Symptom:
P 2306-S EN S OR S UP P LY 2 VOLTAGE IS TOO HIGH
POSSIBLE CAUSES
BOOST P RE SSU RE SE N SOR
FUEL PRESSURE SENSOR
VISUAL WIRIN G AN D CON NE CTOR INSP E CTION
INTERMITTENT CONDITION
SE NSOR SUP P LY VOLTAGE 2 SH ORTE D TO VOLTAGE
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.
Tur n th e ign it ion on .
Wit h th e DRB, er a se E CM DTCs.
Tur n th e ign it ion off for 10 secon ds.
Star t t he engine.
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 6
2 Tur n th e ign it ion off.
Visu a lly inspect t h e wir in g a n d con n ect or s associa t ed wit h th e Boost P r essu r e Sen sor
an d F u el P r essu r e Sen sor for pr oblem s t h a t ma y r esu lt in a sh ort cir cu it .
Wer e an y pr oblem s fou n d?
All
Ye s → Repa ir or repla ce wirin g/con n ect ors a s n ecessa r y.
Per for m ROAD TE ST VE RIF ICATION - VER-2.
No → Go To 3
3 Tur n th e ign it ion off.
Discon n ect t h e Boost Pr essu r e Sen sor a n d F u el Pr essu r e Sen sor ha r n ess conn ect or s.
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 in F use Block No.1.
Tur n th e ign it ion on .
Mea su r e th e volt a ge at a ll cir cu it s in th e Fu el P r essu r e Sen sor a n d Boost P r essu r e
Sen sor ha r n ess con n ect or ca vit ies.
Is t h e volt a ge above 1.0 volt for an y of t h e mea su rem en t s?
All
Ye s → Repa ir t h e cir cu it (s) t h a t m ea su r ed above 1.0 volt for a sh or t t o
volt a ge.
Per for m ROAD TE ST VE RIF ICATION - VER-2.
No → Go To 4
198
DRI V EABI LI T Y - DI ESEL