Section 07 BODY AND HULL
Subsection 01 (SUSPENSION (iS))
DIAGNOSTIC FLOW CHARTS
Suspension does not move
Suspension
moves?
Replace
hydraulic
pump
YES
YES
YES
YES
NO
NO
NO
NO
NO
Check CAN
bus
System is ok
YES
NO
iS Electrical Troubleshooting
Can you see iS display?
Check for
hydraulic
or mechanical
problem, see is
hydraulic/mechanical
troubleshooting
flow chart
Can you hear the
hydraulic pump running
when pressing iS button(s)
on steering?
Install the latest
version of B.U.D.S.
softward and
check fault codes
Is there a
fault code?
Follow service
action
In B.U.D.S. activation
page, activate iS UP
and iS DOWN
buttons
Suspension moves?
Check the
suspension position
sensor and
the iS buttons
Suspension
moves? *
YES
System is ok
Perform hydraulic
pump operation test
Hydraulic pump
can be activated?
NO
YES
YES
NO
System is OK
Perform iS
module test
Suspension
moves?
YES
NO
System is ok
Suspension
moves?
* If all input voltage tests good but suspension
does not activate with switches but does with
B.U.D.S., suspect gauge issue.
smr2009-041-100_en
smr2009-041 443
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