Dodge Sprinter 2006 - Page 632

Symptom:
P 2351-ECM S U P P LY VOLTAGE TOO LOW
POSSIBLE CAUSES
ECM
ECM IGNITION CIRCUIT OPEN
STARTE R OR LIFT PU MP RE LAY CIRCUIT(S) SH ORTE D TO GROUND
INTERMITTENT CONDITION
TE S T ACTION AP PLICAB ILITY
1 NOTE: If the ECM detects and stores a DTC, the ECM also stores the
e n gi n e /ve h ic le o p e ra ti n g c o n d i tio n s u n d e r w h ic h th e D TC w a s s e t. S o m e o f
these conditions are displayed on the DRB at the same time the DTC is
displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to
duplicate these conditions may assist when checking for an active DTC.
Tur n th e ign it ion on .
Wit h th e DRB, er a se E CM DTCs.
Tur n th e ign it ion off for 10 secon ds.
Test drive th e veh icle.
Mon it or th e DRB for ECM DTCs.
Did t h is DTC set a ga in ?
All
Ye s → Go To 2
No → Go To 4
2 Tur n th e ign it ion off.
Discon n ect t he E CM ha r n ess con n ect or s.
Rem ove t h e St a r t er Rela y a n d discon n ect th e Fu el Lift P u m p ha r n ess con n ect or
Mea su r e th e resista n ce between gr ou n d a n d t h e St a r t er Rela y cont r ol cir cu it .
Mea su r e t h e r esist a n ce bet ween gr ou n d an d th e F u el Lift P u m p Rela y cont r ol cir cu it .
Did bot h cir cu its m ea su r e above 1000 oh m s?
All
Ye s → Go To 3
No → Repa ir t h e r ela y con t rol cir cu it (s) t h a t did n ot m ea sur e a bove
1000 oh m s for a sh or t to grou n d.
Per for m ROAD TE ST VE RIF ICATION - VER-2.
3 Tur n th e ign it ion off.
Discon n ect t he E CM ha r n ess con n ect or s.
Usin g th e Ser vice Wir in g In for m a t ion det er m ine wh ich cir cu it s in t h e ECM h a r ness
conn ect or pr ovide Ign it ion Swit ch power t o t h e ECM.
Tur n th e ign it ion on .
Usin g a 12-volt t est ligh t con n ect ed t o gr oun d, ch eck ea ch Ign it ion Switch Out pu t
cir cu it s in t he E CM h a r n ess con n ect or s.
Does t h e test ligh t illu min a t e br igh t ly for ea ch circu it?
All
Ye s → Repla ce th e E CM in a ccor da n ce with t h e Ser vice In for m a t ion .
Per for m ROAD TE ST VE RIF ICATION - VER-2.
No → Repa ir th e Ignit ion Su pply cir cu it as n ecessa r y.
Per for m ROAD TE ST VE RIF ICATION - VER-2.
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DRI V EABI LI T Y - DI ESEL