Land Rover Discovery Owners & Service Manuals

Land Rover Discovery: Autolamps

PRINCIPLES OF OPERATION

For a detailed description of the Autolamps, refer to the relevant Description and Operation section in the workshop manual. REFER to: Exterior Lighting (417-01 Exterior Lighting, 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 is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual, or determine if any prior approval programme 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.
  1. Verify the customer concern
  2. Visually inspect for obvious signs of damage and system integrity

Visual Inspection

Visual Inspection

  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
  2. 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
  3. Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific customer complaint and carry out the recommendations as required

SYMPTOM CHART

SYMPTOM CHART

SYMPTOM:

Side, tail and headlamp inoperative when the lighting control switch is set to auto

POSSIBLE CAUSES:

  • Body system fault
  • Lighting control switch fault

ACTION:

  • Using the Jaguar Land Rover approved diagnostic equipment, check the central junction box for related DTCs and refer to the relevant DTC index
  • Install a new lighting control switch

DTC INDEX

For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section 100-00. REFER to: Diagnostic Trouble Code Index - DTC: Central Junction Box (CJB) (100-00 General Information, Description and Operation).

READ NEXT:

 Daytime Running Lamps / Description and Operation

OVERVIEW The Daytime Running Lamps (DRL) and side lamps are incorporated into the headlamp assemblies. For additional information, refer to: Exterior Lighting (417-01, Description and Operation). On

 Daytime Running Lamps / 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 (417-04

 Interior Lighting / Description and Operation

COMPONENT LOCATION - SHEET 1 OF 2 Central Junction Box (CJB) Instrument panel illumination Approach lamp - door mirror Door ambience lighting Light Emitting Diodes (LEDs) Luggage compartment a

SEE MORE:

 Manual Transmission Transaxle / Description and Operation

COMPONENT LOCATION Selector lever assembly Manual transmission OVERVIEW The ME66EH50 manual transmission is a 6 speed unit. The transmission is a highly compact 4 shaft design, incorporating the front final drive gear. The transmission is capable of transferring high torque from the engine to

 Towing Points

CAUTION: The single towing points at the front and rear of the vehicle are designed for vehicle recovery purposes only and must NOT be used to tow a trailer or caravan. The front towing eye is accessible after releasing and removing the towing eye access panel. CAUTION: Make sure that during towi

© 2019-2024 Copyright www.lrdisc.com