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I N ST RU M EN T CLU ST ER
F U EL LEVEL S EN D IN G U N IT FAILU RE —
TES T
2
Tu r n t h e ign it ion off.
Discon n ect t h e F u el Ta n k Modu le h a r n ess con n ect or.
Tu r n t h e ign it ion on .
N OTE: Th e B CM s e n d s o u t a lo w c u rre n t 12 v o lt s ig n a l o n th e F u e l Le v e l
S e n s o r S ig n a l c irc u it. Th is lo w c u rre n t s h o u ld n o t illu m in a te a 12 v o lt te s t
lig h t.
Usin g a 12-volt t est ligh t con n ect ed t o gr ou n d, pr obe t h e F u el Level Sen sor Sign a l
cir cu it in t h e F u el Ta n k Modu le h a r n ess con n ect or.
Does t h e t est ligh t illu m in a t e?
Yes
No
3
Tu r n t h e ign it ion off.
Discon n ect t h e F u el Ta n k Modu le h a r n ess con n ect or.
Mea su r e t h e r esist a n ce of t h e F u el Level Sen sor Gr ou n d cir cu it in t h e F u el Ta n k
Modu le h a r n ess con n ect or.
Is t h e r esist a n ce below 5.0 oh m s?
Yes
No
4
Tu r n t h e ign it ion off.
Discon n ect t h e BCM h a r n ess con n ect or.
Discon n ect t h e F u el Ta n k Modu le h a r n ess con n ect or.
Mea su r e t h e r esist a n ce bet ween t h e F u el Level Sen sor Sign a l cir cu it a n d t h e Sen sor
Gr ou n d cir cu it in t h e BCM con n ect or.
Is t h e r esist a n ce below 5.0 oh m s?
Yes
No
5
Tu r n t h e ign it ion off.
Discon n ect t h e BCM h a r n ess con n ect or.
Discon n ect t h e F u el Ta n k Modu le h a r n ess con n ect or.
Mea su r e t h e r esist a n ce bet ween gr ou n d a n d t h e F u el Level Sen sor Sign a l cir cu it .
Is t h e r esist a n ce below 5.0 oh m s?
Yes
No
6
Tu r n t h e ign it ion off.
Discon n ect t h e F u el Ta n k Modu le h a r n ess con n ect or.
Discon n ect t h e BCM h a r n ess con n ect or.
Mea su r e t h e r esist a n ce of t h e F u el Level Sen sor Sign a l cir cu it bet ween t h e F u el Ta n k
Modu le h a r n ess con n ect or a n d t h e BCM h a r n ess con n ect or.
Is t h e r esist a n ce below 5.0 oh m s?
Yes
No
ACTION
→ Repa ir t h e F u el Level Sen sor Sign a l cir cu it for a sh or t t o volt a ge.
P er for m BODY VE RIF ICATION TE ST - VE R 1.
→ Go To 3
→ Go To 4
→ Repa ir t h e F u el Level Sen sor Gr ou n d cir cu it for a n open .
P er for m BODY VE RIF ICATION TE ST - VE R 1.
→ Repa ir t h e F u el Level Sen sor Sign a l cir cu it for a sh or t t o t h e
Sen sor Gr ou n d cir cu it .
P er for m BODY VE RIF ICATION TE ST - VE R 1.
→ Go To 5
→ Repa ir t h e F u el Level Sen sor Sign a l cir cu it for a sh or t t o gr ou n d.
P er for m BODY VE RIF ICATION TE ST - VE R 1.
→ Go To 6
→ Go To 7
→ Repa ir t h e F u el Level Sen sor Sign a l cir cu it for a n open .
P er for m BODY VE RIF ICATION TE ST - VE R 1.
Co n tin u e d
350
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