No Response From Heater Booster Module - Dodge Sprinter 2006 Manual

COM M U N I CAT I ON
S y m p to m :
*N O RES P ON S E F ROM HEATER B OOS TER MOD U LE
CH E CK P OWE RS AND GROUNDS TO TH E H E ATE R BOOSTE R MODULE
MODULE - INTE RNAL SH ORT TO GROUND
K-IC, ATC, H BM, CH M CIRCUIT SH ORTE D TO GROUND
MODULE - INTE RNAL SH ORT TO VOLTAGE
K-IC, ATC, H BM, CH M CIRCUIT SH ORTE D TO VOLTAGE
K-IC, ATC, H BM, CH M CIRCUIT OP E N
H E ATE R BOOSTE R MODULE
TES T
1 Tu r n t h e ign it ion off.
Discon n ect t h e H ea t er Boost er Modu le h a r n ess con n ect or.
Ch eck ea ch power a n d gr ou n d cir cu it t o t h e m odu le.
Wer e a n y pr oblem s fou n d?
Yes
No
2 Tu r n t h e ign it ion off.
Discon n ect t h e H ea t er Boost er Modu le h a r n ess con n ect or.
Discon n ect t h e DRBIII fr om t h e DLC.
Mea su r e t h e r esist a n ce bet ween gr ou n d a n d t h e K-IC, ATC, H BM, CH M cir cu it .
Is t h e r esist a n ce below 5.0 oh m s?
Yes
No
3 Tu r n t h e ign it ion off.
Discon n ect t h e H ea t er Boost er 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 K-IC, ATC, H BM, CH M cir cu it .
Wh ile m on it or in g t h e oh m m et er, discon n ect ea ch m odu le (IC, ATC, CH M) on e a t a
t im e.
N OTE: Th e v e h ic le m a y n o t be e qu ip p e d w ith a ll th e a bo v e m o d u le s .
Is t h e r esist a n ce below 5.0 oh m s wit h a ll t h e a bove m odu les discon n ect ed?
Yes
No
P OS S IB LE CAU S ES
ACTION
→ Refer t o t h e wir in g dia gr a m s loca t ed in t h e ser vice in for m a t ion t o
h elp isola t e a n open or sh or t ed con dit ion . Repa ir a s n ecessa r y.
P er for m BODY VE RIF ICATION TE ST - VE R 1.
→ Go To 2
→ Go To 3
→ Go To 4
→ Repa ir t h e K-IC, ATC, H BM, CH M 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.
→ Repla ce t h e Modu le, t h a t wh en discon n ect ed t h e sh or t wa s
elim in a t ed, 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.
114
AP P LICAB ILITY
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