Jaguar XJ (X350). Manual — part 1337

Amp

box

32

5 Amp

Parking aid module, voice, cellular phone module

Primary junction

box

03

5 Amp

Left-hand/Right-hand HID headlight,

Primary junction

box

33

5 Amp

J-Gate module, transmission control module

Primary junction

box

04

5 Amp

Instrument cluster

Primary junction

box

19

5 Amp

Rear electronic module, engine control module

Primary junction

box

17

5 Amp

ABS module

Primary junction

box

4 . Where the Jaguar approved diagnostic system is available, complete the S93 report before

clearing any or all fault codes from the vehicle.

NOTE:

If a DTC cannot be cleared, then there is a permanent fault present that flags again as soon as it

is cleared (the exception to this is P1260, which will only clear following an ignition OFF, wait

one minute, ignition ON cycle after rectification).

5 . If the cause is not visually evident and the Jaguar approved diagnostic system is not available, use

a scan tool to retrieve the fault codes before proceeding to the diagnostic trouble code (DTC) index

chart, or the symptom chart if no DTCs are set.

6 . Using the Jaguar approved diagnostic system where available, and a scan tool where not, check

the freeze frame data for information on the conditions applicable when the fault was flagged. The

format of this will vary, depending on the tool used, but can provide information useful to the

technician in diagnosing the fault.

CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Each vehicle is

configured to it's own VID block, and substitution of control modules may not only not confirm a

fault, but may cause faults in the vehicle being tested and/or the donor vehicle.

CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these

charges, damage may result.

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

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

NOTE:

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

accurate to 3 decimal places, and with an up-to-date calibration certificate. When testing

resistance, always take the resistance of the DMM leads into account.

NOTE:

Where indicated in the tests, use a suitable oscilloscope. The Jaguar approved diagnostic tester

has an oscilloscope function in the "toolbox" menu.

NOTE:

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

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

before proceeding to the next step.

8 . If the cause is not visually evident, verify the symptom and refer to the diagnostic trouble code

(DTC) index.

Power Supply and Ground table

Module

Action

Instrument cluster (IC)

GO to Pinpoint Test G239843p23.

.

J-Gate module (JGM)

GO to Pinpoint Test G239843p31.

.

Air conditioning control module (A/CCM)

GO to Pinpoint Test G239843p32.

.

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Dynamic stability control control module (DSCCM)

GO to Pinpoint Test G239843p33.

.

Engine control module (ECM)

GO to Pinpoint Test G239843p19.

.

Transmission control module (TCM)

GO to Pinpoint Test G239843p34.

.

Adaptive speed control control module (ASCCM)

GO to Pinpoint Test G239843p35.

.

Air suspension control module (ASU)

GO to Pinpoint Test G239843p36.

.

ICE head unit (HU)

GO to Pinpoint Test G239843p12.

.

Rear electronic module (REM)

GO to Pinpoint Test G239843p14.

.

Front electronic module (FEM)

GO to Pinpoint Test G239843p13.

.

Rear memory module (RMM)

GO to Pinpoint Test G239843p15.

.

Navigation module (NAV)

GO to Pinpoint Test G239843p11.

.

Electronic park brake module (EPB)

GO to Pinpoint Test G239843p16.

.

Driver door control module (DDCM)

GO to Pinpoint Test G239843p17.

.

Driver seat control module (DSCM)

GO to Pinpoint Test G239843p18.

.

Parking aid control module (PACM)

GO to Pinpoint Test G239843p20.

.

Restraints control module (RCM)

GO to Pinpoint Test G239843p22.

.

Compact disc changer (CD)

GO to Pinpoint Test G239843p6.

.

Cellular phone module (CPM)

GO to Pinpoint Test G239843p8.

.

Voice module (VACM)

GO to Pinpoint Test G239843p9.

.

Rear entertainment system

GO to Pinpoint Test G239843p10.

.

Amplifier (AMP)

GO to Pinpoint Test G239843p7.

.

Driver Information Chart

NOTE:

Use this table to identify DTCs associated with the message center display, then refer to the DTC

index for possible sources and actions.

NOTE:

For definitions of default modes, see the foot of this table.

Warning

light

Message

Default Mode

DTC

Amber

Restricted performance, DSC fault, DSC

system fault

Engine speed limited, reverse throttle

progression enabled

P1637

Amber

Restricted performance

Engine speed limited, reverse throttle

progression enabled

P1638

Amber

Restricted performance

Engine speed limited, reverse throttle

progression enabled

P1642

Amber

Restricted performance

Engine speed limited, reverse throttle

progression enabled

P1643

Amber

Cruise not available

Cruise control inhibited

P1696

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