| DTC |
Description |
Possible causes |
Action |
| B1A8455 |
Car Configuration Data |
- Data does not match that expected for VIN range/Air suspension
incorrectly configured
|
Configure the car configuration file (CCF) using the
approved diagnostic system. Clear the DTC and test for normal operation.
|
| C112201 |
Steering Isolation Valve |
- Servotronic steering valve disconnected
- Servotronic steering valve circuit(s) high resistance or short
circuit to ground
- Servotronic steering valve fault
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| C11231C |
Steering Isolation Valve Supply Circuit |
- Servotronic steering valve supply circuit high resistance
- Servotronic steering valve supply circuit short circuit to ground
- Servotronic steering valve supply circuit short circuit to power
- Servotronic steering valve fault
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| C112F72 |
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
- Exhaust valve stuck open
- Corner valve leak to gallery
|
Visually inspect the system for air leakage. Refer to the
guided diagnostic routine for this code on the approved diagnostic system.
|
| C11307A |
Air Spring Sir Supply |
- Unable to lift vehicle
- 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 Spring Air Supply |
- Unable to pressurize gallery
- Insufficient pressure from compressor
- Detached air pipe
- Loose or burst air pipe
- Reservoir valve block pipes incorrectly installed (unions reversed)
- Pressure sensor fault
|
Visually inspect the system for air leakage. Check the
reservoir valve block pipes for correct routing and installation. |
| C1A001C |
Control Module |
- A momentary low voltage event occurred
- Low battery voltage
- One or more control valve supplies intermittent short circuit to
ground
|
Check the battery charge, condition and circuit. Refer to
the guided diagnostic routine for this code on the approved diagnostic
system. |
| C1A001D |
Control Module |
- 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 |
Control Module |
- 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. |
| C1A0053 |
Control Module |
- This is not a fault, the system has been deflated using the
diagnostic routine
|
Carry out Air suspension deflation exit routine using the
approved diagnostic system or the routine listed at the end of this
section. |
| C1A0054 |
Control Module |
- Air suspension control module not calibrated
- Air suspension control module has been set into manufacturing,
calibration or tight tolerance mode
|
If the problem is found during pre-delivery inspection,
check that the air suspension control module (RLM) is NOT in manufacturing
mode, calibration mode or tight tolerance mode using the approved
diagnostic system. Configure the RLM to customer mode if necessary (tight
tolerance mode and manufacturing mode can be set/cleared by starting then
ending the suspension geometry set process from IDS menu. Refer to the
relevant Technical Service Bulletin). Clear the DTC and test for normal
operation. Only if the DTC re-occurs, should the system be calibrated
using the approved diagnostic system. Clear the DTC and test for normal
operation. |
| C1A0119 |
LED |
- Switch pack LED circuit, short circuit to power
- One or more LEDs short circuit to each other
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| C1A031C |
Left Front Height Sensor |
- Left-hand front height sensor signal voltage out of range
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor linkage damaged/bent
- Height sensor disconnected
- Height sensor linkage toggled (now operating in reverse direction)
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Height sensor installed on wrong side of vehicle
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Incorrect height calibration
- Air suspension control module failure
|
Visually inspect the wiring harness and connectors for water
ingress. For height sensor linkage, mounting and circuit tests refer to
the guided diagnostic routine on the approved diagnostic system. Check the
height sensor bracket condition and security. Check the height sensor for
correct installation and torque of fixings. If any height sensor fixings
are slackened or found to be loose, or a height sensor has been changed,
the vehicle ride height must be re-calibrated. Calibrate the system using
the approved diagnostic system. Refer to the warranty policy and
procedures manual if a module is suspect. |
| C1A0326 |
Left Front Height Sensor |
- Left-hand front height sensor signal voltage stuck whilst vehicle is
driven
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Air suspension control module 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. |
| C1A0329 |
Left Front Height Sensor |
- Left-hand front height sensor signal invalid
- Water ingress to wiring harness or connectors
- Height sensor linkage damaged/bent
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Incorrect height calibration process
|
Visually inspect the wiring harness and connectors for water
ingress. Refer to the guided diagnostic routine for this code on the
approved diagnostic system. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
|
| C1A0392 |
Left Front Height Sensor |
- Left-hand front height sensor height changing slower than expected
- Suspension prevented from moving
- Height sensor incorrectly installed
- Air spring leak
- Air harness leak
- Blocked/damaged air harness
- Blocked/damaged gallery pipe
- Corner valve stuck closed
- Front or rear valve block pipes incorrectly installed (unions
reversed)
- Reservoir valve block pipes incorrectly installed (unions reversed)
- Reservoir valve stuck open
- Exhaust valve stuck closed
- Corner valve air leak
- Pressure sensor fault
- Height sensor failure
|
Check that the vehicle is free of obstructions. Check the
height sensor for correct installation and torque of fixings. If any
height sensor fixings are slackened or found to be loose, or a height
sensor has been changed, the vehicle ride height must be re-calibrated.
Calibrate the system using the approved diagnostic system. Refer to the
guided diagnostic routine for this code on the approved diagnostic system.
Check for an air spring leak. Check the air harness for evidence of
melting, crushing, kinking or collapsing. Check the front and rear valve
block pipes for correct routing and installation. Check the reservoir
valve block pipes for correct routing and installation. Refer to the
approved diagnostic system for corner, reservoir and exhaust valve checks.
Check the corner valve for leaks. |
| C1A041C |
Right Front Height Sensor |
- Right-hand front height sensor signal voltage out of range
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor linkage damaged/bent
- Height sensor disconnected
- Height sensor linkage toggled (now operating in reverse direction)
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Height sensor installed on wrong side of vehicle
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Incorrect height calibration
- Air suspension control module 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. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
Refer to the warranty policy and procedures manual if a module is suspect.
|
| C1A0426 |
Right Front Height Sensor |
- Right-hand front height sensor signal voltage stuck whilst vehicle
is driven
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Air suspension control module 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. |
| C1A0429 |
Right Front Height Sensor |
- Right-hand front height sensor signal invalid:
- Water ingress to wiring harness or connectors
- Height sensor linkage damaged/bent
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Incorrect height calibration process
|
Visually inspect the wiring harness and connectors for water
ingress. Refer to the guided diagnostic routine for this code on the
approved diagnostic system. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
|
| C1A0492 |
Right Front Height Sensor |
- Right-hand front height sensor height changing slower than expected
- Suspension prevented from moving
- Height sensor incorrectly installed
- Air spring leak
- Air harness leak
- Blocked/damaged air harness
- Blocked/damaged gallery pipe
- Corner valve stuck closed
- Front or rear valve block pipes incorrectly installed (unions
reversed)
- Reservoir valve block pipes incorrectly installed (unions reversed)
- Reservoir valve stuck open
- Exhaust valve stuck closed
- Corner valve air leak
- Pressure sensor fault
- Height sensor failure
|
Check that the vehicle is free of obstructions. Check the
height sensor for correct installation and torque of fixings. If any
height sensor fixings are slackened or found to be loose, or a height
sensor has been changed, the vehicle ride height must be re-calibrated.
Calibrate the system using the approved diagnostic system. Refer to the
guided diagnostic routine for this code on the approved diagnostic system.
Check for an air spring leak. Check the air harness for evidence of
melting, crushing, kinking or collapsing. Check the front and rear valve
block pipes for correct routing and installation. Check the reservoir
valve block pipes for correct routing and installation. Refer to the
approved diagnostic system for corner, reservoir and exhaust valve checks.
Check the corner valve for leaks. |
| C1A051C |
Left Rear Height Sensor |
- Left-hand rear height sensor signal voltage out of range
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor linkage damaged/bent
- Height sensor disconnected
- Height sensor linkage toggled (now operating in reverse direction)
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Height sensor installed on wrong side of vehicle
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Incorrect height calibration
- Air suspension control module 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. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
Refer to the warranty policy and procedures manual if a module is suspect.
|
| C1A0526 |
Left Rear Height Sensor |
- Left-hand rear height sensor signal voltage stuck whilst vehicle is
driven
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Air suspension control module 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. |
| C1A0529 |
Left Rear Height Sensor |
- Left-hand rear height sensor signal invalid
- Water ingress to wiring harness or connectors
- Height sensor linkage damaged/bent
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Incorrect height calibration process
|
Visually inspect the wiring harness and connectors for water
ingress. Refer to the guided diagnostic routine for this code on the
approved diagnostic system. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
|
| C1A0592 |
Left Rear Height Sensor |
- Left-hand rear height sensor height changing slower than expected
- Suspension prevented from moving
- Height sensor incorrectly installed
- Air spring leak
- Air harness leak
- Blocked/damaged air harness
- Blocked/damaged gallery pipe
- Corner valve stuck closed
- Front or rear valve block pipes incorrectly installed (unions
reversed)
- Reservoir valve block pipes incorrectly installed (unions reversed)
- Reservoir valve stuck open
- Exhaust valve stuck closed
- Corner valve air leak
- Pressure sensor fault
- Height sensor failure
|
Check that the vehicle is free of obstructions. Check the
height sensor for correct installation and torque of fixings. If any
height sensor fixings are slackened or found to be loose, or a height
sensor has been changed, the vehicle ride height must be re-calibrated.
Calibrate the system using the approved diagnostic system. Refer to the
guided diagnostic routine for this code on the approved diagnostic system.
Check for an air spring leak. Check the air harness for evidence of
melting, crushing, kinking or collapsing. Check the front and rear valve
block pipes for correct routing and installation. Check the reservoir
valve block pipes for correct routing and installation. Refer to the
approved diagnostic system for corner, reservoir and exhaust valve checks.
Check the corner valve for leaks. |
| C1A061C |
Right Rear Height Sensor |
- Right-hand rear height sensor signal voltage out of range
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor linkage damaged/bent
- Height sensor disconnected
- Height sensor linkage toggled (now operating in reverse direction)
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Height sensor installed on wrong side of vehicle
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Incorrect height calibration
- Air suspension control module 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. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
Refer to the warranty policy and procedures manual if a module is suspect.
|
| C1A0626 |
Right Rear Height Sensor |
- Right-hand rear height sensor signal voltage stuck whilst vehicle is
driven
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Air suspension control module 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. |
| C1A0629 |
Right Rear Height Sensor |
- Right-hand rear height sensor signal invalid
- Water ingress to wiring harness or connectors
- Height sensor linkage damaged/bent
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Incorrect height calibration process
|
Visually inspect the wiring harness and connectors for water
ingress. Refer to the guided diagnostic routine for this code on the
approved diagnostic system. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
|
| C1A0692 |
Right Rear Height Sensor |
- Right-hand rear height sensor height changing slower than expected
- Suspension prevented from moving
- Height sensor incorrectly installed
- Air spring leak
- Air harness leak
- Blocked/damaged air harness
- Blocked/damaged gallery pipe
- Corner valve stuck closed
- Front or rear valve block pipes incorrectly installed (unions
reversed)
- Reservoir valve block pipes incorrectly installed (unions reversed)
- Reservoir valve stuck open
- Exhaust valve stuck closed
- Corner valve air leak
- Pressure sensor fault
- Height sensor failure
|
Check that the vehicle is free of obstructions. Check the
height sensor for correct installation and torque of fixings. If any
height sensor fixings are slackened or found to be loose, or a height
sensor has been changed, the vehicle ride height must be re-calibrated.
Calibrate the system using the approved diagnostic system. Refer to the
guided diagnostic routine for this code on the approved diagnostic system.
Check for an air spring leak. Check the air harness for evidence of
melting, crushing, kinking or collapsing. Check the front and rear valve
block pipes for correct routing and installation. Check the reservoir
valve block pipes for correct routing and installation. Refer to the
approved diagnostic system for corner, reservoir and exhaust valve checks.
Check the corner valve for leaks. |
| C1A0762 |
Cross Articulation |
- Cross articulation too large whilst vehicle is driven
- Water ingress to wiring harness or connectors
- Height sensor linkage damaged/bent
- Height sensor linkage loose/disconnected
- Height sensor bracket damaged/bent
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor removed and reinstalled without being recalibrated
- New height sensor installed without calibration
- Incorrect height calibration
- Height sensor failure
|
Follow the process detailed in the relevant special service
message (SSM). Check the condition and security of the height sensor
bracket(s). Check the height sensor for correct fitment and fixings
torque. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
|
| C1A081C |
Pressure Sensor Supply |
- Pressure sensor supply voltage out of range
- Pressure sensor harness wiring short circuit to ground, short
circuit to power or high resistance
- Pressure sensor failure
- 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. |
| C1A091C |
Pressure Sensor Signal |
- Pressure sensor signal voltage out of range
- Pressure sensor disconnected
- Pressure sensor harness wiring short circuit to ground, short
circuit to power or high resistance
- Pressure sensor failure
- 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. |
| C1A1064 |
Pressure Fluctuates When System Inactive |
- Reservoir and air spring pipes incorrectly installed to front or
rear valve block (unions reversed)
- Corner valve stuck open
- Pressure sensor harness wiring short circuit to ground, short
circuit to power or high resistance
- Pressure sensor failure
- Air suspension control module failure
|
Check the reservoir and air spring pipes for correct routing
and installation. 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. |
| C1A1164 |
Pressure Fluctuates When System Inactive |
- Reservoir and air spring pipes incorrectly installed to front or
rear valve block (unions reversed)
- Corner valve internal leak
- Reservoir valve internal leak
- Pressure sensor harness wiring short circuit to ground, short
circuit to power or high resistance
- Pressure sensor failure
|
Check the reservoir and air spring pipes for correct routing
and installation. For corner valve, reservoir valve, pressure sensor and
circuit tests refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| C1A1364 |
Pressure Does Not Decrease When Venting Gallery |
- Exhaust valve stuck closed
- Exhaust valve does not hold minimum retention pressure
- Gallery pipe blocked/damaged
- Pressure sensor fault
- Air suspension exhaust silencer blocked/restricted
- Air suspension exhaust pipe blocked/damaged
- Reservoir valve block pipes incorrectly installed (unions reversed)
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. Check the Air suspension exhaust pipe and
silencer for blockage/restriction. Check the reservoir valve block pipes
for correct routing and installation. |
| C1A1864 |
Pressure Increase Too Rapid When Filling Reservoir |
- Reservoir valve stuck closed
- Reservoir pipe blocked/damaged
- Reservoir port blocked/restricted
- Pressure sensor fault
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| C1A2064 |
Pressure Increase Too Slow When Filling Reservoir |
- Compressor fault
- Reservoir pipe air leak
- Reservoir air leak
- Gallery pipe air leak
- Intake filter blocked/restricted
- Intake pipe blocked/restricted
- Air suspension intake silencer blocked/restricted
- Corner valve stuck open
- Pressure sensor fault
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. Check the Air suspension intake pipe and
silencer for blockage/restriction. |
| C1A2464 |
No Temperature Increase When Compressor Requested |
- Air compressor cylinder head temperature sensor disconnected
- Air compressor cylinder head temperature sensor detached from
cylinder head
- Air compressor cylinder head temperature sensor fault
- Air compressor fault
|
Check the security of the compressor cylinder head
temperature sensor and electrical connection. Refer to the guided
diagnostic routine for this code on the approved diagnostic system. |
| C1A2467 |
No Temperature Increase When Compressor Requested |
- Temperature takes too long to read after suitable compressor runtime
- Air compressor cylinder head temperature sensor disconnected
- Air compressor cylinder head temperature sensor fault
- Air compressor disconnected
- Air compressor ground circuit high resistance
- Air compressor fault
|
Check the security of the compressor cylinder head
temperature sensor and electrical connection. Refer to the guided
diagnostic routine for this code on the approved diagnostic system. |
| C1A2616 |
Temperature Sensor Circuit |
- Temperature sensor voltage out of range
- Air compressor cylinder head temperature sensor harness wiring short
circuit to ground, short circuit to power or high resistance
- 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. |
| C1A2712 |
Compressor Circuit |
- Compressor voltage present when compressor not requested
- Air compressor harness wiring short circuit to power
- Air compressor relay fault
- 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. |
| C1A2714 |
Compressor Circuit |
- Compressor voltage present when compressor requested
- Air suspension control module supply (COMP_V) fuse in battery
junction box (BJB) failed
- Air supply relay/air compresor supply fusible link in BJB failed/not
installed
- Air compressor harness wiring short circuit to ground or high
resistance
- Air compressor relay failure
- Air suspension control module failure
|
Check/renew fuses as necessary. Refer to the electircal
guides. 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. |
| C1A2729 |
Compressor Circuit |
- Compressor relay control voltage signal invalid
- Air compressor harness wiring short circuit to power
- Air compressor relay fault
- Air suspension control module failure
|
DTC C1A2712 will be set first. 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.
|
| C1A2864 |
Wrong Number of LEDs Illuminated |
- Wrong number of LEDs illuminated on switch pack
- Air suspension control module supply (BATTERY) fuse in battery
junction box (BJB) failed
- Switch pack harness wiring short circuit to ground, short circuit to
power or high resistance
- LED circuit short circuit to power
- One or more LEDs short circuit to each other
- Switch pack failure
- Air suspension control module failure
|
Check/renew fuse as necessary. Refer to the electircal
guides. Refer to the electrical guides and check the switch pack and LED
wiring ciruits. Renew/repir as necessary. Refer to the warranty policy and
procedures manual if a module is suspect. |
| C1A2992 |
Switch Activation Too Long |
- Ride height change switch activation too long
- Switch pressed for more than 255 seconds
- Switch pack harness wiring short circuit to ground, short circuit to
power or high resistance
- Switch pack failure
- 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. |
| C1A3064 |
Both Switches Pressed At Same Time |
- Raise and lower switches activated at same time
- Air suspension control module supply (BATTERY) fuse in battery
junction box (BJB) failed
- Switch pack harness wiring short circuit to ground, short circuit to
power or high resistance
- Switch pack failure
- Air suspension control module failure
|
Check/renew fuse as necessary. Refer to the electircal
guides. 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. |
| C1A3101 |
Left Front Corner Valve |
- Left-hand front corner valve, general electrical failure
- Front valve block disconnected
- Front valve block harness wiring short circuit to ground or high
resistance
- Left-hand front corner valve failure
- 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. |
| C1A3201 |
Right Front Corner Valve |
- Right-hand front corner valve, general electrical failure
- Front valve block disconnected
- Front valve block harness wiring short circuit to ground or high
resistance
- Right-hand front corner valve failure
- 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. |
| C1A3301 |
Left Rear Corner Valve |
- Left-hand rear corner valve, general electrical failure
- Rear valve block disconnected
- Rear valve block harness wiring short circuit to ground or high
resistance
- Left-hand rear corner valve failure
- 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. |
| C1A3401 |
Right Rear Corner Valve |
- Right-hand rear corner valve, general electrical failure
- Rear valve block disconnected
- Rear valve block harness wiring short circuit to ground or high
resistance
- Right-hand rear corner valve failure
- 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. |
| C1A3501 |
Reservoir Valve |
- Reservoir valve general electrical failure
- Reservoir valve block disconnected
- Reservoir valve block harness wiring short circuit to ground or high
resistance
- Reservoir valve block failure
- 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. |
| C1A3601 |
Exhaust Valve |
- Exhaust valve, general electrical failure
- Exhaust valve disconnected
- Exhaust valve harness wiring short circuit to ground or high
resistance
- Exhaust valve failure
- 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. |
| C1A3701 |
Front Cross-Link Valve |
- Front cross-link valve general electrical failure
- Front valve block disconnected
- Front valve block harness wiring short circuit to ground or high
resistance
- Front cross-link valve failure
- 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. |
| C1A3801 |
Rear Cross-Link Valve |
- Rear cross-link valve general electrical failure
- Rear valve block disconnected
- Rear valve block harness wiring short circuit to ground or high
resistance
- Rear cross-link valve failure
- 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. |
| C1A5501 |
Ignition Switch Input Circuit |
- Ignition switch input circuit; ignition on while wake-up off or
ignition off while engine running
- Ignition switch input circuit short circuit to ground, short circuit
to power or high resistance
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| C1A681C |
Left Front Height Sensor Supply |
- Left-hand front height sensor supply circuit voltage out of range
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- 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. |
| C1A691C |
Right Front Height Sensor Supply |
- Right-hand front height sensor supply circuit voltage out of range
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- 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. |
| C1A701C |
Left Rear Height Sensor Supply |
- Left-hand rear height sensor supply circuit voltage out of range
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- 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. |
| C1A711C |
Right Rear Height Sensor Supply |
- Right-hand rear height sensor supply circuit voltage out of range
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- 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. |
| C1A721C |
Left Front Height Sensor Mechanism |
- Left-hand front height sensor signal voltage out of range
(mechanical)
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor linkage damaged/bent
- Height sensor disconnected
- Height sensor linkage toggled (now operating in reverse direction)
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Incorrect height calibration
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Air suspension control module 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. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
Refer to the warranty policy and procedures manual if a module is suspect.
|
| C1A731C |
Left Front Height Sensor Mechanism |
- Right-hand front height sensor voltage out of range (mechanical)
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor linkage damaged/bent
- Height sensor disconnected
- Height sensor linkage toggled (now operating in reverse direction)
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Incorrect height calibration
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Air suspension control module 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. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
Refer to the warranty policy and procedures manual if a module is suspect.
|
| C1A741C |
Left Rear Height Sensor Mechanism |
- Left-hand rear height sensor signal voltage out of range
(mechanical)
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor linkage damaged/bent
- Height sensor disconnected
- Height sensor linkage toggled (now operating in reverse direction)
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Incorrect height calibration
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Air suspension control module 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. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
Refer to the warranty policy and procedures manual if a module is suspect.
|
| C1A751C |
Right Rear Height Sensor Mechanism |
- Right-hand rear height sensor signal voltage out of range
(mechanical)
- Water ingress to wiring harness or connectors
- Height sensor linkage disconnected
- Height sensor linkage damaged/bent
- Height sensor disconnected
- Height sensor linkage toggled (now operating in reverse direction)
- Height sensor bracket damaged/bent
- Height sensor incorrectly installed
- Incorrect height calibration
- Height sensor harness wiring short circuit to ground, short circuit
to power or high resistance
- Height sensor failure
- Air suspension control module 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. Check the height sensor bracket condition and
security. Check the height sensor for correct installation and torque of
fixings. If any height sensor fixings are slackened or found to be loose,
or a height sensor has been changed, the vehicle ride height must be
re-calibrated. Calibrate the system using the approved diagnostic system.
Refer to the warranty policy and procedures manual if a module is suspect.
|
| C1B1862 |
Supply Voltage X-Ref Check |
- Inconsistent battery voltages received by Air suspension control
module
- Air suspension control module supply circuit(s) short circuit to
ground
- Air suspension control module supply circuit(s) high resistance
- Air suspension control module failure
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| C1B1903 |
Door Status Signal |
- Door status signal, pulse width modulated failures
- Incorrect software loaded to Air suspension control module
- Central junction box to Air suspension module harness wiring short
circuit to ground, short circuit to power or high resistance
- Central junction box fault
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| C1B211C |
Compressor Brush Card Temperature Sensor Circuit |
- Compressor brush card temperature sensor circuit, voltage out of
range
- Compressor brush card temperature sensor harness wiring short
circuit to ground, short circuit to power or high resistance
- Compressor brush card temperature sensor failure
- 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. |
| U007388 |
Control Module Communication Bus 'A' Off |
- CAN bus connections short circuit to each other
|
Refer to the Network Communications section of the workshop
manual. |
| U010087 |
Lost Communication With ECM/PCM "A" |
- CAN bus fault
- ECM disconnected
- ECM not configured
- ECM failure
|
Refer to the Network Communications section of the workshop
manual. |
| U010187 |
Lost Communication With Transmission Control Module |
- CAN bus fault
- Transmission control module (TCM) disconnected
- TCM not configured
- TCM failure
|
Refer to the Network Communications section of the workshop
manual. |
| U010287 |
Lost Communication With Transfer Box Control Module |
- CAN bus fault
- Transfer box control module disconnected
- Transfer box control module not configured
- Transfer box control module failure
|
Refer to the Network Communications section of the workshop
manual. |
| U012287 |
Lost Communication With Vehicle Dynamics Control Module |
- CAN bus fault
- ABS module disconnected
- ABS module not configured
- ABS module failure
|
Refer to the Network Communications section of the workshop
manual. |
| U012687 |
Lost Communication With Steering Angle Sensor Module |
- CAN bus fault
- SASM disconnected
- SASM not configured/calibrated
- SASM failure
|
Refer to the Network Communications section of the workshop
manual. |
| U012887 |
Lost Communication With Park Brake Control Module |
- CAN bus fault
- Park brake module disconnected
- Park brake module not configured
- Park brake module failure
|
Refer to the Network Communications section of the workshop
manual. |
| U013387 |
Lost Communication With Active Roll Control Module |
- CAN bus fault
- Vehicle dynamic suspension system module disconnected
- Vehicle dynamic suspension system module not configured
- ABS module failure
|
Refer to the Network Communications section of the workshop
manual. |
| U013687 |
Lost Communication With Differential Control Module - Rear
|
- CAN bus fault
- Electronic rear differential control module disconnected
- Electronic rear differential control module not configured
- Electronic rear differential control module failure
|
Refer to the Network Communications section of the workshop
manual. |
| U015587 |
Lost Communication With Instrument Panel Cluster (IPC)
Control Module |
- CAN bus fault
- Instrument cluster disconnected
- Instrument cluster not configured
- Instrument cluster failure
|
Refer to the Network Communications section of the workshop
manual. |
| U030055 |
Internal Control Module Software Incompatibility |
- Incorrect software loaded
- CAN wiring to instrument cluster high resistance
- Incorrect instrument cluster CAN configuration
|
Configure the Air suspension control module and instrument
cluster as necessary using the approved diagnostic system. |
| U040186 |
Invalid Data Received From ECM/PCM A |
- Engine management system fault
|
Refer to the Network Communications section of the workshop
manual. |
| U041686 |
Invalid Data Received From Vehicle Dynamics Control Module
|
- Warnings and Messages: Warning - Two Chimes Displayed message - SLOW
DOWN OR VEHICLE WILL LOWER
- Subsequent Warning & Message Warning - One Chime. Message -
SUSPENSION LOWERED Meaning - Vehicle has lowered to Access height
because of failure of another vehicle system
- ABS fault
|
Refer to the Network Communications section of the workshop
manual. Check for ABS system DTCs and repair as necessary. |
| U041786 |
Invalid Data Received From Park Brake Control Module |
|
Refer to the Network Communications section of the workshop
manual. |
| U042886 |
Invalid Data Received From Steering Angle Sensor Module
(SASM) |
- SASM not configured/calibrated
- SAS fault
|
Check the security of the electrical connection.
Configure/calibrate the SAS using the approved diagnostic system. Refer to
the Network Communications section of the workshop manual. |
| U043486 |
Invalid Data Received From Active Roll Control Module |
- Vehicle dynamic suspension system fault
|
Refer to the Network Communications section of the workshop
manual. |
| U1A1387 |
Lost Communication With All Terrain Control Module |
- Lost communication with all terrain optimization switch
- CAN bus fault
- Terrain optimization switch disconnected
- Terrain response module not configured
- Terrain response module failure
|
Refer to the Network Communications section of the workshop
manual. |
| U1A1449 |
CAN Initialization Failure |
- Internal electronic failure
|
Refer to the Network Communications section of the workshop
manual. |
| U1A3562 |
VIN Data |
- VIN from instrument cluster does not match VIN at time of
calibration
- Air suspension control module has been swapped with another vehicle
- Instrument cluster not configured
|
Configure the instrument cluster using the approved
diagnostic system. |
| U200067 |
Motor Temperature |
- Temperature sensor voltage takes too long to read after suitable
compressor runtime
- Compressor brush card temperature sensor harness wiring short
circuit to ground, short circuit to power or high resistance
- Compressor brush card temperature sensor failure
- Compressor fault
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| U200701 |
Valve(s) |
- Valve circuit short circuit to ground
- Water ingress to wiring harness or connectors
- Valve harness wiring short circuit to ground or high resistance
- Air suspension control module failure
|
DTC C1A001D will be set first. Visually inspect the wiring
harness and connectors between the Air suspension control module and the
control valves for water ingress. Refer to the guided diagnostic routine
for this code on the approved diagnostic system. |
| U200711 |
Valve(s) |
- Valve circuit short circuit to ground when system is inactive
- Water ingress to wiring harness or connectors
- Valve harness wiring short circuit to ground or high resistance
- Air suspension control module failure
|
Visually inspect the wiring harness and connectors between
the Air suspension control module and the control valves for water
ingress. Refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| U200719 |
Valve(s) |
- Valve circuit current above threshold
- Valve supply circuit(s) intermittent short circuit to ground or high
resistance
- Valve failure
- Air suspension control module failure
|
Refer to the guided diagnostic routine for this code on the
approved diagnostic system. |
| U200767 |
Valve(s) |
- Valve signal incorrect after event
- Water ingress to wiring harness or connectors
- Valve supply circuit(s) short circuit to ground, short circuit to
power or high resistance
- Air suspension control module failure
|
Visually inspect the wiring harness and connectors between
the Air suspension control module and the control valves 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. |