Section 03 ELECTRONIC MANAGEMENT SYSTEMS
Subsection 04 (COMMUNICATION TOOLS)
vdd2006-001-151_b
MPI-2 CARD
CAN
USB
vmr2016-128-001_a
MPI-3 CARD
Prerequisite for USB Communication:
– Computer turned ON
– MPI connected to PC computer.
COMMUNIC
ATION PROBLEM (USB)
STATUS WHAT TO DO
USB
Light is
OFF
– Check USB connection
between MPI card
and PC computer.
– Check USB operation on computer
(hardware or Windo w s drive rs ).
USB
Light is
GREEN
– Connections are GOOD.
Communication can tak e place on
USB side.
Prerequisite for CAN Communication:
1. MPI card connected to diagnostic connector.
2. The tether cord cap (D.E.S.S. key) is installed on
the engine cut-off switch.
3. BUDS2 started and logged.
4. ECM is powered.
COMMUNICATION
PROBLEM (CAN)
STATUS WHAT TO DO
CAN
Light is
OFF
– BUDS2 does not communicate with
the vehicle.
– Check connections from computer to
vehicle.
– Check if BUDS2. is started.
– Check if vehicle is powered: is cluster
turnedON?IfitisnotON,installthe
tether cord cap (D.E.S.S. key) on the
engine cut-off switch.
CAN
Light is
RED
This occurs when BUDS2 looses
communication with vehicle.
– Check connections from computer to
vehicle.
– Check if vehicle is powered: is cluster
turned ON? If not, install the tether
cord cap (D.E.S.S. key) on the engine
cut-off switch.
CAN
Light is
GREEN
– Connections are GOOD.
BUDS2 communicates normally
with the vehicle.
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