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:
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.
Always check for loose connections and corroded terminals.
Visual Inspection
12 VOLT MIDTRONICS GRX - 3080 JLR DIAGNOSTIC BATTERY CHARGER USER GUIDE
The following steps must be carried out to ensure correct operation of the GRX-3080 JLR diagnostic battery charger during the battery test procedure
NOTE:
The GRX-3080 JLR diagnostic battery charger is suitable for testing flooded and absorbed glass mat (AGM) type batteries including Primary and Secondary batteries
Testing a Battery
Using the GRX-3080 JLR diagnostic battery charger, the following test procedure will confirm the serviceability of the battery (see Completing a Battery Test)
Battery Label Example
GRX-3080 JLR Diagnostic Battery Charger Display Keypad
The GRX-3080 JLR diagnostic battery charger has an integrated display and keypad, the display guides the user via onscreen navigation aids, directions and messages. The illustration (below) shows how the elements on the screen relate to the keypad and details the functions of the various keys:
Battery Test Types
Before performing any battery diagnostic on a vehicle, make sure the ignition is OFF and the vehicle is powered down, with the modules entering 'sleep mode' before commencing and with the hazard switch illumination extinguished The Midtronics GRX-3080 JLR diagnostic battery charger has three types of battery test (Diagnostic Charging, PDI / Storage and Battery Storage), one battery support function (Battery Support Power Supply) and one manual charging option available (Recovery Charging) for the technician to select:
DIAGNOSTIC CHARGING
1. The DIAGNOSTIC CHARGING test needs to be used on any battery that has started its warranty life cycle. The battery is in use and fitted to a vehicle registered to an owner. The GRX-3080 JLR diagnostic battery charger will determine the internal condition of a battery before attempting to apply a charge to it. If required, it will then charge and assess the battery until the battery condition is established and a test result is given
PDI / STORAGE
2. The PDI / STORAGE test needs to be used on any battery that has not yet been entered into the warranty life cycle. The battery is fitted to a NEW vehicle, but the vehicle has not yet been sold/registered to an owner. The GRX-3080 JLR diagnostic battery charger will determine the internal condition of a battery before attempting to apply a charge to it. If required, it will then charge and assess the battery until the battery condition is established and a test result is given
BATTERY STORAGE
3. The BATT. STORAGE test should be used on any battery that has not yet been entered into the warranty life cycle. The battery is not in use and is a Parts Stock battery and has not yet been fitted to a vehicle. The GRX- 3080 JLR diagnostic battery charger will determine the internal condition of a battery before attempting to apply a charge to it. If required, it will then charge and assess the battery until the battery condition is established and a test result is given
BATTERY SUPPORT Power Supply
4. The BATTERY SUPPORT Power Supply function needs to be used whenever the vehicle comes in to the workshop for regular maintenance or vehicle module updates. Updating modules can take up to several hours and during that period a lot of current will be depleted from the battery. To support the battery during this process use the BATTERY SUPPORT function. When working on a vehicle, it is recommended that the GRX-3080 is connected and switched to the BATTERY SUPPORT function to ensure that, when the work is completed, the battery's state of charge is maintained at a healthy level
RECOVERY CHARGING
5. The RECOVERY CHARGING mode should only be used when the battery voltage is below nine volts. The current should be set to 50 amps for a flooded battery or 40 amps for an AGM battery. The timer for the duration of the RECOVERY CHARGING cycle should be set for one hour.
Once RECOVERY CHARGING is complete, the DIAGNOSTIC CHARGING (see above) mode may be used to assess the battery
Completing a Battery Test
Battery Tester Results Table
Flooded Battery Care Point
If the vehicle is equipped with a flooded battery, ensure the replacement battery is a flooded battery of the same specification (cold cranking amperage (CCA), battery standard (EN/SAE) / amp hour rating (Ah)) as the original battery Under no circumstances should you fit a flooded battery to a vehicle that originally had an AGM battery, unless formally instructed by Jaguar/Land Rover
AGM Battery Care Point
If the vehicle is equipped with an absorbed glass mat (AGM) battery, ensure the replacement battery is a AGM battery of the same specification (cold cranking amperage (CCA), battery standard (EN/SAE) / amp hour rating (Ah)) as the original battery, unless formally instructed by Jaguar/Land Rover
DTC INDEX
For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section 100-00
Battery tray (G1774741) removal and installation
REMOVAL
NOTES:
Refer to: Battery (414-01, Removal and Installation).
Torque: 10 Nm
NOTE:
Do not disassemble further if the component is removed for access only.
INSTALLATION
To install, reverse the removal procedure.