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Home >> Jaguar >> 2019 >> XF S >> Repair and Diagnosis >> External Pages >> Different car >> Section 272 (Steering Column -- XE/(760)) >> Steering Column (G1817735) >> Diagnosis And Testing >> Heated Steering Wheel (G2878709) >> Pinpoint Tests >> Pinpoint Test G: Steering Wheel Local Interconnect Network Circuit Check

Pinpoint Test G: Steering Wheel Local Interconnect Network Circuit Check

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.
  1. G1: STEERING WHEEL MODULE WIRING HARNESS INTEGRITY CHECK 
    1. Remove the driver airbag module. Refer to: DRIVER AIRBAG MODULE
    2. Check the integrity of the wiring harness (clockspring to the heated steering wheel control module).

    Is a wiring harness fault present? 

    Yes 

    REPAIR the circuit. TEST the system for normal operation.

    No 

    GO to  G2

  2. G2: STEERING WHEEL LOCAL INTERCONNECT NETWORK CIRCUIT VOLTAGE CHECK 
    1. Disconnect Clockspring electrical connector (steering wheel side).
    2. Connect Clockspring electrical connector (steering column side).
    3. Install the driver airbag module. Refer to: DRIVER AIRBAG MODULE
    4. Measure the voltage between the clockspring electrical connector (steering column side - BCM  LIN) harness side, and ground.

    Is the voltage greater than 0 volts and less than battery voltage? 

    Yes 

    Install a new heated steering wheel control module or steering wheel switch assembly (depending on model variant) as necessary. TEST the system for normal operation.

    No 

    Install a new clockspring Refer to: CLOCKSPRING TEST the system for normal operation.

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