Land Rover Defender: Seats - Vehicles With: Lumbar/Massage

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 (section B1.2), 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.

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 Codes (DTCs) and refer to the DTC Index
5. 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 CHARTS

2-Way Lumbar - Non-memory Front Seats

NOTE: The Lumbar/Massage solenoid block is installed with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure.

4-Way Lumbar and Bolster - Non-memory Front Seats

NOTE: The Lumbar/Massage solenoid block is installed with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure.

4-Way Lumbar and Bolster - Memory Front Seats

NOTE: The Lumbar/Massage solenoid block is installed with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure.

4-Way Lumbar, Bolster and Massage - Front Seats

NOTE: The Lumbar/Massage solenoid block is installed with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure.

ON DEMAND SELF TEST (ODST)

The On Demand Self Test (ODST) is performed using the Jaguar Land Rover approved diagnostic equipment as follows:

1. Begin a Diagnostic session
2. Select 'Body'
3. Select 'Seating'
4. Select the relevant seat
5. Run the On Demand Self Test (ODST) application

PINPOINT TESTS

PINPOINT TEST A : SEAT SWITCHPACK TESTS

PINPOINT TEST B : 2-WAY LUMBAR INFLATE TESTS

PINPOINT TEST C : 2-WAY LUMBAR DEFLATE TESTS

PINPOINT TEST D : 4-WAY LUMBAR AND BOLSTER INFLATE TESTS

PINPOINT TEST E : 4-WAY LUMBAR FORWARD TESTS

PINPOINT TEST F : 4-WAY LUMBAR REARWARD TESTS

PINPOINT TEST G : 4-WAY LUMBAR UP TESTS

PINPOINT TEST H : 4-WAY LUMBAR DOWN TESTS

PINPOINT TEST I : BOLSTER INFLATE TESTS

PINPOINT TEST J : BOLSTER DEFLATE TESTS

PINPOINT TEST K : MEMORY SEAT BOLSTER INFLATE TESTS

PINPOINT TEST L : MEMORY SEAT BOLSTER DEFLATE TESTS

PINPOINT TEST M : MASSAGE SEAT TESTS

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