Symptom:
NO COMMUNICATION WITH BUS
Wh e n Mo n i to re d a n d S e t Co n d it i o n :
NO COMMUNICATION WITH BUS
Wh en Mon it or ed: Ign it ion On - Con t inu ou sly
Set Con dition : Wh en t h e CAB fa ils t o receive all m odu le m essa ges.
POSSIBLE CAUSES
CAN CIRCUITS SH ORTE D TO VOLTAGE
MODULE SH ORT TO VOLTAGE
CAN CIRCUITS SH ORTE D TO GROUND
MODU LE SH ORT TO GROU N D
CAN CIRCUITS SH ORTE D TOGE TH ER
ENGINE CONTROL MODULE
SENTRY KEY REMOTE ENTRY MODULE
TE S T ACTION AP PLICAB ILITY
1 Tur n th e ign it ion off.
Discon n ect t he In st r u m en t Clu st er ha r n ess con n ect or s.
Tur n th e ign it ion on .
Mea su r e th e volt a ge bet ween CAN C Bu s (+) cir cuit an d gr ou n d.
Mea su r e th e volt a ge bet ween CAN C Bu s (-) cir cu it an d gr ou n d.
Is t h e volt a ge above 3.0 volt s on eit h er cir cu it ?
All
Ye s → Go To 2
No → Go To 3
49
BRAK ES (CAB)
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