Land Rover Defender: Daytime Running Lamps - Diagnosis and Testing
DIAGNOSIS AND TESTING
PRINCIPLES OF OPERATION
For a detailed description of the Daytime Running Lamps, refer to the
relevant Description and Operation section in
the workshop manual. REFER to: Daytime Running Lamps (Daytime Running Lamps,
Description and
Operation).
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 accurate to three decimal
places, and with an up-to-date calibration certificate. 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 Codes (DTCs) 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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SPECIFICATIONS
Torque Specifications
COMPONENT TORQUE LOCATION
Torque Specifications
COMPONENT TORQUE LOCATION
DESCRIPTION AND OPERATION
COMPONENT LOCATION
COMPONENT LOCATION - 1 OF 4
NOTE:
Right Hand Drive (RHD) vehicle is shown, Left Hand Drive (LHD) vehicle is
similar.
Cruise Control Module (CCM)
Headl
SEE MORE:
DIAGNOSIS AND TESTING
PRINCIPLES OF OPERATION
For a detailed description of the Integrated Power Brake 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. Subst
REMOVAL AND INSTALLATION
REMOVAL
NOTES:
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.
1.
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