Jaguar XJ (X350). Service manual — part 1339

•

CAN network fault

Pinpoint Test

G239843p2.

.

U2516 ASM

CAN not responding

•

Multiple CAN
modules with CAN
DTCs flagged

•

CAN circuit; open
circuit, short circuit to
B+, short circuit to
ground

•

ASM internal CAN
fault

•

CAN network fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2518 ASM

CAN CCM message

missing

•

CCM CAN DTC
flagged

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2521 ASM

CAN DSCM message

missing

•

DSCM CAN DTC
flagged

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2523 ASM

CAN ECM message

missing

•

ECM CAN DTC flagged

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U1262 Audio

SCP network fault

•

SCP network circuit;
open circuit, short
circuit to B+, short

For SCP network

tests, GO to Pinpoint

Test G239843p3.

circuit to ground

.

U2003 Audio

CD changer not

responding on D2B

network

•

D2B "wake-up"
circuit; open circuit,
short circuit to B+

•

CD changer D2B fault

•

D2B network fault

For D2B "wake-up"

circuit tests, GO to

Pinpoint Test

G239843p5.

. For optical ring

tests, GO to Pinpoint

Test G239843p24.

.

U2008 Audio

CPM not responding on

D2B network

•

D2B "wake-up"
circuit; open circuit,
short circuit to B+

•

D2B network fault

For D2B "wake-up"

circuit tests, GO to

Pinpoint Test

G239843p5.

. For optical ring

tests, GO to Pinpoint

Test G239843p25.

.

U2019 Audio

VACM not responding

on D2B network

•

D2B "wake-up"
circuit; open circuit,
short circuit to B+

•

VACM D2B fault

•

D2B network fault

For D2B "wake-up"

circuit tests, GO to

Pinpoint Test

G239843p5.

. For optical ring

tests, GO to Pinpoint

Test G239843p26.

.

U2601 Audio

D2B "wake-up" circuit

fault

•

D2B "wake-up"
circuit; short circuit to
ground

For D2B "wake-up"

circuit tests, GO to

Pinpoint Test

G239843p5.

.

U2602 Audio

D2B network ring

incomplete (fault

reported)

•

D2B network module
disconnected

•

D2B network circuit;
open circuit

Check the D2B

"wake-up" circuit,

and the optical ring,

GO to Pinpoint Test

G239843p5.

, GO to Pinpoint

Test G239843p29.

, and GO to Pinpoint

Test G239843p30.

www.

.

U2603 Audio

D2B network ring

incomplete (fault not

reported)

•

D2B network module
disconnected

•

D2B network circuit;
open circuit

Check the D2B

"wake-up" circuit,

and the optical ring,

GO to Pinpoint Test

G239843p5.

, GO to Pinpoint

Test G239843p29.

, and GO to Pinpoint

Test G239843p30.

.

U2604 Audio

D2B network ring

incomplete (corrupted

fault report)

•

D2B network module
disconnected

•

D2B network circuit;
open circuit

Check the D2B

"wake-up" circuit,

and the optical ring,

GO to Pinpoint Test

G239843p5.

, GO to Pinpoint

Test G239843p29.

, and GO to Pinpoint

Test G239843p30.

.

U2605 Audio

Audio unit unable to

initialize it's address

•

More than one
master module
(audio unit) on the
D2B network ring

Check for correct

configuration of the

optical ring. REFER

to the electrical

guides.

U2506 Audio

D2B slave module

unable to initialize it's

address

•

One or more slave
modules duplicated
on the D2B network
ring

Check for corrrect

configuration of the

optical ring. REFER

to the electrical

guides.

U2607 Audio

D2B slave module

switched into bypass

mode

•

One or more slave
modules on the D2B
network ring
switched into bypass
mode

Check the D2B

"wake-up" circuit,

and the optical ring,

GO to Pinpoint Test

G239843p5.

, GO to Pinpoint

Test G239843p29.

, and GO to Pinpoint

Test G239843p30.

. Contact dealer

technical support for

advice on possible

module failure if

circuits are sound.

U2609 Audio

D2B "wake-up" signal

out of specification

•

D2B "wake-up"
circuit; high
resistance

•

D2B network slave
module failure

For D2B "wake-up"

circuit tests, GO to

Pinpoint Test

G239843p5.

.

U2613 Audio

NSM not responding on

D2B network

•

D2B "wake-up"
circuit; open circuit,
short circuit to B+

•

NSM D2B fault

•

D2B network fault

For D2B "wake-up"

circuit tests, GO to

Pinpoint Test

G239843p5.

.

U2614 Audio

AMP not responding on

D2B network

•

D2B "wake-up"
circuit; open circuit,
short circuit to B+

•

AMP D2B fault

•

D2B network fault

For D2B "wake-up"

circuit tests, GO to

Pinpoint Test

G239843p5.

.

U2615 Audio

Rear entertainment

control panel not

responding on D2B

network

•

D2B "wake-up"
circuit; open circuit,
short circuit to B+

•

Rear entertainment
control panel D2B
fault

•

D2B network fault

For D2B "wake-up"

circuit tests, GO to

Pinpoint Test

G239843p5.

.

U2022 CCM

Control panel

communications error

•

Control panel "clock"
circuit; open circuit,
short circuit to
ground, short circuit
to B+

•

Control panel data
circuit; open circuit,
short circuit to
ground, short circuit
to B+

•

Control panel failure

For control panel

circuit tests, GO to

Pinpoint Test

G239843p37.

U2516 CCM

CAN not responding

•

Multiple CAN
modules with CAN
DTCs flagged

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

www.