TE S T ACTION AP PLICAB ILITY
1 NOTE: If DTC P1611, P2306 or P2332 is present with this DTC, diagnose
DTCs P1611, P2306 or P2332 before diagnosing this DTC.
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.
NOTE: The APP Sensor is a device that contains 2 separate potentiometer
ty p e s e n s o rs . Ea c h s e n s or h a s its ow n 5-v o lt su p ply c irc u i t, se n s o r g ro u n d
ci rc u it a n d si g n a l c irc u it . Th e AP P Se n s o r n o lo n ge r in c o rp o ra te s a lo w -id le
switch.
NOTE: Th e AP P S e n s o r 2 s ig n a l s h o u ld alw a y s be a p p ro x im at e ly 1/2 th e
voltage of the APP Sensor 1 signal.
Tur n th e ign it ion on .
Usin g a volt m et er, ba ckpr obe th e APP Sensor 1 a n d AP P Sen sor 2 Sign a l cir cuit s a t
th e APP Sen sor h ar n ess con n ect or wit h t h e accelera t or peda l in t h e a t r est posit ion.
Is th e volt a ge bet ween 0.28 a n d 0.37 volt for sen sor 1 a n d 0.10 a n d 0.19 volt for sen sor
2?
All
Ye s → Go To 2
No → Go To 5
2 Tur n th e ign it ion on .
Fu lly depr ess t h e a cceler a t or peda l.
Usin g a voltm et er ba ckpr obe th e AP P Sen sor h a r ness con n ect or a n d r ea d t h e volt a ge
for AP P Sen sor 1 an d AP P Sen sor 2 Sign a l cir cu it s.
Is t h e volt a ge bet ween 4.45 a n d 4.75 volt s for #1 an d 2.15 an d 2.45 volt s for #2?
All
Ye s → Go To 3
No → Go To 5
3 Tur n th e ign it ion on .
Wit h th e DRB, r ea d t h e AP P Sen sor 1 a n d AP P Sen sor 2 per cen t a ges (%).
Wit h th e acceler a t or peda l in t h e idle posit ion , slowly depr ess t h e acceler a t or peda l
un t il th e peda l is fu lly depr essed.
NOTE: The percentage readings for APP Sensors 1 and 2 should increase
smoothly as the pedal is depressed.
NOTE: This test can also performed using a voltmeter by back probing each
APP Sensor Si gnal ci r cuit at t he APP Sensor h ar n ess connector an d
observing the voltmeter for a smooth voltage change through the entire
pedal travel.
Does t h e per cen t age (volta ge) in cr ea se sm oot h ly for bot h r ea din gs wit h th e acceler-
at or peda l t r a vel?
All
Ye s → Go To 4
No → Repla ce t h e Acceler a t or P eda l Posit ion Sen sor in a ccor da n ce wit h
th e Ser vice In form a t ion .
Per for m ROAD TE ST VE RIF ICATION - VER-2.
74
DRI V EABI LI T Y - DI ESEL
P 1222-ACC P EDAL P OS ITION SENS OR 1 CKT P LAU SIB ILITY — Co n t in ued
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