Check Lead From Ac Control Unit; Check Injectors; If The Measured Resistance Is Wrong - Volvo 240 1989 Service Manual

Checks
Fuel sysrcm LH2.4 240
E1B
Check lead Irom AC control unit
Connect ohm meier between ground and no. 15
connection on conlrol unit connector.
Reading at AC oH should be approx. 1 k!l.
Reading at AC on should be approx . to U .
b;-;..---.-_~ (uJou r cu ~ -.-:-:::-:­
SO
.=
Ohu:k Ul\ = Uru\\ n ( ; ~
=
t; reen
(i N :: l;tpy r •
Yellow
OR .
O r dnge
W - Wh ile I' . Pink \10 .:. VllJtl!t
U .:. Red HI
::a
IHue CU :: CIJPpcr
If the measured resistance is wrong :
Remove injector connectors and te st them sepa ­
rately. Reading tor individual injectors should be
16H.
X-________
-J ~
18
OR
9
OR
Ell
Check Injectors
Connect ohm meter between connections 9 and 18
on conlrol unit connector. Reading should be 4 U . If
the reading is higher, current is not going through the
Injeclors.
If
re sistance is :
Approx . 5.3
n
Faull in one injector or ils teads .
Approx . 8
n
Faull in two injectors or their leads.
Approx . 16
n
Faull in three injectors or their teads .
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