Jaguar XJ (X350). Manual — part 247

DTC. TEST the system for normal operation.

-> No

INSTALL a new brake light switch. CLEAR the DTC. TEST the system for normal operation.

Anti-Lock Control - Stability Assist - VIN
Range: G45704->G99999

Overview

There are some changes for 2006 my, the most obvious of which when diagnosing the system is the

change to 7-digit diagnostic trouble codes (DTCs) from the familiar 5-digit.

Refer to the DTC index in this section for guidance on how to use these codes with the Jaguar

approved diagnostic system or a scan tool.

For information on the operation of the system,

Anti-Lock Control - Stability Assist - VIN Range: G45704->G99999

Inspection and Verification

1 . Verify the customer concern.

2 . Confirm if the ABS warning light was illuminated, or still is.

NOTE:

An intermittent fault may allow the warning light to go off. This does not necessarily mean the

fault is not present. Some warnings will appear to clear when the ignition is cycled. This is often

because the warning has flagged as a result of one of the vehicle's on-board diagnostic routines

having run to detect the fault. If the same routine is not run when the ignition is switched ON,

the warning will not reflag until the routine does run.

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

Mechanical

Electrical

•

Brake fluid level

•

Vacuum system

•

Wheel speed sensor (WSS) fitment

•

WSS air gap

•

WSS ring(s) (missing or damaged
teeth/contamination)

•

Steering wheel rotation sensor

•

Yaw rate sensor and accelerometer cluster
fitment

•

Incorrect wheel or tire size

•

Warning light operation

•

Fuses (see table)

•

Wheel speed sensors

•

Connectors/Pins

•

Harnesses

•

Steering wheel rotation sensor

•

Yaw rate sensor and accelerometer
cluster

•

Booster pressure sensor

•

Hydraulic control module (HCU)

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

before proceeding to the next step.

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5 . 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 DTC index chart.

Fuse Identification Table

Location

Fuse Number Rating

Circuit

Front power distribution fuse box 20

30 Amp HCU pump battery supply

Front power distribution fuse box 03

5 Amp

HCU module battery supply

Front power distribution fuse box 22

15 Amp HCU valve battery supply

Primary junction fuse box

17

5 Amp

HCU module ignition supply

DTC Index

NOTE:

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

digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last

2 digits give extra information read by the manufacturer-approved diagnostic system).

DTC

Description

Possible cause

Action

C000101

Traction control

switch (TCS)

control channel A

valve 1

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C000201

Traction control

switch (TCS)

control channel A

valve 2

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C000301

Traction control

switch (TCS)

control channel B

valve 1

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C000401

Traction control

switch (TCS)

control channel B

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

valve 2

suspect.

C001001

Left hand front

outlet control

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C001101

Left hand front

outlet control

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C00117A

Left hand front

outlet control

•

Fluid leak

•

Seal failure

Check the brake fluid condition.

Check the hydraulic system for

leaks.

C001401

Right hand front

inlet control

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C001501

Right hand front

outlet control

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C00157A

Right hand front

outlet control

•

Internal HCU fault

Check the brake fluid condition.

Check the hydraulic system for

leaks.

C001801

Left hand rear

inlet control

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C001901

Left hand rear

outlet control

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C001C01

Right hand rear

inlet control

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C001D01

Right hand rear

outlet control

•

Internal HCU fault

Refer to the warranty policy and

procedures manual if a module is

suspect.

C002001 ABS pump motor

control - excessive

•

Power supply to pump
motor: short circuit

•

Power supply to pump
motor: incorrect voltage

Refer to the warranty policy and

procedures manual if a module is

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