Jaguar XJ (X350). Manual — part 1290

With Gateway "B"

control module,
gateway module -
no response
(D2B/MOST)

module to gateway module control and

power circuit`s, install a new module as

required, refer to the new module

installation note at the top of the DTC Index

U1262

SCP (J1850)

Communication

Bus Fault

•

Front
entertainment
control module,
ECU not
responding -
internal standard
corporate protocol
(SCP) chip failure

Refer to electrical circuit diagrams, notes

and check Front entertainment control

module SCP circuit for fault, suspect the

front entertainment control module, install

a new module as required, refer to the new

module installation note at the top of the

DTC Index

U2003

Audio Compact

Disk / Disk Jockey

Unit is Not

Responding

•

Front
entertainment
control module, CD
multichanger - no
response (D2B)

Carry out any pinpoint tests associated with

this DTC using the manufacturer approved

diagnostic system. Refer to electrical circuit

diagrams, notes and check cd multichanger

module and D2B circuit for fault, install a

new module as required, refer to the new

module installation note at the top of the

DTC Index

U2008

Audio Phone Not

Responding

•

Front
entertainment
control module,
telephone control
module - no
response(D2B)

Carry out any pinpoint tests associated with

this DTC using the manufacturer approved

diagnostic system. Refer to electrical circuit

diagrams, notes and check telephone

control module and D2B circuit for fault,

install a new module as required, refer to

the new module installation note at the top

of the DTC Index

U2019

Audio Voice

Module Not

Responding

•

Front
entertainment
control module,
audio voice
module - no
response(D2B)

Carry out any pinpoint tests associated with

this DTC using the manufacturer approved

diagnostic system. Refer to electrical circuit

diagrams, notes and check audio voice

module and D2B circuit for fault, install a

new module as required, refer to the new

module/component installation note at the

top of the DTC Index

U2601

(D2B)Wake-up Line

Short To Ground

•

Front
entertainment
control module,
gateway module -
wake-up line, short

Carry out any pinpoint tests associated with

this DTC using the manufacturer approved

diagnostic system. Refer to electrical circuit

diagrams, notes and check gateway module

to ground

(D2B) wake-up line for short to ground

U2602

Incomplete MOST

Ring (fault report

received)

•

Front
entertainment
control module -
(MOST) ring circuit
fault

Carry out any pinpoint tests associated with

this DTC using the manufacturer approved

diagnostic system. Check front

entertainment control module for most ring

circuit fault

U2603

Incomplete MOST

Ring (No Fault

Report Received)

•

Front
entertainment
control module -
(MOST) ring circuit
fault

Carry out any pinpoint tests associated with

this DTC using the manufacturer approved

diagnostic system. Check (MOST) ring for

circuit fault

U2604

Incomplete MOST

Ring (Corrupted

Fault Report

Received)

•

Front
entertainment
control module -
(MOST) ring circuit
fault

Refer to electrical circuit diagrams, notes

and check (MOST) ring for circuit fault

U2605

Master ECU

Unable To Initialize

It's Address

•

Front
entertainment
control module -
(MOST) ring circuit
fault (more than
one master on the
MOST ring)

Refer to electrical circuit diagrams, notes

and check for configuration fault on (MOST)

ring modules. Install a new module as

required, refer to the new module

installation note at the top of the DTC Index

U2606

Slave ECU Unable

To Initialize It's

Address

•

Front
entertainment
control module -
(MOST) ring circuit
fault slave ecu
configuration fault

Refer to electrical circuit diagrams, notes

and check for configuration fault on (MOST)

ring modules. Install a new module as

required, refer to the new module

installation note at the top of the DTC Index

U2607

Slave ECU (

switched into

bypass mode)

•

Front
entertainment
control module -
(MOST) ring circuit
fault (slave ecu
configuration fault)

The module can be configured using the

new module procedure. Check and

configure as required

U2609

(D2B)Circuit Wake-

up Line (pulse

width out of spec)

•

Front
entertainment
control module -
wake up line circuit
fault (pulse< 50mS,

Refer to electrical circuit diagrams, notes

and check front entertainment control

module(D2B) wake up line circuit for fault

www.

pulse > 110mS)

U2613

Navigation Module

Not Responding on

D2B

•

Front
entertainment
control module -
no response from
navigation module

Carry out any pinpoint tests associated with

this DTC using the manufacturer approved

diagnostic system. Check navigation module

to front audio control module circuit

U2614

Amp Module Not

Responding on

D2B

•

Front
entertainment
control module -
no response from
audio amplifier
module

Carry out any pinpoint tests associated with

this DTC using the manufacturer approved

diagnostic system. Check audio amplifier

module to front audio control module circuit

U2615

Rear

Entertainment

Module Not

Responding on

D2B

•

Front
entertainment
control module -
no response from
rear entertainment
control module

Refer to electrical circuit diagrams, notes

and check rear entertainment control

module to front entertainment control

module control and power circuit`s. Install a

new module as required, refer to the new

module installation note at the top of the

DTC Index

Rear Entertainment Control Module

CAUTION: When probing connectors to take measurements in the course of the pinpoint

tests, use the adaptor kit, part number 3548-1358-00

NOTE:

If the control module/component is suspect and the vehicle remains under manufacturer

warranty, refer to the Warranty Policy and Procedures manual (section B1.2), or determine if

any prior approval program is in operation, prior to the installation of a new

module/component.

NOTE:

When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to

three decimal places and with a current calibration certificate. When testing resistance, always

take the resistance of the DMM leads into account.

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

NOTE:

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

NOTE:

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.

DTC

Description

Possible Causes

Action

B1238

Over

Temperature

Fault

•

Rear entertainment control
module - DVD player has
overheated (+80 Degrees
Celsius)

Check DVD player module and

location for causes of excessive

temperature, install a new module as

required, refer to the new module

installation note at the top of the

DTC Index

B1342

ECU Internal

Failure

•

Rear entertainment control
module - defective

Refer to electrical circuit diagrams,

notes and check rear entertainment

control module for fault. Install a

new module as required, refer to the

new module installation note at the

top of the DTC Index

B2642

Low Power

Detected

•

Rear entertainment control
module - has experienced
more than 30 continuous
seconds under 8.5volts
Generator voltage is
regulated by the engine
control module

Refer to electrical circuit diagrams,

notes and check rear entertainment

control module power and ground

circuit's

B2656

DVD (Digital

Versatile Disk)

Error

•

Rear entertainment control
module -DVD not detected

Refer to electrical circuit diagrams,

notes and check rear entertainment

control module to DVD control and

power circuit

U2601 (D2B)Wake-up

line short to

•

Rear entertainment control
module - wake up line

Carry out any pinpoint tests

associated with this DTC using the

NOTE:

www.