This technical bulletin is intended for trained, professional technicians to assist in proper vehicle service. It informs technicians of conditions that may occur on some vehicles and provides information to diagnose and repair issues.
Situation:
Customers may report concerns with power steering assist and changes in Instrument Cluster illumination color, which may be caused by a voltage differential between the Central Junction Box (CJB) grounds.
Action:
Follow the service instruction below to diagnose and repair the issue, including reading and clearing fault codes, installing a new ground lead, and renewing the Central Junction Box (CJB) if required.
Required tools and parts include a Jaguar Land Rover-approved Midtronics battery power supply, diagnostic tool, and specific part numbers.
Manual:
Download: Technical Bulletin JTBOOS1ZNAS1 F-TYPE (X152) Model Year: 2014-2015
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