Jaguar XJ (X350). Manual — part 240

GROUND or B+

•

Yaw rate/lateral
accelerometer sensor
cluster failure

C1280

Yaw rate sensor signal

failure

•

Sensor loose, not mounted
correctly

•

Yaw rate/lateral
accelerometer sensor
cluster failure

Refer to visual inspection

chart. Check sensor fitment.

Refer to dealer technical

support for advice on possible

sensor failure.

C1281

Lateral accelerometer

sensor circuit failure

•

Connector pins bent or
corroded

•

Sensor wiring damaged

•

Yaw rate/lateral
accelerometer sensor
cluster failure

For lateral/yaw rate sensor

circuit tests, GO to Pinpoint

Test

G307559p7

.

C1282

Lateral accelerometer

sensor signal failure

•

Sensor loose, not mounted
correctly

•

Yaw rate/lateral
accelerometer sensor
cluster failure

Refer to visual inspection

chart. Check sensor fitment.

Refer to dealer technical

support for advice on possible

sensor failure.

C1285

Booster solenoid circuit

failure

•

Booster solenoid circuit
open circuit, short circuit to
GROUND

•

Booster solenoid failure

For booster solenoid circuit

tests, GO to Pinpoint Test

G307559p8

.

C1286

Booster mechanical

failure

•

Brake light switch
incorrectly calibrated

•

Pedal force switch open
circuit, short circuit to
GROUND

•

Pedal force switch failure

•

Active brake booster
mechanical failure

•

ABS/DSC module failure

Contact dealer technical

support for advice on brake

pedal position switch

calibration procedure. For

pedal force switch tests, GO to

Pinpoint Test

G307559p10

.

Contact dealer technical

support for advice on possible

active brake booster or

ABS/DSC module failure.

C1287

Booster pedal force

switch circuit failure

•

Booster pedal force switch
open circuit, short circuit to
GROUND or B+

•

Booster pedal force switch
failure

For pedal force switch tests,

GO to Pinpoint Test

G307559p10

.

C1288

Pressure sensor

main/primary input

circuit failure

•

Brake pressure circuit open
circuit, short circuit to
GROUND or B+

•

Connector pins bent or
corroded

•

Damaged harness/wiring

•

Sensor failure

•

ABS/DSC module failure

For pressure sensor circuit

tests, GO to Pinpoint Test

G307559p11

.

C1295

Steering angle sensor

internal failure

•

Steering angle signal open
circuit, short circuit to
GROUND or B+, high
resistance

•

Sensor loose

•

Encoder ring contaminated

•

Sensor failure

For SA sensor circuit tests, GO

to Pinpoint Test

G307559p6

.

Check sensor fitment, check

encoder ring for debris.

C1306

Steering angle sensor–

no center found during

initialization

•

Steering angle sensor — no
center found within time
limits

Check for associated DTCs.

Reinitialize the sensor by

turning the ignition to the OFF

position, then back ON without

turning the steering wheel.

C1307

Steering wheel angle

sensor encoder ring

failure

•

Loose or damaged encoder
ring

•

Steering angle sensor failure

•

Signal wires shorted
together

Check the security and

condition of the steering angle

sensor encoder ring. Check

encoder ring for debris. For SA

sensor circuit tests, GO to

Pinpoint Test

G307559p6

.

C1440

Brake pressure sensor

signal fault

•

Pressure sensor signal
circuit open circuit, short
circuit to GROUND or B+

•

Brake pressure sensor
failure

For pressure sensor circuit

tests, GO to Pinpoint Test

G307559p11

.

C1446

Brake switch circuit

failure

•

Brake light switch signal
failure

•

Mechanical switch failure

For brake light switch circuit

tests, GO to Pinpoint Test

G307559p12

.

C1730

Sensor supply voltage

out of range (+5 volt)

•

Sensor supply voltage circuit
short circuit to GROUND or
B+

•

Defective sensor

•

ABS/DSC module failure

For sensor power and

GROUND circuit tests,

<<418-

00>>

Contact dealer technical

support for advice on possible

ABS/DSC module failure.

www.

C1777

Vacuum pressure

circuit failure

•

Mechanical failure in active
booster unit

•

ABS/DSC module failure

CLEAR the DTC. TEST the

system for normal operation. If

the DTC is repeated, contact

dealer technical support for

advice on possible active

booster or ABS/DSC module

failure.

C1994

DSC continuous

operation fault

•

Yaw rate sensor cluster
failure

Contact dealer technical

support for advice on possible

yaw rate sensor cluster failure.

C1997

Pressure controller

failure

•

Booster solenoid
open/short circuit, short
circuit to GROUND or B+,
high resistance

•

Booster solenoid failure

•

Pressure sensor signal
open/short circuit, short
circuit to GROUND or B+,
high resistance

•

Pressure sensor failure

For booster solenoid circuit

tests, GO to Pinpoint Test

G307559p8

.

For pressure sensor circuit

tests, GO to Pinpoint Test

G307559p11

.

C2778

Yaw rate/Lateral

accelerometer sensor

cluster power supply

failure

•

Sensor power supply
voltage open circuit, short
circuit to GROUND or B+

•

ABS/DSC module failure

For lateral/yaw rate sensor

circuit tests, GO to Pinpoint

Test

G307559p7

.

Contact dealer technical

support for advice on possible

ABS/DSC module failure.

C2783 Sensor cluster incorrect

•

Incorrect yaw rate/lateral
accelerometer sensor
cluster fitted

Contact dealer technical

support for advice on possible

yaw rate sensor cluster failure.

C2785

Yaw rate/Lateral

accelerometer

sensor(s) out of

calibration

•

Yaw rate/Lateral
accelerometer sensor
cluster not calibrated

Contact dealer technical

support for advice on

recalibration of the yaw rate

sensor cluster.

B1231

Longitudinal

acceleration threshold

exceeded

•

Check brake
hydraulic/mechanical
function/condition

•

Pressure sensor failure

•

ACC failure

•

Hydraulic unit failure

•

Mechanical failure in
booster actuation unit

Carry out a full vehicle DTC

check. Check for DTC P1696 as

an indication of an ACC system

fault. For pressure sensor

circuit tests, GO to Pinpoint

Test

G307559p11

.

For vacuum circuit tests refer

•

Brake booster vacuum low

•

Brake booster failure

to inspection and verification.

Contact dealer technical

support for further advice.

B1317

Supply voltage out of

range (HIGH)

•

Charging system failure

•

ABS/DSC module GROUND
fault

Check the battery condition

and charging system,

<<414-

00>>

<<414-01>>

B1318

Supply voltage out of

range (LOW)

•

Battery failure, loose
connections

•

Charging system failure

•

ABS/DSC module positive
supply fault

Check the battery condition

and charging system,

<<414-

00>>

<<414-01>>

B1342

ABC/DSC module

failure

•

ABS/DSC module failure

Contact dealer technical

support for advice on possible

ABS/DSC module failure

B2141

NVM configuration

failure

•

No or invalid vehicle
configuration information
received from the ECM and
stored in EEPROM

Reconfigure the ECM

<<418-

00>>

B2736

Pedal travel sensor

circuit failure

•

Pedal travel sensor circuit:
open circuit, short circuit to
GROUND or B+, high
resistance, signal wires
short circuit to each other

For pedal travel sensor tests,

GO to Pinpoint Test

G307559p9

.

B2739

Pedal travel sensor

signal circuit failure

•

Connector pins bent or
corroded

•

Pedal travel sensor signal
failure; open circuit, short
circuit to GROUND or B+,
high resistance

•

Pedal travel sensor failure

•

ABS/DSC module failure

For pedal travel sensor tests,

GO to Pinpoint Test

G307559p9

.

B2741

Yaw rate/Lateral

accelerometer sensor

cluster fault

•

Yaw rate/Lateral
accelerometer sensor
cluster failure

Contact dealer technical

support for advice on possible

yaw rate sensor failure.

U1901

Local CAN yaw

rate/lateral

accelerometer sensor

cluster communication

•

Local CAN fault

•

Control module internal
local CAN failure

•

Yaw rate/Lateral
accelerometer sensor

For CAN module circuit tests,

<<418-00>>

Contact dealer

technical support for advice on

possible yaw rate sensor

www.