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Master Tech Steve White at Autologic HQ supports a technician facing a Central Junction Box fault. He shares the steps needed to reduce CJB programming failures and lengthy recovery procedures.

Case Study for Jaguar XF 2013-2015

A customer reported a concern of multiple warning lights illuminated on the Instrument Cluster. On inspection, it was found there was water ingress into the Central Junction Box (CJB), caused by a defect in the washer pump in the washer bottle. The water was tracing back in the loom, contaminating the CJB and rotting the plug pins.

The fix for this issue is to replace the CJB, fit a harness repair kit and a water blocking splice. Once fitted, the CJB will also require programming. We have found that the programming procedure is unstable and has a high failure rate, which can cause the car to become immobilised unless you follow this procedure:

  • Firstly, copy all car configuration from the CJB Front Smart Junction Box (FSJB) to the Rear Smart Junction Box (RSJB), making sure they match.
  • You must then program the Keyless Vehicle Module (KVM) as an existing module to ensure it is on the latest software. At this point, if it will not update, you will need to replace the KVM and program it as new.
  • You can now fit the new CJB (FSJB). You will need to make sure the battery voltage is correct for programming.
  • You must have the recommended 125amp charger on the vehicle to supply and maintain the correct level in the battery and the vehicle’s modules. Failure to heed this warning will result in failure of the CJB programming and the car being immobilised.
  • Once the battery support is on the car, you can program the CJB and carry out the post programming routines, including copying the car configuration from the RSJB, learning the chassis number, learning the target identifier (security) and verifying the keys.
  • You may need to run the immobilisation reset function at the very end to re-align the modules.

autologic_prodAutologic now part of the Opus Group

Autologic was acquired by the Opus Group in 2017 and has been provided with the platform to enhance its offering, becoming part of a new ‘Intelligent Vehicle Support’ division. This unites Drew Technologies with Opus’ recent acquisitions of Autologic and Farsight, focusing on technology to assist workshops in the programming, diagnosis and repair of advanced vehicles.

Autologic provides independent garages with the diagnostics equipment and expert guidance from manufacturer-trained technicians to tackle increasingly sophisticated workshop tasks. Two core products are offered – Autologic AssistPlus Advanced and AssistPlus Pro, both feature AutologicLive, providing instant access to OE trained master techs online, over the phone or via the device. They provide step-by-step guidance and fault code information for even the most obscure or complex repairs.

Potential saving of thousands each year

Autologic says AutologicLive is like having a dealer-trained technician in your repair shop right when you need them and not on your payroll. It estimates the support can potentially save users an hour a day, saving over £15,000 every year (calculated on typical labour rates at £60 per hour).

The ‘Advanced’ device aids in-depth fault identification across 16 vehicle brands, including BMW, Jaguar/Land Rover, VW Audi, Citroen, Ford and Mercedes-Benz. The ‘Pro’ device is designed for BMW, MINI and Land Rover Jaguar specialists, enabling module replacement, programming and configuration.

01865 870 050

https://uk.autologic.com/products/

 

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