DTC U0423-68: Error Signal Received From Instrument Cluster: Notes
WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC U0423:68 ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE DETECTION CONDITION AND POSSIBLE CAUSE
| Description |
Error signal received from instrument cluster
- Ignition switch error signal
- Selector lever position (R position) (ATX)/Reverse (MTX) signal error
- Selector lever position (R position) (ATX)/Reverse (MTX) signal not determined
|
| Detection condition |
- Ignition switch error signal
- The AFS control module received ignition switch error signal for 5 s or more with the ignition switched ON (engine off or on).
- Selector lever position (R position) (ATX)/Reverse (MTX) signal error
- The AFS control module received selector lever position (R position) (ATX)/Reverse (MTX) signal error for 5 s or more with the ignition switched ON (engine off or on).
- Selector lever position (R position) (ATX)/Reverse (MTX) signal not determined
- The AFS control module detected undetermined selector lever position (R position) (ATX)/Reverse (MTX) signal.
|
| Fail-safe |
- Ignition switch error signal
- Control of the AFS is continued with the ignition switched ON (engine on).
- Control of the headlight auto leveling system is continued.
- Selector lever position (R position) (ATX)/Reverse (MTX) signal error
- The swivel actuator is moved to the center.
- Control of the headlight auto leveling system is continued.
- Selector lever position (R position) (ATX)/Reverse (MTX) signal not determined
- Control of the swivel actuator is continued with the transaxle range sensor (ATX)/back-up light switch (MTX) fixed in the condition when the malfunction is determined.
- Control of the headlight auto leveling system is continued.
|
| Possible cause |
- DTCs are stored in the instrument cluster.
- Instrument cluster malfunction
- AFS control module malfunction
|
| System wiring diagram |
Not applicable |