Land Rover Defender: Charging System
DIAGNOSIS AND TESTING
PRINCIPLE OF OPERATION
For a detailed description of the charging system and operation, refer to the relevant description and operation section of the workshop manual.
Battery Care Requirements (Description and Operation), Quiescent Drain (Description and Operation).
PRINCIPLE OF OPERATION
For a detailed description of the generator and regulator system and operation, refer to the relevant description and operation section of the workshop manual. Generator and Regulator
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 checked and/or the donor vehicle
NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests
- Verify the customer concern
- Visually inspect for obvious signs of mechanical or electrical damage
Visual Inspection
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- 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
SYMPTOM CHART
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Battery Support Unit Connection Procedure
GENERAL PROCEDURES
CONNECT
WARNINGS:
Do not smoke or carry lighted tobacco or open flame of any type when
working on or near the vehicles
battery. Highly flammable vapors may be present and ignit
Showroom Support Unit Connection Procedure
GENERAL PROCEDURES
GENERAL EQUIPMENT
CONNECT
WARNINGS:
Do not smoke or carry lighted tobacco or open flame of any type when
working on or near the vehicle
battery. Highly flamable vapors may be
Startup Battery Disconnect and Connect
GENERAL PROCEDURES
CHECK
NOTE:
This procedure contains some variation in the illustrations depending
on the vehicle specification, but the
essential information is always correct.
This procedure
SEE MORE:
Headlamp Assembly
REMOVAL AND INSTALLATION
REMOVAL
CAUTIONS:
Protect the surrounding paintwork to avoid damage.
Protect the surrounding trim to avoid damage.
Before disconnecting any components, make sure the area is clean and
free from foreign material. When
disconnected all openings must be sealed.
NOTES:
Operation
POWER FLOWS
Operation of the transmission is controlled by the TCM, which electrically
activates various solenoids to control the
transmission gear selection. The sequence of solenoid activation is based on
programed information in the TCM
memory and physical transmission operating conditions such
