Land Rover Discovery: Battery, Mounting and Cables Diagnosis and Testing Battery

PRINCIPLES OF OPERATION

For a detailed description of the battery system and operation, refer to the relevant Description and Operation section of the workshop manual REFER to: Battery and Cables (414-01 Battery, Mounting and Cables, 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 checked and/or the donor vehicle.

NOTES:

• Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give additional information read by the manufacturerapproved diagnostic system).
• 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.
• If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause.

  Always check for loose connections and corroded terminals.

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 check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index
5. 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

DIAGNOSTIC PROCEDURES FOR DTC B11 DB - 87 ( BATTERY MONITORING MODULE " A " - MISSING MESSAGE )

NOTES:

• These diagnostics only apply to vehicles fitted with a Gateway Module.
• If DTC B11DB-87 is flagged but a "charge system fault" warning / light is not present on the instrument cluster, then the likelihood is that the Battery Monitoring System Control Module is NOT the faulty part.

If a vehicle is presented with DTC B11DB-87 logged, follow the diagnostic routine below BEFORE replacing the Battery Monitoring System Control Module:

FURTHER BATTERY DIAGNOSTICS

For further guidance in diagnosing battery issues, refer to the battery diagnostics instructions for the Midtronics GRX-3080 / EXP-1080 / GR8- 1180 Diagnostic Battery Chargers in this section

DTC INDEX

For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section 100-00.

Battery, mounting and cables specifications

General Specification - Stop-start and timed climate models:

General Specification - All except stop-start and timed climate models

 Battery Disconnect/Connect

CAUTION:

The vehicle status must be established before attempting battery disconnect/connect. Reference must be then made to the following table to establish the relevant procedure to be followed.

NOTE:

Make a note of the customers radio preset stations.

CAUTION:

ENSURE THE CLAMPING LUG ON THE BMS IS BELOW THE TOP OF THE NEGATIVE TERMINAL POST AS SHOWN.

Procedure 1

NOTE:

If a new battery is installed, the battery monitoring system (BMS) must be reset using Land Rover approved diagnostic equipment

Procedure 2

NOTE:

If a new battery is installed, the battery monitoring system (BMS) must be reset using Land Rover approved diagnostic equipment.

Torque Specifications

Battery, Mounting and Cables/ Description and OperationGeneral Information Battery Support Unit Connection Procedure

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