Dodge Sprinter 2006 - Circ Pump Control High or Open (Active)

Symptom:
CIRC PU MP CON TR OL H IGH OR OPE N (ACTIVE )
POSSIBLE CAUSES
CIRCU LATI ON P U MP
CIRCULATION P UMP CONTROL CIRCUIT SH ORTE D TO VOLTAGE
AUTOMATIC TE MPE RATURE CONTROL (ATC)
CIRCU LATI ON P U MP CON TROL CI RCUI T OP E N
GROU ND CI RCUI T OP E N
AUTOMATIC TE MPE RATURE CONTROL (ATC)
TE S T ACTION AP PLICAB ILITY
1 Tur n th e ign it ion off.
Pr ess t h e Residu a l E n gin e Hea t Ut iliza t ion (RE ST) swit ch off.
NOTE: Ch e c k c o n n e c to rs - Cle an /re pa i r a s n e c e ss a ry.
Discon n ect t he Cir cu la t ion P u m p ha r n ess con n ect or.
Con n ect a 12-volt t est ligh t bet ween th e Cir cula t ion P u mp Con t r ol cir cu it a n d t h e
Gr ou n d cir cu it in t h e Cir cu la t ion Pu m p h a r n ess con n ect or. Th e t est ligh t sh ou ld
oper a t e as follows:
Wit h t h e Residu a l E n gin e H ea t Utiliza tion (RE ST) swit ch off, th e t est ligh t sh ou ld
not illu m in a t e.
Pr ess t h e Residua l E n gin e H ea t Ut iliza t ion (RE ST) swit ch on. Th e t est ligh t sh ou ld
illuminate b rightly.
Does t h e test ligh t fu n ct ion as specified?
All
Yes, Ligh t On ly Illu m in a t es Wit h REST On
Repla ce t h e Cir cu la t ion Pu m p in a ccor da n ce wit h t h e Ser vice
In for m a t ion .
Per for m BODY VERIFICATION TE ST - VE R 1.
No, Ligh t Illu m in a t es Wit h RE ST Off
Go To 2
No, Ligh t Will N ot Illu m in a t e
Go To 3
2 Tur n th e ign it ion off.
NOTE: Ch e c k c o n n e c to rs - Cle an /re pa i r a s n e c e ss a ry.
Discon n ect t he Cir cu la t ion P u m p ha r n ess con n ect or.
Discon n ect t he Aut om a t ic Tem pera t u r e Con t r ol (ATC) C1 ha r n ess conn ect or.
Tur n th e ign it ion on .
Mea su r e th e volt a ge of th e Cir cu la t ion Pu m p Con t r ol cir cu it.
Is t h e volt a ge above 0.2 volt s?
All
Ye s → Repa ir th e Cir cu la t ion P u m p Con t r ol cir cu it for a sh or t to volt a ge.
Per for m BODY VERIFICATION TE ST - VE R 1.
No → Repla ce th e Aut om a t ic Tem pera t u r e Cont r ol (ATC) in a ccorda n ce
wit h th e Ser vice In for m a t ion .
Per for m BODY VERIFICATION TE ST - VE R 1.
152
HEAT IN G & A/C