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Home >> Jaguar >> 2019 >> XF S >> Repair and Diagnosis >> External Pages >> Different car >> Section 145 (Charging System (Battery, Mounting And Cables) -- XE/(760)) >> Battery, Mounting And Cables >> Diagnosis And Testing >> Low Battery Diagnostics >> Inspection And Verification

Inspection And Verification

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
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.

Preparation - Only on vehicles, installed with a Secure Tracker feature 

NOTE:
  • The 'Service Mode' feature is not available on North American Specification (NAS) market vehicles. 
  • Before disconnecting power to the Telematic Control Unit Module (TCU) the vehicle owner must place the TCU  into 'Service Mode'. The 'Service Mode' disables all alert triggers, except movement alert.
  • This must be done for example when disconnecting the startup battery to do maintenance repairs.
  • For security purposes 'Service Mode' is the sole responsibility of the vehicle owner as it requires a Personal Identification Number (PIN) code that has been defined by the owner.

The TCU  'Service Mode' can be activated in the following ways:

NOTE:
  • If the TCU is not set into 'Service Mode', then communication to and from the TCU may be lost, which may prevent the vehicle starting.
  • Failure to do so may result in any warranty claim being rejected. 

If the disconnection procedure is not performed, the system will send a theft alert to the following:

Then the system will enter 'Theft Notification' or 'Stolen Vehicle Tracking' mode during which time the charge in the TCU  battery would be used. The emergency services may be falsely alerted that the vehicle has been stolen.

When the startup battery is disconnected for a period of time, the vehicle owner can define the time it is to be disconnected for. If the time is exceeded, the vehicle owner must re-activate the 'Service Mode'. To re-activate the 'Service Mode' the vehicle owner is required to use 'InControl© Remote' mobile phone application.

NOTE:
  • If a control module or a component is not to specification and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures information, 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

    MECHANICAL ELECTRICAL
    • Generator
    • Accessory drive belt
    • Accessory belt tensioner
    • Generator pulley
    • Battery Monitoring Sensor (BMS)
    • Battery module
    • Generator
    • Battery/battery connections
    • Starter motor
    • Harnesses and connectors
    • Fuses
    • Starter motor megafuse
    • Charge warning indicator function
    • Instrument Cluster (IC)
    • Gateway Module
    • Local Interconnect Network (LIN) connections
    • BMS  positive terminal connections
    • BMS  fusible link
    • Quiescent drain
    • Modules remaining active after vehicle power down
    • Controller Area Network (CAN) networks remaining active after vehicle power down
  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 Code(s) (DTC) 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