Complete Overview Of The Fuel System; Fuses, Ground Connections And Connectors - Volvo 240 1989 Service Manual

Fuses
Fuel system L H2.4 - 240
Complete overview of the fuel system
Functions Bl -E28 constitute acomplete examination
01 Ihe IUllI system.
Fuses,
ground connections and connectors
B1
Check all ground connections
Make sure tile ground connections on the intake
manifold make good contact
Poor contact can b e th e cause of many diHerent fault
symptoms.
Check the grounding connection lor I. h e lambda­
sond althe right Iront mudguard.
~
iJ
1!14
IJ
IJ
0
m:m
B2
Check Ihat the luses for the pump relay and the
primary pump are OK
Pump relay fuse: In-line fuse In !he engine comp art­
ment
Tank pump fuse: fuse No. 4 in luse box.
B3
Check connectors lOt:
- air mass meter
- idle valve
- knock sensor
- coolant temperature sensor
Check for installation and connection.
B4
Check that the connectors are correct
Knock sensor connector
=
black sleeve; Coolant
lemperature sensor
=
white sleeve; Cold start valve
=
blue sleeve.
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