Symptom:
PUMP MOTOR
Wh e n Mo n i to re d a n d S e t Co n d it i o n :
PUMP MOTOR
Wh en Mon it or ed: Ign it ion On - Con t inu ou sly
Set Con dition : Wh en t h e pu m p m ot or volta ge is not pr esen t a ft er en a blin g t he pu m p
mot or r ela y OR pum p m ot or h as volt age wh en t h e pu m p mot or r ela y is disa bled OR pu m p
mot or slow down t est fa ils OR pu m p m ot or r ela y does n ot t u r n on com plet ely.
POSSIBLE CAUSES
INTERMITTENT PUMP MOTOR DTC
DAMAGE D CAB/CAB HARN E SS CONNE CTOR
FUSE D OPTIONAL E QU IP ME NT RE LAY OUTP U T CIRCU IT OP EN
FUSE D B(+) CIRCUIT OP EN
GROU ND CI RCUI T OP E N
PUMP MOTOR
TE S T ACTION AP PLICAB ILITY
1 NOTE: If a system undervoltage or overvoltage DTC is set along with this
DTC, diagnose the system voltage DTC first.
Tur n th e ign it ion on .
Wit h th e DRBIII",readDTCs.
Wit h th e DRBIII",eraseDTCs.
Tur n th e ign it ion off.
Tur n th e ign it ion on .
Wit h th e DRBIII",readDTCs.
Does t h e DRBIII" display P UMP MOTOR?
All
Ye s → Go To 4
No → Go To 2
2 Tur n th e ign it ion off.
Tur n th e ign it ion on .
Wit h th e DRBIII", a ct u a te t h e Pu m p Mot or.
Is t h e Pu m p Mot or ru n n in g?
All
Ye s → Go To 3
No → Go To 4
57
BRAK ES (CAB)