Jaguar XJ (X350). Manual — part 1442

No driver seat movement
from driver switch-pack
(including no memory
recall).

•

Driver Seat Module
has gone into sleep
mode.

Switch ignition ON. Check seat
functions from switch packs.

No driver seat axis or driver
lumbar movement from
driver switch-pack.

•

No power or ground
to driver seat switch-
pack.

Check Rear Power Distribution
Board (RPBD) fuse F16. Check
power/ground circuits.

No driver seat axis or driver
lumbar movement from
driver switch-pack.

•

No power or ground
to driver seat module.

Check DSM power fuses and
power/ground circuits, refer to
circuit diagram.

No individual driver seat
axis movement
(headrest/rear
height/squab/front
height/cushion
extend/slide/lumbar) from
driver seat switch-pack.

•

Switch-pack open
circuit.

Check switch-pack wiring. Refer
to circuit diagram.

No individual driver seat
axis movement
(headrest/rear
height/squab/front
height/cushion
extend/slide/lumbar) from
driver seat switch-pack.

•

Switch-pack short
circuit to power.

Check for DSM DTC B2147,
fault PID A103 indicates affected
axis.

No memory recall function
however driver seat axis
and driver seat lumbar
functions correctly.

•

DDM (Driver Door
Module).

With ignition in RUN press
memory set button (M button, the
red LED should light up for 5
seconds), during this 5 second
period if a 1, 2 or 3 button is
pressed to save a memory
position a chime should be heard
and the LED extinguished. If this
does not happen check the
following, Check for DDM DTC
B1529 Memory Set Switch
Circuit Short To Battery. Check
for DDM DTC B1530 Memory
Set Switch Circuit Short To
Ground. Check for DDM DTC
B2084 Memory Set Indicator
Short To Ground for switch-pack
connectivity issues. Check the
SCP connections between the
DDM and the Instrument cluster
and Driver Seat Module.

No memory recall or
memory save operations at

•

DDM power/ground

Check DDM logic/power/ground
circuits. Refer to circuit diagram.

all however driver seat axis
and driver seat lumbar
functions correctly.

connectivity issue.

No seat memory recall or
save function however
driver seat axis and driver
seat lumbar functions
correctly.

•

DSM SCP
connectivity issue.

Check SCP bus is connected to
DSM. Refer to circuit diagram.

No seat memory recall
function however memory
save function appears to be
ok and driver seat axis and
driver seat lumbar functions
correctly.

•

A seat axis has gone
out of calibration.

Check for DSM DTC A309. Fault
PID A106 will indicate affected
axis. If DTC A309 is present the
affected axis has gone out of
calibration. Therefore run the
Driver Seat recalibration routine
via IDS. Note, always ignore
DSM DTC 9940 and do not
recalibrate when this DTC is
detected.

Easy Entry Exit does not
function at all.

•

Easy Entry Exit not
enabled via column
adjust switch.

Turn the column adjust switch to
Auto position to enable Easy
Entry Exit.

Easy Entry Exit does not
function on the Driver Seat,
either on the Height axis or
the Fore/Aft axis (or both).
But it does function on the
Steering column.

•

Either the Driver Seat
Fore/Aft axis or the
Driver Seat Height
axis has gone out of
calibration.

Check for DSM DTC A309. Fault
PID A106 will indicate affected
axis. If DTC A309 is present the
affected axis has gone out of
calibration. Therefore run the
Driver Seat recalibration routine
via IDS. Note, always ignore
DSM DTC 9940 and do not
recalibrate when this DTC is
detected.

A Driver Seat axis
repeatedly goes out of
calibration even after an
IDS Driver Seat re-
calibration. The affected
axis can be identified from
DTC A309 in conjunction
with fault PID A106.

•

Incorrect Driver Seat
Module fitted to the
X358 vehicle. X358
XJ vehicles are fitted
with new Driver Seat
which has longer axis
lengths. Therefore
correct Driver Seat
Module needs to be
fitted to these new
seats.

Ensure that the following Driver
Seat Modules are fitted to X358
XJ Driver X358 DSM part
numbers 8 way DSM 8W9F-
14C708-DH 10 way DSM 8W9F-
14C708-AH 12 way DSM 8W9F-
14C708-CH DSM part number
(pre- X358) 8 way DSM 2W9F-
13C789-DH 10 way DSM 2W9F-
13C789-AH 12 way DSM 2W9F-
13C789-CH Note to Service, the
X358 DSMs listed above can be
fitted to pre X358 XJ Memory
Driver Seats (X350) and S Type
Memory Driver Seats (2002.5MY
onwards). These later DSMs are

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therefore backward compatible
however older DSMs part
numbers listed above (pre-X358)
can not be fitted to the new X358
XJ memory Driver Seats.

Front seat fore/aft
movement not functioning

•

Carry out the pinpoint
test associated to this
Symptom

GO to Pinpoint Test
G1034557p1.

Front seat excessive fore/aft
free play

•

Carry out the pinpoint
test associated to this
Symptom

GO to Pinpoint Test
G1034557p2.

Front seat fore/aft
movement noisy

•

Carry out the pinpoint
test associated to this
Symptom

GO to Pinpoint Test
G1034557p3.

Front seat height, tilt and/or
seat extension motor
movement not functioning

•

Carry out the pinpoint
test associated to this
Symptom

GO to Pinpoint Test
G1034557p4.

Front seat height, tilt and/or
extension movement noisy

•

Carry out the pinpoint
test associated to this
Symptom

GO to Pinpoint Test
G1034557p5.

Rear Memory Module failure modes Symptom Chart

Symptom

Possible Cause

Action

No rear seat movement from
rear seat switch-pack (including
no memory recall).

•

Rear Memory
Module has
gone into sleep
mode.

Switch ignition ON. Check seat
functions from switch packs.
Ensure rear passenger lock out
button (on driver window switch
pack) is off.

No rear seat axis or rear lumbar
movement from rear switch-
pack.

•

No power or
ground to rear
seat switch-
pack.

Check fuse. Check power/ground
circuits.

No individual rear seat axis
movement
(headrest/squab/lumbar) from
rear seat switch-pack.

•

Switch-pack
open circuit.

Check switch-pack wiring. Refer to
circuit diagram.

No individual rear seat axis
movement (headrest/squab)

•

Switch-pack
short circuit to

Check for Rear Memory Control
Module (REAR MEMORY

from rear seat switch-pack.

power.

CONTROL MODULE (RMM)
DTC B2171/B2173, fault PIDs
A104/A105 indicates affected axis.

No rear memory recall or rear
memory save operations at all
however rear seat axis or rear
seat lumbar functions correctly.

•

Rear memory
switchpack
connectivity
issue.

Monitor REAR MEMORY
CONTROL MODULE (RMM)
fault PID A501whilst pressing the
appropriate rear memory switches
to confirm connectivity.

No rear seat memory recall or
save function.

•

REAR
MEMORY
CONTROL
MODULE
(RMM) SCP
connectivity
issue.

Check SCP bus is connected to
REAR MEMORY CONTROL
MODULE (RMM). Refer to circuit
diagram.

No rear seat memory recall
function however memory save
function appears to be ok and
rear seat axis and rear seat
lumbar functions correctly.

•

A seat axis has
gone out of
calibration.

Check for REAR MEMORY
CONTROL MODULE (RMM)
DTC A309. Fault PID A106 will
indicate affected axis. If DTC A309
is present the affected axis has gone
out of calibration. Therefore run the
Rear Seat recalibration routine via
IDS. Note, always ignore REAR
MEMORY CONTROL MODULE
(RMM) DTC 9940 and do not
recalibrate when this DTC is
detected.

DTC Index

Drivers Seat/Rear Memory 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

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