Symptom:
P 2521-IMP ROP ER START ATTEMP T
POSSIBLE CAUSES
VERIF Y ACTIVE DTC
ENGINE CONTROL MODULE
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.
NOTE: This DTC indicates that engine rotation has occurred without an
ignition sw itch Start input. This can occurred w hen an attempt to start the
vehicle using a push start method.
NOTE: Consult with the customer to determine if a push start has been
attempted.
Tur n th e ign it ion on .
Wit h th e DRBIII",eraseECMDTCs.
Per for m sever a l en gin e r u n cycles, tu r nin g th e ign ition off for a t lea st 20 secon ds
bet ween ea ch en gine r u n cycle.
Wit h th e DRBIII",readtheECMDTCs.
Did t h is DTC set a ga in ?
All
Ye s → Repla ce a nd pr ogr a m t h e En gin 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.
No → Test complet e.
Per for m ROAD TE ST VE RIF ICATION - VER-2.
224
DRI V EABI LI T Y - DI ESEL
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