FADEC interface

Thanks Jeff.

I redo all the wiring for HIC connectors to GEA 24, and the problem persists. Also I checked all X connectors, and are as per manual.

Symptoms:

Both Lanes ON:

Garmin Engine FADEC Interface Info:

• Lane A Status - Caution
• Lane B Status - Caution
• Ambient Pressure -          Sensor Fault
• Boost Pressure -          Sensor Fault
• Crankshaft Position -          Sensor Fault
• Manifold Air Pressure - Sensor Fault
• Manifold Air Temp -          Sensor Fault
• Oil Pressure - Sensor Fault
• Oil Temperature - Sensor Fault
• Overboost PCV Valve - Fault

Engine Indications:

• No RPM
• No Oil Press
• No Oil Temp

Lane A ON:

Garmin Engine FADEC Interface Info:

• Lane A Status - No Data
• Lane B Status - Caution
• Lane A/B Communication - Fault
• Ambient Pressure -          Sensor Fault
• Boost Pressure -          Sensor Fault
• Crankshaft Position -          Sensor Fault
• Manifold Air Pressure - Sensor Fault
• Manifold Air Temp -          Sensor Fault
• Oil Pressure - Sensor Fault
• Oil Temperature - Sensor Fault

Engine Indications:

• No MAN Press
• No RPM
• No Oil Press
• No Oil Temp
• No CLNT
• NO EGT

Lane B ON:

Garmin Engine FADEC Interface Info:

• Lane A Status - Caution
• Lane B Status - No Data
• Lane A/B Communication - Fault
• Crankshaft Position -          Sensor Fault
• Overboost PCV Valve - Fault

Engine Indications:

• No RPM
• No Oil Press
• No Oil Temp

Garmin Engine FADEC Interface Info always reads Engine Type, Serial Number, Hours, Throttle Position, ECU Type, ECU Serial Number and ECU Software Number.

RS-232 Port configured as Garmin Instrument Data.

No clue yet. I´m trying to get a B.U.D.S. to scan the ECU.

Ricardo,

You say the RS232 port is configured as “garmin instrument data”.  That is correct, but the RS-232 path is only a backup. The information from the GEA-24 to the GDU is primarily (normally) over the Garmin CAN.  In the event the Garmin CAN fails and the RS-232 path is used, it will only display engine data on the GDU that it’s connected too, it won’t propagate to a second EFIS. 

I know you have connected the Rotax CAN to the GEA-24 Pins 17 & 33 on the J244 connector, but have you also connected the Garmin CAN to pins 1 & 2 on the GEA-24 J241 connector? Looking at the original photo you posted the Garmin CAN does not appear to be connecting to the GEA-24.  

Jeff, yes Garmin CAN bus is connected to GEA 24. It has a status light on the back of the unit, and it’s blinking indicating good connection. It has to be something else. 
I appreciate your help and time. 

I assume you found the problem with no power on HIC A/B pin 1?