Jaguar XJ (X350). Manual — part 1288

Diagnosis and testing

Audio System

Principles of Operation

For a detailed description of the Audio system, refer to the relevant Description and Operation

sections in the workshop manual.

Audio System

Audio System - VIN Range: H18680->H99999

Audio System

Antenna

Speakers

Speakers

Inspection and Verification

1 . Verify the customer concern.

2 . Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Electrical

•

Fuses/Relays

•

Damaged, Loose or Corroded Connector(s)

•

Damage to Wiring Loom/Incorrect Location, Stretched or Taught

1 . If an obvious cause for an observed or reported concern is found, correct the cause (if possible)

before proceeding to the next step.

2 . If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC

Index.

DTC Index

Gateway module

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

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

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 multi meter (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.

NOTE:

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

B11A4 DAB L Band Antenna

•

DAB (digital audio
broadcast) L band
antenna circuit to DAB
module - short to power,
ground or open circuit

Refer to electrical circuit diagrams,

notes and check DAB (digital audio

broadcast) L band antenna circuit

for short to power, ground or open

B11A5 DAB Band 3 Antenna

•

DAB (digital audio
broadcast) band 3
antenna circuit to DAB
module - short to power,
ground or open

Refer to electrical circuit diagrams,

notes and check DAB (digital audio

broadcast band 3) antenna circuit

for short to power, ground or open

B1238

Over Temperature

Fault

•

Gateway module - over
temperature

Check gateway module and

location for causes of excessive

NOTE:

www.

temperature, install a new gateway

module as required, refer to the

new module installation note at the

top of the DTC Index

B1342

ECU Internal failure

•

Gateway module -
internal failure

Internal failure, install a new

gateway module as required, refer

to the new module installation

note at the top of the DTC Index

B1A89 Satellite Antenna

•

Satellite radio module or
digital tuner antenna
circuit - short to power,
ground or open

Refer to electrical circuit diagrams,

notes and check satellite radio

module or digital tuner antenna

circuit for short to power, ground

or open

B2477

Module Configuration

Failure

•

Gateway module -
configuration failure

The module can be configured

using the new module procedure.

Check and configure as required

U0193

Lost Communication

with Digital Audio

Control

Module(SDARS)

•

Gateway module - lost
communication with
satellite radio module

Refer to electrical circuit diagrams,

notes and check gateway module

to satellite radio module power

and bus circuit to gateway module

on MOST ring

U0194

Lost Communication

with Digital Audio

Control Module

•

Gateway module - lost
communication with
digital audio broadcast
module

Refer to electrical circuit diagrams,

notes and check gateway module

to digital audio broadcast module

power and bus circuit to gateway

module on MOST ring

U0237

Lost Communication

with Digital Audio

Control Module

•

Gateway module - lost
communication with
(DACMC) Digital Audio
Control Module C

Refer to electrical circuit diagrams,

notes and check gateway module

to Digital Audio Control Module C

power and bus circuit to gateway

module on MOST ring

U1A15

Incomplete MOST

Ring Reported By

Gateway Module

•

Gateway module -
(MOST) ring break

Refer to electrical circuit diagrams,

notes and check (MOST) circuit for

ring break

U2601

(D2B)Wake-up Line

Short To Ground

•

Gateway module, wake-
up line circuit - short to

Refer to electrical circuit diagrams,

notes and check gateway module

(D2B) wake-up line circuit for short

ground

to ground

U2609

(D2B)Wake-up

Pulsewidth Out Of

Specification

•

Gateway module - wake-
up line circuit fault
(pulse< 50mS, pulse >
110mS)

Refer to electrical circuit diagrams,

notes and check gateway module

(D2B) wake-up line circuit for fault

U2610

(D2B) Slave ECU Fails

To Receive A Report

Position

•

Gateway module - during
initialization no position
status report is received
from one or more slave
modules

Refer to electrical circuit diagrams,

notes and check (D2B) slave

modules and circuit for fault,

replace as required, refer to the

new module installation note at the

top of the DTC Index

U2611

(D2B) Slave ECU fails

to receive an alarm

clear command

•

Gateway module - on
entering alarm state,
slave ECU has failed to
receive alarm clear
command

Refer to electrical circuit diagrams,

notes and check (D2B) slave

modules and circuit for fault,

replace as required, refer to the

new module installation note at the

top of the DTC Index

U3004 Digital Tuner State

•

Gateway module, digital
tuner MOST slave -
module is inoperative

Suspect digital tuner module

replace as required, refer to the

new module installation note at the

top of the DTC Index

U3098 Over Temperature

•

Gateway module, digital
tuner (Most slave) -
above temperature
threshold

Check digital tuner 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

Audio Amplifier 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

www.