Test Aa - Code 12 Electronic Controller
If a service code 12 is displayed, replace electronic controller. There is no Self-Test to perform for a service code 12.
ON-BOARD SELF-TEST CODES
| Code | Component |
|---|---|
| 11 | Electronic Controller |
| 12 | Electronic Controller |
| 21 | Main Valve |
| 22 | Left Front Inlet Valve |
| 23 | Left Front Outlet Valve |
| 24 | Right Front Inlet Valve |
| 25 | Right Front Outlet Valve |
| 26 | Rear Inlet Valve |
| 27 | Rear Outlet Valve & Ground |
| 31 | Left Front Sensor |
| 32 | Right Front Sensor |
| 33 | Flight Rear Sensor |
| 34 | Left Rear Sensor |
| 35 | Left Front Sensor |
| 36 | Right Front Sensor |
| 37 | Right Rear Sensor |
| 38 | Left Rear Sensor |
| 41 | Left Front Sensor |
| 42 | Right Front Sensor |
| 43 | Right Rear Sensor |
| 44 | Left Rear Sensor |
| 51 | Left Front Outlet Valve |
| 52 | Right Front Outlet Valve |
| 53 | Rear Outlet Valve |
| 54 | Rear Outlet Valve |
| 55 | Left Front Sensor |
| 56 | Right Front Sensor |
| 57 | Right Rear Sensor |
| 58 | Left Rear Sensor |
| 61 | Fluid Level Indicator & Pressure Warning Switch Circuit |
| 71 | Left Front Sensor |
| 72 | Right Front Sensor |
| 73 | Right Rear Sensor |
| 74 | Left Rear Sensor |
| 75 | Left Front Sensor |
| 76 | Right Front Sensor |
| 77 | Right Rear Sensor |
| 78 | Left Rear Sensor |
| 99 | Electronic Controller |