Land Rover Defender: Warning Devices - Diagnosis and Testing
DIAGNOSIS AND TESTING
PRINCIPLES OF OPERATION
For a detailed description of the side obstacle detection system, refer to
the relevant Description and Operation
section in the workshop manual.
INSPECTION AND VERIFICATION
CAUTION:
Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution
of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the
vehicle being tested and/or the
donor vehicle.
NOTES:
- If a control module or a component may be at fault and the vehicle
remains under manufacturer warranty,
refer to the Warranty Policy and Procedures manual, or determine if any
prior approval program is in
operation, prior to the installation of a new module/component.
- When performing voltage or resistance tests, always use a digital
multimeter that has the resolution ability
to view 3 decimal places. For example, on the 2 volts range can measure 1mV
or 2 K Ohm range can
measure 1 Ohm. When testing resistance always take the resistance of the
digital multimeter leads into
account.
- Check and rectify basic faults before beginning diagnostic routines
involving pinpoint tests.
- Verify the customer concern
- Visually inspect for obvious signs of damage and system integrity
Visual Inspection
- If an obvious cause for an observed or reported concern is found,
correct the cause (if possible) before
proceeding to the next step
- If the cause is not visually evident, verify the symptom and refer to
the Symptom Chart, alternatively check for
Diagnostic Trouble Code(s) (DTC)s and refer to the DTC Index
- Check JLR claims submission system for open campaigns. Refer to the
corresponding bulletins and SSMs
which may be valid for the specific customer complaint and complete the
recommendations as required
SYMPTOM CHART
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GENERAL PROCEDURES
SYNCHRONIZATION
NOTES:
For Diesel vehicles and depending on the specification, this
procedure will only reset the oil dilution
counter after a service.
To reset the time and d
REMOVAL AND INSTALLATION
REMOVAL
NOTE:
This procedure contains illustrations showing certain components
removed to provide extra clarity.
This procedure contains some variation in the illustratio
REMOVAL AND INSTALLATION
GENERAL EQUIPMENT
REMOVAL
CAUTIONS:
Use a suitable trim tool.
Care must be taken to avoid damaging the surrounding components.
Take extra care when removing the component
SEE MORE:
CONTROL DIAGRAM - 1 OF 3 - DOOR MIRRORS
A = HARDWIRED: O = LIN: AX = FLEXRAY: AZ = HS CAN BODY SYSTEMS BUS.
DDM
PCM
TCM
Transfer Case Control Module (TCCM)
BCM/ GWM
DSM
PDM
Passenger door mirror
Driver door mirror
Ground
Power supply
Seat memory switchpack
Driver door switchpack
AAT
REMOVAL AND INSTALLATION
REMOVAL
NOTE:
This procedure contains some variation in the illustrations depending
on the vehicle specification, but the
essential information is always correct.
This procedure contains illustrations showing certain components
removed to provide extra clarity.
This
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