DTC Detection Logic
WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
| DTC |
Display Item |
Malfunction detected condition |
Possible cause |
| C1684 |
4WAS MAIN ECU COMM |
4WAS communication line data communication error is detected. (An error signal is detected from 4WAS main control unit.) |
4WAS communication line/4WAS main control unit/4WAS front control unit error |
| C1685 |
4WAS MAIN ECU COMM |
4WAS communication line data communication error is detected. (An error signal is detected from 4WAS main control unit.) |
4WAS communication line/4WAS main control unit/4WAS front control unit error |