meter betwee n connections 9 and 32
on control unit connector. Read,ng should be approx .
10n.
28
BN-W
system
approx. 0.7 V.
E19
Check knock enrichment sIgnal trom Ignltron
Tum on Ignilion .
Connect voltmeter between ground and no. 28 con­
neelion on control unit connector. Reading should be
Turn 011 Ignilion .
E20
Check Idle valve
Conneel ohm meIer between connections 9 and 33
on control unH connector.
Reading should be approx . 8
n.
46