Okay so finally got another go at this this morning. ......
First up tried it on the KJ. All the pretty lights on the ELM lit up. With WJdiag it would connect to the unit and the menu came up. On hitting "Engine" it would attempt to connect (green lights flashing on ELM unit) then got the message "No answer/Error from ELM". Then tried the Torque app and they would talk to each other.
Next tried it on the WG. After several attempts I got the tablet to connect to the ELM with the WJdiag menu coming up. On hitting either Engine or Transmission it would attempt to connect (but this time no lights showing on ELM unit) and then the same "no answer/error from ELM" would show. Again Torque would connect.
To check the app was functioning correctly I deleted it and then reinstalled it this morning. No difference in outcome.
So as mentioned before I don't expect WJdiag will def' work on the KJ, that was really to check connectivity between the ELM and the tablet.
So not sure if it's the ELM or the connector on the car. Any thoughts? To test the car I need to find someone with a reader that works and try that. If it's not that then it's most likely the ELM unit.
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