Jaguar XJ (X350). Manual — part 204

GO to Pinpoint Test

G295394t19

.

G295394t19 : CHECK THE HALL EFFECT SENSOR SIGNAL GROUND

1. Reconnect the battery negative terminal. 2. Measure the resistance between CV07, pin 05 (WU)

and GROUND.

•

Is the resistance greater than 5 ohms?

-> Yes

GO to Pinpoint Test

G295394t20

.

-> No

GO to Pinpoint Test

G295394t21

.

G295394t20 : CHECK THE HALL EFFECT SENSOR SIGNAL GROUND CIRCUIT
FOR HIGH RESISTANCE

1. Measure the resistance between CV07, pin 05 (WU) and CR32, pin 12 (WU).

•

Is the resistance greater than 5 ohms?

-> Yes

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

DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test

G295394t21

.

G295394t21 : CHECK THE HALL EFFECT SENSOR INPUT CIRCUIT FOR HIGH
RESISTANCE

1. Measure the resistance between CV07, pin 04 (YB) and CR32, pin 04 (YB).

•

Is the resistance greater than 5 ohms?

-> Yes

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

DTC. TEST the system for normal operation.

-> No

INSTALL a new hall effect sensor. (The hall effect sensor is not available separately).

Parking Brake Release Actuator - VIN Range: G00001->G03445 (70.35.45)

CLEAR the DTC. TEST the

system for normal operation. If the DTC is repeated, contact dealer technical support for advice on

possible EPB module failure.

Parking Brake - VIN Range: G45171-
>G99999

Principles of Operation

For a detailed description of the Parking Brake and Actuation, refer to the relevant Description and

Operation sections in the workshop manual.

Parking Brake - VIN Range: G45704->G99999

Inspection and Verification

1 . Verify the customer concern.

2 . Visually inspect for obvious signs of mechanical or electrical damage.

Mechanical

Electrical

•

Parking brake cable

•

Parking brake actuator

•

Parking brake caliper

•

Parking brake pads

•

Drop link caps

•

Fuses/Relays

•

Damaged, Loose or Corroded Connector(s)

•

Damage to Wiring Loom/Incorrect Location, Stretched or
Taught

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

before proceeding to the next step.

4 . If the cause is not visually evident use the Jaguar approved diagnostic system or a scan tool to

retrieve the fault codes before proceeding to the diagnostic trouble code (DTC) Index.

Symptom Chart

Symptom

Possible Sources

Action

The parking

brake will not

engage or

release

•

Cables fouled,
trapped or damaged

•

Cables incorrectly
routed or fixed

•

Rear lining wear

•

Service brake
incorrectly adjusted
following lining
change

•

Caliper malfunction

•

Actuator malfunction

•

Check the rear and primary cables for
fouling, trapping or damage

•

Check the cable routing between caliper and
subframe mountings. Make sure the cables
sit above the rear anti-roll bar drop link
caps, and that the drop link caps are not
damaged

•

Check that the rear cable end fitting
connector is correctly fitted into the caliper
bracket, and is not damaged

•

Check that the rear cable end fitting
connector is correctly fitted into the
subframe bracket and is not damaged

•

Check the 'C' clip between the cable and the

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subframe for fit/damage

•

Check that the cable is correctly located into
the reaction and connector brackets

•

Inspect the rear brake linings (parking brake
caliper linings for vehicles with
supercharger) for wear

•

Check the parking brake cable for correct
adjustment

•

Fully retract the cables. Pump the brake
pedal hard five times

•

Check the condition of the rear caliper
(parking brake caliper for vehicles with
supercharger). Make sure the caliper return
spring is correctly fitted

•

Check the actuator for damage and/or
excessive noise in normal operation

•

For additional information,

Parking Brake Cable Tension Release - VIN
Range: G45704->G99999

Parking Brake Pads - Vehicles With: High
Performance Brakes (70.40.04)

Parking Brake Rear Cables

Parking Brake Module - VIN Range: G45704-
>G99999 (70.35.47)

Parking Brake Release Actuator - VIN Range:
G03446->H99999 (70.35.45)

DTC index

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.

NOTE:

Generic scan tools may not read the codes listed, or may read only 5 digit codes. Match the five

digits from the scan tool to the first five digits of the seven digit code listed to identify the fault

(the last two digits give additional information read by the manufacturer approved diagnostic

system).

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 resistance, always

take the resistance of the DMM leads into account.

NOTE:

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

NOTE:

Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.

NOTE:

If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an

intermittent concern may be the cause. Always check for loose connections and corroded

terminals.

DTC

Description

Possible cause

Action

B131700 Battery Voltage High

•

Parking brake module -
supply voltage high
(above 18 volts)
Generator voltage is
regulated by the engine
control module

Refer to electrical circuit diagrams

and check parking brake module

power circuit for fault

B131800 Battery Voltage Low

•

Parking brake module -
supply voltage low
(below 8 volts)
Generator voltage is
regulated by the engine
control module

Refer to electrical circuit diagrams

and check parking brake module

power and ground circuit for fault

B134200 ECU is defective

•

Parking brake module -
internal fault

Suspect the module, check and

install a parking brake module as

required, refer to the new module

installation note at the top of the

DTC Index

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