
Subsection XX (DIAGNOSTIC AND FAULT CODES)
DIAGNOSTIC AND FAULT CODES
GENERAL
FAULT CODE TABLE
PCODE
MODULE
DESCRIPTION
CAUSE
ACTION
C2109
SCM-XMR
Release valve
activation delay
exceeded
Pressure did not drop to
desired set point after
predefined delay
Release valve tube
momentary blocked
Blown valve fuse
Damaged circuit
wires or connectors
Faulty valve block
Faulty SCM
1- Go to Activations - SCM and
start Rear Test routine. If the test
passed, the system is working
properly. Check the harness and
connection to see a potential source
of intermittent dysfunction, if nothing
is found clear the occurred fault and
no more actions have to be done.
Mud, dust or water in the release
tube may explain the fault code. If
the Test status shows a Fail_release,
proceed to next action step.
2-Verify the release tube (orange)
for obstruction. If nothing is
found go to next action step.
3- Unplug the valves block connector
and measure that 12V is present
between pin D of the connector
on the SCM side and the battery
negative post. If not, verify the valve
fuse and relay (refer to schematics
for more information). Verify the
harness and the connection between
the valve and the SCM. If everything
is fine, go to next action step.
4- Verify the release valve activation
by disconnecting the valve block
electrical connector and applying
12V across pin D and H on valve
connector. If the release valve
is operating, change the SCM,
otherwise change the valve block.
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