Land Rover Defender: Seats

DIAGNOSIS AND TESTING

PRINCIPLES OF OPERATION

For a detailed description of the Seating system, refer to the relevant Description and Operation section in the workshop manual. REFER to: Seats - [+] 5 Seat Configuration (Seating, 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 the 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.

1. Verify the customer concern
2. Visually inspect for obvious signs of damage and system integrity

Visual Inspection

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for Diagnostic Trouble Code(s) and refer to the Diagnostic Trouble Code(s) (DTC) Index
5. Check the 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

SEAT MOVEMENT INHIBITION CHECKS

If the customer is reporting issues with seat movements, first consult the table below to check if the seat movement functions may have been inhibited. If the issue cannot be rectified, proceed to the pinpoint tests below:

SYMPTOM CHARTS

Electrical Adjustment - Front Seats

PINPOINT TESTS

PINPOINT TEST A : FRONT SEAT FORE/AFT MOVEMENT NOT FUNCTIONING

PINPOINT TEST B : FRONT SEAT FEELS LOOSE/ROCKS/CLICKS

PINPOINT TEST C : FRONT SEAT EXCESSIVE FORWARD-REARWARD FREE PLAY

PINPOINT TEST D : FRONT SEAT FORWARD-REARWARD MOVEMENT NOISY

PINPOINT TEST E : FRONT SEAT HEIGHT, TILT AND/OR SEAT EXTENSION MOTOR MOVEMENT NOT FUNCTIONING

PINPOINT TEST F : FRONT SEAT HEIGHT, TILT AND/OR EXTENSION MOVEMENT NOISY

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