TE S T ACTION AP PLICAB ILITY
3 Tur n th e ign it ion on .
Wit h th e DRBIII",eraseECMDTCs.
Tur n th e ign it ion off.
In st all a su bst it u t e r ela y in pla ce of t h e En gin e Con tr ol Rela y.
Per for m sever a l ign it ion k ey cycles, pa u sin g for a t lea st 10 secon ds bet ween each
cycle.
Tur n th e ign it ion on .
Wit h th e DRB, r ea d E CM DTCs.
Did t h is DTC set a ga in ?
All
Ye s → Go To 4
No → Repla ce th e En gin e Con t r ol Rela y.
Per for m ROAD TE ST VE RIF ICATION - VER-2.
4 Tur n th e ign it ion off.
Rem ove t h e E ngin e Con t r ol Rela y.
Discon n ect t he E CM ha r n ess con n ect or s.
Mea su r e t h e resist a n ce of t h e En gin e Con t r ol Rela y Con tr ol circu it wh ile wigglin g
th e wir in g h a r n ess a n d con n ect or s bet ween th e ECM an d t h e Fu se Block #1.
Wa s t h e resist a n ce a bove 10.0 ohm s at an y tim e while wigglin g t h e wir in g h a r n ess
an d con n ect or s?
All
Ye s → Repa ir t h e En gin e Cont r ol Rela y Con t r ol cir cu it for an in ter m it -
ten t open .
Per for m ROAD TE ST VE RIF ICATION - VER-2.
No → Repla ce an d pr ogr a m t h e E ngin e Con t r ol Modu le in a ccor da n ce
wit h th e Ser vice In for m a t ion .
Per for m ROAD TE ST VE RIF ICATION - VER-2.
5 WARN IN G: WHEN THE E N 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 t n or m a l oper a t in g t em per a t u r e, m onit or t h e DRB
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.
90
DRI V EABI LI T Y - DI ESEL
P 1610-ENGIN E CON TROL RELAY S HUTS OF F TOO EARLY — Co n t in ued
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