Workshop Manuals Factory service & repair Land Rover
01 Discovery Workshop Manual - 2nd Edition02 01 - INTRODUCTION03 04 - GENERAL SPECIFICATION DATA04 05 - ENGINE TUNING DATA05 07 - GENERAL FITTING REMINDERS06 09 - LUBRICANTS, FLUIDS AND CAPACITIES07 10 - MAINTENANCE08 12 - ENGINE - Tdi09 10 11 12 12 - ENGINE - V8i13 12 - ENGINE - 4.0 V814 12 - ENGINE - Mpi15 16 17 18 17 - EMISSION CONTROL19 19 - FUEL SYSTEM - Tdi20 19 - FUEL SYSTEM - MFI21 19 - FUEL SYSTEM - SFI22 19 - FUEL SYSTEM - Mpi23 19 - FUEL SYSTEM - Cruise Control24 26 - COOLING SYSTEM - Tdi25 26 - COOLING SYSTEM - V8i26 26 - COOLING SYSTEM - Mpi27 28 30 - MANIFOLD AND EXHAUST SYSTEM29 33 - CLUTCH30 37 - MANUAL GEARBOX - R38031 41 - TRANSFER GEARBOX32 44 - AUTOMATIC GEARBOX - ZF33 34 35 47 - PROPELLER SHAFTS36 51 - REAR AXLE AND FINAL DRIVE37 38 54 - FRONT AXLE AND FINAL DRIVE39 40 41 57 - STEERING42 43 44 60 - FRONT SUSPENSION45 64 - REAR SUSPENSION46 70 - BRAKES47 74 - WHEELS AND TYRES48 75 - SUPPLEMENTARY RESTRAINT SYSTEM49 76 - CHASSIS AND BODY50 51 80 - HEATING AND VENTILATION52 82 - AIR CONDITIONING53 84 - WIPERS AND WASHERS54 86 - ELECTRICAL
Land Rover 300Tdi Discovery46 · 70 - BRAKES
46 · Brakes

RELAYS AND FUSES ABS

Make
Land Rover
Model
Discovery 300Tdi Discovery
Section
FAULT DIAGNOSIS › RELAYS AND FUSES ABS
70 - BRAKESRELAYS AND FUSES ABS
background image

BRAKES

1

FAULT DIAGNOSIS

ABS FAULT DIAGNOSIS

If a fault has occurred, or has been identified by ECU
self diagnostic function and ABS warning light is
illuminated. The system and components must be
checked to locate and rectify fault, using Testbook
diagnostics.

NOTE: If warning lamp has indicated a
fault in system, and no fault code has been
stored in memory, cause of fault is:

a)

Failure in electrical supply

b)

Bad ECU ground

c)

Faulty warning light relay

d)

ECU not connected

Before commencing fault diagnosis procedure
following items must be checked:

1. Inspect all exposed cables for damage or

abrasion.

2. Check ground on ABS system.
3. Battery - state of charge.
4. Check hub end-float.
5. All ABS fuses and electrical connections.

Fault rectification

1. Complete harness should be replaced if faults

are found in wiring harness.

2. DO NOT use unspecified cables or connectors,

as this could jeopardise safe function of ABS.

3. DO NOT attempt to open sealed 35 way

connector to ECU.

FAULT DIAGNOSIS PROCEDURE

NOTE: If ABS warning light illuminates due
to large sensor air gap, fault will be
retained by the ECU memory. Where wheel

sensors have been pushed fully home prior to
test, The ECU will indicate a fault that has been
rectified.

NOTE: After any steering adjustment,
bearing replacement/adjustment, brake
disc replacement: Check hub end-float and

sensor clearance.

RELAYS AND FUSES ABS

The location and identification of ABS electrical relays
are given in the Electrical Troubleshooting Manual

For location and identification of ABS electrical fuses.
See ELECTRICAL, Repair, Fuse Box - Interior or.
See ELECTRICAL, Repair, Fuse Box - Engine
Compartment

Parts & tools for this job Staging For Land Rover Discovery

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.