Hello all
Replaced my ECM under the dash on the passenger side
but now when I try to pull codes it stops working due to an error

I used the same code readed prior to and i got two codes before

two codes

p0122 throttle position sensor switch 'a' circuit low input

p0177 fuel composition sensor circuit range\performance

but now while running the code reader when its checking all the diagnostics it always stops at kwp2000 and does go any further

I think I need to program the KWP2000
should I get a GUS KWP2000 Plus OBD2 ECU Flasher Chip Tuning Kit
OFF EBAY.

Does anyone have any experience with these? or know how to do it to a Jag???
Thanks

 

Chris:
You have P0122 right, which obviously points to the TPS being bad (or the wiring to it). Are you SURE about a reported P0177? None of my Jaguar specifc lists show that for a X-300 and I guarantee you they have no fule composition sensor, which is used on an E-85 engine.
Maybe P1177?

Your header says MY 94 XJ. That would mean you are in the UK if it is really an X-300, right?

 

This car is in Toronto with me :-) is it a UK car???
Im Pretty sure its the right code but I cant check right now because of my problem reading codes now. the code read has an error when I run the diagnostics and stops when it tries to read the kwp2000

so I guess is my first step trying to get that working again?
I think I need to reprogram the kwp2000
because I think when I replaced the ECM computer it stopped reading codes properly.
Me so confuse!!!?!