Symptom List:
P 2511-EGR VALVE SIGN AL CIRCU IT S HORTED TO GROU ND
P 2527-EGR VALVE SIGN AL CIRCU IT OP EN CIRCU IT
P 2527-EGR VALVE SIGN AL CIRCU IT SHORTED TO GROU ND
Te s t N o t e : Al l s y m p t o m s l i s t e d a b o v e a r e d i a g n o s e d u s i n g t h e s a m e t e s t s .
Th e title fo r th e te sts w ill be P 2511-EGR VALVE SIGN AL
CIRCU IT S H ORTE D TO GROU N D .
POSSIBLE CAUSES
CH E CKIN G TH E E NGIN E CONTROL RE LAY S YSTE M
INTERMITTENT CONDITION
ENGINE CONTROL RELAY OUTPUT CIRCUIT OPEN
EGR VALVE CONTROL CIRCUIT SH ORTE D TO GROUND
EGR VALVE CONTROL CIRCUIT OP E N
EGR SOLENOID
ENGINE CONTROL MODULE
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.
Tur n th e ign it ion on .
Wit h th e DRB, er a se E CM DTCs.
Per for m sever a l ign it ion cycles, t u r n in g th e ign it ion off for a t lea st 10 seconds
bet ween ea ch i gn it ion cycle.
Mon it or th e DRB for ECM DTCs.
Did t h is DTC set a ga in ?
All
Ye s → Go To 2
No → Go To 8
2 NOTE: Check the ECM for other ECM DTC’s related to circuits that are
open, shorted to ground or low voltage problems.
Does t h e DRB a lso displa y t h ese type of DTC’s?
All
Ye s → Go To 3
No → Go To 4
218
DRI V EABI LI T Y - DI ESEL