Air spring
valve,
repeated or
frequent level
activity in the
down direction
Corner valve stuck
open
Corner valve leak to
gallery
Refer to the approved diagnostic system for corner valve checks.
C113066
Air spring air
supply,
repeated or
frequent level
activity in the
up direction
Air spring leak
Air harness leak
Corner valve leak to
gallery
Exhaust valve stuck
open
Visually inspect the system for air leakage. Refer to the guided
diagnostic routine for this code on the approved diagnostic
system.
C11307A
Air spring air
supply, unable
to lift
Detached air pipe
Loose or burst air
pipe
Excessive air spring
leak
Height sensor stuck
Height sensor failure
Blockage in air
harness
Visually inspect the system for an excessive air leak. Check the
height sensor linkage(s) for damage/restrictions. Visually inspect
the air harness for evidence of melting, crushing, kinking or
collapsing. Refer to the guided diagnostic routine for this code on
the approved diagnostic system.
C113192
Air supply,
unable to
pressurize
gallery
Insufficient pressure
from compressor
Detached air pipe
Loose or burst air
pipe
Reservoir valve
block pipes
incorrectly fitted
(unions reversed)
Pressure sensor
fault
Visually inspect the system for air leakage. Check the reservoir
valve block pipes for correct routing and installation.
C1A001C
Battery voltage
out of range
(too low to
operate air
suspension)
Low battery voltage
One or more valve
supplies: intermittent
short circuit to
ground
Check the battery charge and condition. Refer to the guided
diagnostic routine for this code on the approved diagnostic
system.
C1A001D
Isolation
switch current
monitor
One or more valve
supplies: short
circuit to ground
Rear valve block
disconnected
Air suspension
control module
failure
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. Refer to the warranty policy and
procedures manual if a module is suspect.
C1A0049
Air suspension
control module
failure
Water ingress to
valve wiring harness
or connector(s)
Valve supply
circuit(s): short
circuit to power
Air suspension
control module,
internal electrical
failure
Visually inspect the wiring harness and connectors for water
ingress. Refer to the guided diagnostic routine for this code on
the approved diagnostic system. Refer to the warranty policy and
procedures manual if a module is suspect.
This is not a fault,