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This fault also happens with my 2nd fob.
I'm seeing a resistance of 11 ohms across the coil. Of the 2 wires connected to the coil, with car immobilized I'm seeing 0v on the yellow/brown wire and 11.5v on the red/green wire. This situation doesn't change when I disarm the immobiliser with the fob. 've not done anything to either fob apart from changing the batteries. It's beginning to look like a fault with the SCU? It's a Pectron unit.
regards
Jon
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Hi all
I've had a problem with the immobiliser on my TF for about 2 months. Up until then i could leave it unlocked and when i came to start it the immobiliser would be disarmed by the fob just being next to the transponder coil around the ignition switch. Now i have to manually cancel the immobiliser alarm via the fob key each time. The fob batteries have been changed twice. Paul from Technozen suggested that this coil may be at fault.
On a meter it reads very low resistance, I had expected it to be open circuit. Is it only possible to test by substitution?
If I lock and unlock the car and then go to start it there doesn't seem to be a problem.
Thanks
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