Jaguar XJ (X350). Manual — part 1349

-> No

INSTALL a new telematic harness between RC05 and DB06. For additional information, refer to the

electrical guide. CLEAR the DTC. TEST the system for normal operation.

G239843t249 : CHECK THE FIBRE OPTIC LEAD FROM THE VOICE MODULE
TO THE NAVIGATION COMPUTER

1. Disconnect optical connector DB04. 2. Disconnect optical connector DB06. 3. Connect the optical

bus tester to DB04. 4. Check for light pulses at the transmitter pin of disconnected D2B connector

DB06.

•

Are light pulses visible?

-> Yes

GO to Pinpoint Test G239843t250.

-> No

INSTALL a new telematic harness between DB04 and DB06. For additional information, refer to the

electrical guide. CLEAR the DTC. TEST the system for normal operation.

G239843t250 : CHECK THE FIBRE OPTIC LEAD FROM THE NAVIGATION
COMPUTER TO THE AMP

1. Disconnect optical connector DB06. 2. Disconnect optical connector DB07. 3. Connect the optical

bus tester to DB06. 4. Check for light pulses at the transmitter pin of disconnected D2B connector

DB07.

•

Are light pulses visible?

-> Yes

Recheck DTCs. No fault found in D2B system.

-> No

INSTALL a new telematic harness between DB06 and DB07. For additional information, refer to the

electrical guide. CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G239843p30 : U2603:
BREAK IN OPTICAL HARNESS TO
AUDIO CONTROL MODULE.
(RECEIVER)

G239843t251 : CHECK FIBRE OPTIC LEAD BETWEEN LUGGAGE
COMPARTMENT JOINT AND AMPLIFIER

1. Disconnect the fibre optic connector DB07. 2. Disconnect the fibre optic connector DB01. 3.

Connect the optical bus tester to DB07. 4. Set the optical bus tester to TX. 5. Set the optical bus

tester to ON. 6. Check for light pulses at the receiver pin of disconnected D2B connector DB01.

•

Are light pulses visible?

-> Yes

GO to Pinpoint Test G239843t252.

-> No

INSTALL a new telematic harness between DB01 and DB07. For additional information, refer to the

electrical guide. CLEAR the DTC. TEST the system for normal operation.

G239843t252 : CHECK CABIN FIBRE OPTIC HARNESS

1. Disconnect the fibre optic connector TL95. 2. Disconnect the fibre optic connector DB01. 3.

Connect the optical bus tester to DB01 using the adaptor lead, if required. 4. Set the optical bus

tester to TX. 5. Set the optical bus tester to ON. 6. Check for light pulses at the receiver pin of

disconnected D2B connector TL95.

•

Are light pulses visible?

-> Yes

GO to Pinpoint Test G239843t253.

-> No

INSTALL a new cabin optical harness between RA01 and FC107. For additional information, refer to

the electrical guide. CLEAR the DTC. TEST the system for normal operation.

G239843t253 : CHECK FIBRE OPTIC LEAD BETWEEN ASHTRAY AND AUDIO
CONTROL MODULE

1. Disconnect the fibre optic connector CC21. 2. Disconnect the fibre optic connector TL95. 3.

Connect the optical bus tester to CC21. 4. Set the optical bus tester to TX. 5. Set the optical bus tester

to ON. 6. Check for light pulses at the receiver pin of disconnected D2B connector TL95.

•

Are light pulses visible?

-> Yes

GO to Pinpoint Test G239843t254.

-> No

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INSTALL a new instrument optical harness between CC21 and TL95. For additional information, refer

to the electrical guide. CLEAR the DTC. TEST the system for normal operation.

G239843t254 : CHECK THE AUDIO CONTROL MODULE

1. Connect the optical short link between the receiver and transmitter of the audio control module.

2. Turn the ignition switch to the ACC position. 3. Wait for 10 seconds. 4. Check for DTC.

•

Is U2603 logged?

-> Yes

INSTALL a new audio control module, <<415-01>> CLEAR the DTC. TEST the system for normal

operation.

-> No

Recheck DTCs. No fault found in D2B system.

PINPOINT TEST G239843p6 : CHECK
THE SUPPLIES AND GROUNDS TO THE
CD CHANGER

G239843t49 : CHECK THE PERMANENT SUPPLY TO THE CD CHANGER

1. Disconnect the CD changer electrical connector, TL05. 2. Measure the voltage between TL05, pin

02 (NW) and GROUND.

•

Is the voltage less than 10 volts?

-> Yes

REPAIR the circuit between the CD changer and battery. This circuit includes the rear power

distribution box (fuse 27). For additional information, refer to the wiring diagrams. TEST the system

for normal operation.

-> No

GO to Pinpoint Test G239843t50.

G239843t50 : CHECK THE GROUND TO THE CD CHANGER

1. Measure the resistance between TL05, pin 01 (BK) and GROUND.

•

Is the resistance greater than 5 ohms?

-> Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. TEST the

system for normal operation.

-> No

CHECK for DTCs indicating a wake-up circuit or optical ring fault. REFER to the DTC index.

PINPOINT TEST G239843p7 : CHECK
THE SUPPLIES AND GROUNDS TO THE
AMPLIFIER

G239843t51 : CHECK THE PERMANENT SUPPLY TO THE AMPLIFIER

1. Disconnect the amplifier electrical connector, TL09. 2. Measure the voltage between TL09, pins 03

and 09 (NR) and GROUND.

•

Is the voltage less than 10 volts?

-> Yes

REPAIR the circuit between the amplifier and battery. This circuit includes the rear power distribution

box (fuse 34). For additional information, refer to the wiring diagrams. TEST the system for normal

operation.

-> No

GO to Pinpoint Test G239843t52.

G239843t52 : CHECK THE GROUND TO THE AMPLIFIER

1. Measure the resistance between TL09, pins 02 and 08 (B) and GROUND.

•

Is the resistance greater than 5 ohms?

-> Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. TEST the

system for normal operation.

-> No

CHECK for DTCs indicating a wake-up circuit or optical ring fault. REFER to the DTC index.

PINPOINT TEST G239843p8 : CHECK
THE SUPPLIES AND GROUNDS TO THE
CELLULAR PHONE MODULE

G239843t53 : CHECK THE PERMANENT SUPPLY TO THE PHONE MODULE

1. Disconnect the phone module electrical connector, TL07. 2. Measure the voltage between TL07,

pins 12 and 13 (RW) and GROUND.

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