TE S T ACTION AP PLICAB ILITY
15 Tur n th e ign it ion off.
Discon n ect t he MAF Sen sor h a r n ess con n ect or.
Discon n ect t he E CM ha r n ess con n ect or s.
Rem ove t h e E ngin e Con t r ol Rela y.
Con n ect a ju mper wir e bet ween ca vit y 30 a n d ca vit y 87 of t h e En gin e Con t r ol Rela y
conn ect or.
Tur n th e ign it ion on .
Mea su r e t h e volt a ge of t h e MAF Sen sor 5 Volt Su pply cir cu it in t h e E CM ha r n ess
conn ect or.
Is t h e volt a ge above 1.0 volt ?
All
Ye s → Repa ir t h e MAF Sen sor 5 Volt Su pply cir cuit for a sh or t t o volt a ge.
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.
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 he en gin e r u n n in g an d a t n orm a l oper a t in g t em per a t u r e, mon it 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.
24
DRI V EABI LI T Y - DI ESEL
P 0100-MAS S AIR F LOW S EN SOR S IGN AL VOLTAGE TOO LOW —
Co n t in ued
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