TE S T ACTION AP PLICAB ILITY
13 Wit h th e DRBIII", select Syst em Test s, th en per for m t h e Ra il P r ess Con t r ol Va lve
Tes t .
Did t h is t est pa s s?
All
Ye s → Go To 14
No → Repla ce th e F u el P r essu r e Solen oid 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.
14 Wit h th e DRBIII", select Syst em Test s, th en per for m t h e Ra il P r ess Con t r ol Va lve
Var ia tion Test .
Did t h is t est pa s s?
All
Ye s → Go To 15
No → Repla ce th e F u el P r essu r e Solen oid 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.
15 Wit h th e DRBIII", select Syst em Test , t h en High Pr essu r e P um p.
NOTE: During this test engine speed is set at 1,400 rpm and initial fuel
pressure at approximately 6,800 psi. During the test fuel pressure is
instantly set to above 20,000 psi. to test the performance of the Fuel
In je c t io n P u mp .
NOTE: After the test is completed, the DRB display fuel pressure in 30
counter steps. If the fuel pressure increases from approximately 6,800 psi to
above 20,000 psi in one counter step, the injection pump passes the test.
Did t h e fu el pr essu r e in cr ea se to a bove 20,000 psi wit h in on e coun t er st ep on t h e
DRB?
All
Ye s → Repla ce th e Fu el Qu an t ity Solen oid in a ccor da n ce wit h t h e
Ser vice In for m a t ion .
Per for m ROAD TE ST VE RIF ICATION - VER-2.
No → Repla ce F u el Inject ion P u m p in a ccor da n ce wit h t h e Ser vice
In for m a t ion .
Per for m ROAD TE ST VE RIF ICATION - VER-2.
16 WAR N IN G: WHEN TH E EN GIN E IS OP ERATIN G, D O N OT STAN D IN A
DIR ECT LIN E WITH THE FAN . D O N OT P UT YOU R HAN D S NEAR THE
P ULLEYS , B ELTS OR FAN . D O NOT WEAR LOOS E CLOTHIN G.
NOTE: The conditions that set the DTC are not present at this time. The
fo ll o wi n g l is t ma y h e l p i n id en t i fy ing the i n t e rmi tt e nt c o nd i ti o n .
Wit h t h e en gin e r u n n in g a n d at n or m a l oper a t in g t em per a t u r e, mon it or t h e DRB III"
pa r a m et er s rela ted t o t h e DTC while wiggling th e wir ing ha r n ess. Look for pa r a m -
et er va lu es t o ch a n ge a n d/or a DTC to set .
Review t h e DTC Wh en Monit or ed a n d Set Con dit ion s. If possible, t r y to du plica t e t h e
condit ion s u n der wh ich t h e DTC wa s set .
Refer t o a n y Tech n ica l Service Bu llet in s (TSB) t h a t m a y a pply.
Visu a lly in spect t h e rela t ed wirin g h a r n ess. Look for a n y ch a fed, pier ced, pin ched, or
pa r t ia lly br oken wir es.
Visu a lly in spect t h e r ela t ed wir ing h a r n ess conn ect or s. Look for br oken , ben t , pu sh ed
out , or cor r oded t er m in a ls.
Wer e an y of t h e above condit ion s pr esen t ?
All
Ye s → Repa ir a s n ecessa ry.
Per for m ROAD TE ST VE RIF ICATION - VER-2.
No → Test Com plet e.
122
DRI V EABI LI T Y - DI ESEL
P 2015-F U EL RAIL P RES S URE MALF U NCTION MAXIMU M F U EL FLOW
EXCEED ED —
Co n t in ued
To Next Page