JEEP patriot 2008 2.4 4*4 Fortin EVO-All +CHRT5 error p0513 in memory

Question

Good day!
JEEP Patriot 2008 2.4 connected Fortin EVO-ALL via CHRT5.
Everything works as it should, the only moment that confuses and I want to solve this problem is that it gives error p0513 in the memory of the car. This happens when, after autostart, insert the key into the ignition switch, turn it to the "on" position and press the brake pedal. It turns out that when the control is transferred to the standard immobilizer in the key, the signal is lost and gives an error, but does not light the lamp.
The key is programmed.
After updating the firmware of the unit, I reset it to factory settings. It seems that I did everything according to the instructions.
What could it be?
Sorry for my english-gogl translation.

Answer 1

Try disconnecting the MUX

Comments

Thank you for your prompt reply!
I tried to turn off pin18 (MUX), the instrument panel lights up, but the starter does not turn.
What other reasons could there be?
Perhaps it was necessary to connect the power of the Fornin unit not with a 4-pin connector, but separately pull + 12V and ground?