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

1. Verify the customer concern
2. Visually inspect for obvious signs of mechanical or electrical damage

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

SYMPTOM CHART

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