Aux Fan Relay Control Shorted Low (Active) - Dodge Sprinter 2006 Manual

H EAT I N G & A/C
S y m p to m :
AU X FAN RELAY CON TROL S HORTED LOW (ACTIVE)
A/C AUXILIARY FAN RE LAY
A/C AUXILIARY FAN RE LAY H IGH SIDE CONTROL CIRCUIT SH ORTE D TO GROUND
A/C AUXILIARY FAN RE LAY H IGH SIDE CONTROL CIRCUIT SH ORTE D TO GROUND CIRCUIT
AUTOMATIC TE MP E RATURE CONTROL (ATC)
A/C AUXILIARY FAN RE LAY H IGH SIDE CONTROL CKT SH ORTE D TO SE NSOR GROUND CKT
TES T
1 Tu r n t h e ign it ion off.
In st a ll a su bst it u t e r ela y in pla ce of t h e A/C Au xilia r y F a n Rela y.
N OTE: All o f th e fo llo w in g c rite ria m u s t be m e t in o rd e r to s u c c e s s fu lly ru n
th e ATC F u n c tio n Te s t.
P la ce t h e sh ift lever in P a r k.
Tu r n t h e ign it ion on .
Wit h t h e DRBIII , r ecor d a n d er a se ATC DTC's.
St a r t t h e en gin e. Allow t h e en gin e t o r ea ch n or m a l oper a t in g t em per a t u r e.
Set t h e blower t o h igh speed.
P r ess t h e Air Con dit ion in g swit ch On .
Wit h t h e DRBIII , ver ify t h a t t h e a m bien t t em per a t u r e is a bove 59°F (15°C), t h e
r efr iger a n t pr essu r e is bet ween 29 a n d 348 P SI (2 a n d 24 ba r ), t h e eva por a t or
t em per a t u r e is a bove 36.5°F (2.5°C), a n d t h e coola n t t em per a t u r e is a bove 158°F
(70°C).
Wit h t h e DRBIII in Au t om a t ic Tem per a t u r e Con t r ol (ATC), select Syst em Test s a n d
select ATC F u n ct ion Test . Wh en t h e ATC F u n ct ion Test is com plet e, pr oceed a s
follows:
Wit h t h e DRBIII , r ea d t h e a ct ive ATC DTCs.
Does t h e DRBIII displa y: AUX FAN RE LAY CONTROL SH ORTE D LOW?
Yes
No
2 Tu r n t h e ign it ion off.
Rem ove t h e su bst it u t e A/C Au xilia r y F a n Rela y fr om t h e r ela y cen t er.
Discon n ect t h e Au t om a t ic Tem per a t u r e Con t r ol (ATC) C1 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 A/C Au xilia r y F a n Rela y H igh Side
Con t r ol cir cu it .
Is t h e r esist a n ce below 10K oh m s?
Yes
No
P OS S IB LE CAU S ES
ACTION
→ Go To 2
→ Repla ce t h e or igin a l A/C Au xilia r y F a n Rela y in a ccor da n ce wit h
t h e Ser vice In for m a t ion .
P er for m BODY VE RIF ICATION TE ST - VE R 1.
→ Repa ir t h e A/C Au xilia r y F a n Rela y H igh Side Con t r ol cir cu it for
a sh or t t o gr ou n d. Rein st a ll t h e or igin a l A/C Au xilia r y F a n Rela y.
P er for m BODY VE RIF ICATION TE ST - VE R 1.
→ Go To 3
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