2010 JAGUAR XFR Can bus

Published: 17-Apr-2014
General Information - Diagnostic Trouble Code (DTC) Index Vehicles With:
6HP28 6-Speed Automatic Transmission, DTC: Transmission Control Module
(TCM)
Description and Operation

Transmission Control Module (TCM) 6 speed (6HP28 Applications)


CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle
NOTES:


If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation
of a new module/component


Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to
the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the
manufacturer-approved diagnostic system)


When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places and with a
current calibration certificate. When testing resistance, always take the resistance of the digital multimeter leads into account


Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests


Inspect connectors for signs of water ingress, and pins for damage and/or corrosion


If diagnostic trouble codes are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent
concern may be the cause. Always check for loose connections and corroded terminals


Where an 'on demand self-test' is referred to, this can be accessed via the 'diagnostic trouble code monitor' tab on the
manufacturers approved diagnostic system


Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific
customer complaint and carry out the recommendations as needed

The table below lists all diagnostic trouble codes (DTCs) that could be logged in the transmission control module, for
additional diagnosis and testing information refer to the relevant diagnosis and testing section
For additional information, refer to: Diagnostics (307-01 Automatic Transmission/Transaxle - V8 5.0L Petrol/V8 S/C 5.0L Petrol,
Diagnosis and Testing).

DTC Description Possible Causes Action P0121-86 Throttle/Pedal Position
Sensor A Circuit
Range/Performance -
Signal invalid
Throttle/Pedal Position
Sensor Fault (Data
received over CAN Bus)
Check Engine Control Module for stored DTCs P0219-86
Engine Overspeed
Condition - Signal invalid
Engine speed too low or
too high (Data received
over CAN Bus)
Check Engine Control Module for stored DTCs P0500-81
Vehicle Speed Sensor A -
Invalid serial data
received
Vehicle Speed Sensor
fault (Data received over
CAN Bus)
Check Dynamic Stability Control module for stored
DTCs P0501-81 Vehicle Speed Sensor A
Vehicle Speed receive
Check Dynamic Stability Control module for stored Range/Performance - Invalid serial data over CAN Bus does not DTCs. Check correct Differential is installed to the received match Transmission vehicle Output-Shaft speed

DTC Description Possible Causes Action suspect. P0783-77
3-4 Shift - Commanded
position not reachable
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0784-07
4-5 Shift - Mechanical
Failures
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0784-77
4-5 Shift - Commanded
position not reachable
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0798-1A
Pressure Control Solenoid
C Electrical - Circuit
Resistance Below Threshold
Pressure control solenoid
C Circuit resistance below
threshold
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0798-1E
Pressure Control Solenoid
C Electrical - Circuit Short
to Ground
Pressure control solenoid
C electrical circuit short
to ground
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0798-21
Pressure Control Solenoid
C Electrical - Signal
amplitude < minimum
Pressure Control Solenoid
C Electrical signal
amplitude < minimum
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0814-62 Transmission Range
Display Circuit - Signal
compare failure
Transmission Range
Display Circuit signal
compare failure
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0826-08
Up and Down Switch
circuit - Bus Signal
Message Failures
Invalid CAN signal from
Central Junction
Box/Instrument Cluster
Stuck Sprintronic switch
CAN bus circuit fault
Check Central Junction Box and Instrument Cluster
for stored DTCs. Check gear change switches for
correct operation. Refer to circuit diagrams and
check CAN bus for a circuit fault P0826-81
Up and Down Switch
Circuit - Invalid serial
data received
Invalid Can signal from
Central Junction Box /
Instrument Cluster
Stuck Sprintronic switch
CAN Bus Circuit fault
Check Central Junction Box and Instrument Cluster
for stored DTCs. Check Gear Change Switches for
correct operation. Refer to Circuit diagrams and
check CAN Bus for Circuit fault P0826-88
Up and Down Switch
Circuit - Bus off
Steering Wheel Module to
Central Junction Box /
Instrument Cluster LIN
Bus failure
Check Central Junction Box and Steering Wheel
Ice Switches for stored DTCs. Refer to Circuit
diagrams and check LIN Bus for Circuit fault P0829-07
5-6 Shift - Mechanical
Failures
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. www.JagDocs.com

DTC Description Possible Causes Action P2764-11 Torque Converter Clutch
Pressure Control Solenoid
Control Circuit Low -
Circuit Short to Ground
Torque converter clutch
pressure control solenoid
control Circuit Short to
Ground
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2764-1A Torque Converter Clutch
Pressure Control Solenoid
Control Circuit Low -
Circuit Resistance Below Threshold
Torque converter clutch
pressure control solenoid
control circuit resistance
below threshold
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2764-1E Torque Converter Clutch
Pressure Control Solenoid
Control Circuit Low -
Circuit Resistance Out Of
Range
Torque converter clutch
pressure control solenoid
control circuit resistance
out of range
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2807-11
Pressure Control Solenoid
G - Circuit Short to
Ground
Park solenoid Circuit
Short to Ground
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2807-12
Pressure Control Solenoid
G - Circuit Short to
Battery
Park solenoid Circuit
Short to Power
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2807-13
Pressure Control Solenoid
G - Circuit Open
Park solenoid Circuit
Open Circuit
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2807-14
Pressure Control Solenoid
G - Circuit Short to
Ground or Open
Park solenoid Circuit
Short to Ground or Open
Circuit
Carry out any diagnostic pinpoint tests associated
with this DTC using the manufacturer approved
diagnostic system. Suspect the Transmission
Control Module. Install a new Transmission Control
Module as required, refer to the warranty policy
and procedures manual if a module/component is
suspect. B1087-82
LIN Bus "A" - Alive /
sequence counter
incorrect / not updated
Alive counter fault
Check Transmission Shift Module for stored DTCs.
Refer to the electrical Circuit diagrams and check
Transmission Control Module to Transmission Shift
Module for Short to Ground or Open Circuit (LIN
Bus) B1087-83
LIN Bus "A" - Value of
signal protection
calculation incorrect
Checksum error
Check Transmission Shift Module for stored DTCs
Refer to the electrical Circuit diagrams and check
Transmission Control Module to Transmission Shift
Module for Short to Ground or Open Circuit (LIN
Bus) B1087-87
LIN Bus "A" - Missing
message
Transmission Shift
Module is NOT visible to
the Transmission Control
Module on the LIN Bus
Check Transmission Shift Module for stored DTCs
Refer to the electrical Circuit diagrams and check
Transmission Control Module to Transmission Shift
Module for Short or Open Circuit (LIN Bus) B1087-88 LIN Bus "A" - Bus off
LIN Bus Circuit fault.
Check hardware of LIN
connection between
transmission and
Transmission Shift
Module
Refer to the electrical Circuit diagrams and check
Transmission Control Module to Transmission Shift
Module LIN bus circuit for Short, Open Circuit.
Check Transmission Shift Module for related DTCs U0001-88
High Speed CAN
Communication Bus - Bus
off
CAN Bus off
Refer to the electrical Circuit diagrams and check
CAN Bus for Circuit fault

DTC Description Possible Causes Action U0100-82
Lost Communication With
ECM/PCM "A" - Alive /
sequence counter
incorrect / not updated
Alive counter fault
Check Engine Control Module for stored DTCs U0100-83
Lost Communication With
ECM/PCM "A" - Value of
signal protection
calculation incorrect
Checksum fault
Check Engine Control Module for stored DTCs U0100-87
Lost Communication With
ECM/PCM "A" - Missing
message
CAN Timeout
NOTE: Do NOT install a new Engine Control Module
if an Engine Control Module Timeout DTC is only logged in
the Transmission Control Module, the failure is NOT with
the Engine Control Module

Check Engine Control Module for stored DTCs.
Check CAN Bus Circuit for fault U0103-82
Lost Communication With
Gear Shift Control Module
A - Alive / sequence
counter incorrect / not updated
Alive counter fault
Check Transmission Shift Module for stored DTCs.
Check CAN Bus Circuit for fault U0103-83
Lost Communication With
Gear Shift Control Module
A - Value of signal
protection calculation
incorrect
Checksum fault
Check Transmission Shift Module for stored DTCs.
Check CAN Bus Circuit for fault U0103-87
Lost Communication With
Gear Shift Control Module
A - Missing message
CAN Timeout
Check Transmission Shift Module for stored DTCs.
Check CAN Bus Circuit for fault U0122-82
Lost Communication With
Vehicle Dynamics Control
Module - Alive /
sequence counter
incorrect / not updated
Alive counter fault
Check Dynamic Stability Control (ABS) for stored
DTCs. Check CAN Bus Circuit for fault U0122-83
Lost Communication With
Vehicle Dynamics Control
Module - Value of signal
protection calculation
incorrect
Checksum fault
Check Dynamic Stability Control (ABS) for stored
DTCs. Check CAN Bus Circuit for fault U0122-87
Lost Communication With
Vehicle Dynamics Control
Module - Missing message
CAN Timeout
Check Dynamic Stability Control (ABS) for stored
DTCs. Check CAN Bus Circuit for fault U0126-00
Lost Communication With
Steering Angle Sensor
Module - No sub type
information
Lost Communication With
Steering Angle Sensor
Module
Check SAS for stored DTCs. Check CAN Bus Circuit
for fault U0128-87
Lost Communication With
Park Brake Control
Module - Missing message
CAN timeout electronic
parking brake module
Check Electronic Parking Brake Module (EPB) for
stored DTCs. Check CAN Bus Circuit for fault U0140-82
Lost Communication With
Body Control Module -
Alive / sequence counter
incorrect / not updated
Alive counter fault
Check Central Junction Box for stored DTCs. Check
CAN Bus Circuit for fault U0140-83
Lost Communication With
Body Control Module -
Value of signal protection
calculation incorrect
Checksum fault
Check Central Junction Box for stored DTCs. Check
CAN Bus Circuit for fault U0140-87
Lost Communication With
Body Control Module -
Missing message
CAN Timeout
Check Central Junction Box for stored DTCs. Check
CAN Bus Circuit for fault U0155-87
Lost Communication With
Instrument Panel Cluster
(IPC) Control Module - Missing message
CAN timeout instrument
cluster
Check Instrument Cluster for stored DTCs. Check
CAN Bus Circuit for fault U0300-68
Control Module - Event
information
Transmission software
does not match vehicle
network
Check Central Junction Box software level, Check
Transmission Control Module Software level,
Update software as required using the
manufacturer approved process

DTC Description Possible Causes Action U0401-08
Invalid Data Received
From ECM/PCM A - Bus
Signal Message Failures
Inaccurate engine speed,
torque information
Check Engine Control Module for stored DTCs,
Check CAN Bus circuit for faults U0401-68
Invalid Data Received
from ECM/PCM A - Event
information
Inaccurate engine speed,
torque information
Check Engine Control Module for stored DTCs.
Check CAN Bus Circuit for fault U0401-86
Invalid Data Received
from ECM/PCM A - Signal
Invalid
Inaccurate engine speed,
torque information
Check Engine Control Module for stored DTCs.
Check CAN Bus Circuit for fault U0404-68
Invalid Data Received
from Gear Shift Control
Module A - Event
information
Incorrect CAN data
received from
Transmission Shift
Module
Check Transmission Shift Module for stored DTCs.
Refer to Circuit diagrams and check CAN and LIN
Bus for Circuit fault U0404-81
Invalid Data Received
from Gear Shift Control
Module A - Invalid Serial
Data Received
Incorrect LIN data
received from
Transmission Shift
Module
Check Transmission Shift Module for stored DTCs.
Refer to Circuit diagrams and check CAN and LIN
Bus for Circuit fault U0416-68
Invalid Data Received
From Vehicle Dynamics
Control Module - Event
information
Event information brake
information
Check Engine Control Module for stored DTCs.
Check CAN Bus Circuit for fault U0422-68
Invalid Data Received
From Body Control
Module - Event
information
Event information invalid
Power mode information
Check Central Junction Box for stored DTCs. Check
CAN Bus Circuit for fault U101B-87
Lost Communication With
GSM - Multiple Bus -
Missing message
Missing message lost
communication with
Transmission Shift
Module (multiple Bus)
Check Transmission Shift Module for stored DTCs.
Refer to Circuit diagrams and check CAN and LIN
Bus for Circuit fault U3000-49
Control Module - Internal
electronic failure
Internal electronic failure
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. U3000-4B
Control Module - Circuit
resistance above
threshold
Internal electronic failure
Check and correct oil level. Check hydraulic flow
through oil cooler and pipe circuit for restriction or
blockage. If no restrictions found, suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. U3000-81
Control Module - Invalid
serial data received
Vehicle or Engine type
signal incorrect from
Central Junction Box or
incorrect Transmission
Control Module software
installed
Reflash the Transmission Control Module using the
manufacturer approved process U3001-94
Control Module Improper
Shutdown - Unexpected
operation
Control Module Improper
Shutdown (voltage
related)
Check Engine Control Module For Power
(alternator) faults. Check Power and Ground
Circuit and Battery for fault. Clear DTCs. Road
Test. If DTC reoccurs suspect the Transmission
Control Module. Install a new Transmission Control
Module as required, refer to the warranty policy
and procedures manual if a module/component is
suspect.

Published: 17-Apr-2014
General Information - Diagnostic Trouble Code (DTC) Index DTC: Transmission
Shift Module (GSM)
Description and Operation

Gear Shift Module (GSM)


CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle
NOTES:


If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation
of a new module/component


Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to
the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the
manufacturer-approved diagnostic system)


When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places and with a
current calibration certificate. When testing resistance, always take the resistance of the digital multimeter leads into account


Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests


Inspect connectors for signs of water ingress, and pins for damage and/or corrosion


If diagnostic trouble codes are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent
concern may be the cause. Always check for loose connections and corroded terminals


Where an 'on demand self-test' is referred to, this can be accessed via the 'diagnostic trouble code monitor' tab on the
manufacturers approved diagnostic system


Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific
customer complaint and carry out the recommendations as needed

The table below lists all diagnostic trouble codes (DTCs) that could be logged in the gear shift module, for additional diagnosis
and testing information refer to the relevant diagnosis and testing section.
For additional information, refer to: External Controls (307-05 Automatic Transmission/Transaxle External Controls - V6 3.0L
Petrol, Diagnosis and Testing).

DTC Description Possible Causes Action B1087-08
LIN Bus "A" - Bus
Signal / Message
Failures
LIN bus 'A' Error
Refer to the electrical circuit diagrams and
check LIN input signal circuit for short circuit
to ground, short circuit to power, open
circuit, high resistance B1087-81 LIN Bus "A" -
Invalid serial data
received
Transmission control module LIN
message error - LIN/CAN signal
mismatch (complement fault)
Refer to the electrical circuit diagrams and
check LIN input signal circuit for short circuit
to ground, short circuit to power, open
circuit, high resistance. Check transmission
control module for related DTCs and refer to
relevant DTC index B1087-82 LIN Bus "A" - Alive / sequence counter
incorrect / not
updated
Transmission control module LIN
message error - Alive counter fault
Refer to the electrical circuit diagrams and
check LIN input signal circuit for short circuit
to ground, short circuit to power, open
circuit, high resistance. Check transmission
control module for related DTCs and refer to
relevant DTC index

DTC Description Possible Causes Action B1087-83
LIN Bus "A" - Value
of signal protection
calculation
incorrect
Transmission control module LIN
message error - checksum fault
Refer to the electrical circuit diagrams and
check LIN input signal circuit for short circuit
to ground, short circuit to power, open
circuit, high resistance. Check transmission
control module for related DTCs and refer to
relevant DTC index B1087-87 LIN Bus "A" -
Missing message
Transmission control module LIN
message error - Missing message
Refer to the electrical circuit diagrams and
check LIN input signal circuit for short circuit
to ground, short circuit to power, open
circuit, high resistance. Check transmission
control module for related DTCs and refer to
relevant DTC index B1142-62
Ignition Status 1 -
Signal compare
failure
Hardwired ignition and CAN
powermode signals differ
Refer to the electrical circuit diagrams and
check ignition supply circuit for short circuit
to ground, short circuit to power, open
circuit, high resistance B123C-01
Dynamic Stability
Control Status
Indicator - General
Electrical Failure
Dynamic stability control LED failure
Check transmission shift module, check
operation of the dynamic stability control
button status illumination, check and install
new transmission shift module as required.
Refer to the warranty policy and procedures
manual, or determine if any prior approval
programme is in operation, prior to the
installation of a new module B123D-64
Dynamic Stability
Control Button -
Signal plausibility
failure
Dynamic stability control button may
be stuck, may be due to a faulty
button or to the user holding the
button for a prolonged period
(dynamic stability control button
detected as pressed for 30 seconds)
(S1)
Check for normal dynamic stability control
button functionality. If it operates normally
then no further action required. If the
dynamic stability control button fails to
operate normally then may be due to an
internal fault, check and install new
transmission shift module as required. Refer
to the warranty policy and procedures
manual, or determine if any prior approval
programme is in operation, prior to the
installation of a new module B123F-01
Adaptive Speed
Limiter Mode
Indicator - General
Electrical Failure
Adaptive speed limiter LED failure
Check transmission shift module, check
operation of the active speed limiter button
status illumination, check and install new
transmission shift module as required. Refer
to the warranty policy and procedures
manual, or determine if any prior approval
programme is in operation, prior to the
installation of a new module B1241-64
Adaptive Speed
Limiter Button -
Signal plausibility
failure
May be due to a faulty button or to
the user holding the button for a
prolonged period (adaptive speed
limiter button detected as pressed
for 30 seconds)
Check for normal adaptive speed limiter
button functionality. If it operates normally
then no further action required. If the
adaptive speed limiter button fails to
operate normally then may be due to an
internal fault, check and install new
transmission shift module as required. Refer
to the warranty policy and procedures
manual, or determine if any prior approval
programme is in operation, prior to the
installation of a new module B1242-64
Winter Button -
Signal plausibility
failure
May be due to a faulty button or to
the user holding the button for a
prolonged period (winter button
detected as pressed for 30 seconds)
Check for normal winter button functionality.
If it operates normally then no further action
required. If the winter button fails to operate
normally then may be due to an
internal fault, check and install new
transmission shift module as required. Refer
to the warranty policy and procedures
manual, or determine if any prior approval
programme is in operation, prior to the
installation of a new module www.JagDocs.com

Published: 12-May-2014
General Information - Diagnostic Trouble Code (DTC) Index DTC: Portable
Audio Interface Control Module (PAICM)
Description and Operation

Portable Audio Interface Control Module (PAICM)


CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.
NOTES:


If a control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty
Policy and Procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new
module/component.


Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to
the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the
manufacturer-approved diagnostic system).


When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places, and with
an up-to-date calibration certificate. When testing resistance always take the resistance of the digital multimeter leads into
account.


Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.


Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.


If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the
cause. Always check for loose connections and corroded terminals.


Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific
customer complaint and carry out the recommendations as required.

The table below lists all Diagnostic Trouble Codes (DTCs) that could be logged in the Portable Audio Interface Control Module
(PAICM). For additional diagnosis and testing information, refer to the relevant Diagnosis and Testing section in the workshop
manual.
For additional information, refer to: Information and Entertainment System (415-00 Information and Entertainment System - General Information, Diagnosis and Testing).

DTC Description Possible Causes Action U3000-13
Control
Module -
Circuit open
Universal serial bus
(USB) harness
between portable
audio interface panel
and user interface
panel is not properly
connected
Connection - detect
circuit between
portable audio
interface panel and
user interface panel
is not grounded
Universal serial bus
(USB) harness
between portable
audio interface panel
and user interface
panel is open circuit
Check for correct connection of universal serial bus (USB) harness
between portable audio interface panel and user interface panel.
Refer to the electrical circuit diagrams and check portable audio
interface module connection detect circuit between portable audio
interface panel and user interface panel is grounded. Install
universal serial bus (USB) harness between portable audio
interface panel and user interface panel as required, refer to the
new module/component installation note at the top of the DTC
Index U3000-44
Control
Module - Data
memory
failure
Portable audio
interface module
internal RAM memory
Suspect the portable audio interface module. Check and install a
new module as required. Refer to the warranty policy and
procedures manual if a module is suspect