Variant 1
Applies to: EAS1
What does Scania EAS fault code 784392 mean?
CAN message regarding the maximum steering angle from the DAS control unit is invalid.
What causes Scania DTC 784392?
The signal status is one of the following: - Invalid - Reserved - Contains faults - Not available
How does the system react?
Electrically assisted steering cannot be affected by other systems via CAN.
How to fix Scania EAS fault code 784392?
- Switch off the electric power supply to the battery with the battery master switch.
- Wait 10 seconds.
- Switch on the battery master switch.
- Check the fault codes in the DAS control unit.
Variant 2: Signal, EASSteeringAngleLimitMax out of defined range
Applies to: EAS2
Detection
Signal, EASSteeringAngleLimitMax has a value between the range, [0xFB00, 0xFFFF]. The DTC will set during the following condition: 1.system state: NMWait, PreDrive, DriveDown, DriveUp, PostRun, Off, Error, Flash, LowVolt. 2.system voltage is above 16v. 3.system voltage is below 32v.
Possible cause
The received signal value is in one of the below mentioned value ranges: 0xFB00 - 0xFBFF :: Parameter Specific 0xFC00 - 0xFDFF :: Reserved 0xFE00 - 0xFEFF :: Error 0xFF00 - 0xFFFF :: SNA (Signal-Not-Available).
System reaction
De-activate External Assist Interface functionality. DTC not affected ASM functionality, ASM functionality active. Hint: The functionality Active Lane Assist (EAI) provides an interface for controlling the wheel angle via CAN..
Symptoms
Not applicable
How to fix
- Step-1: Perform a Klemme-30 reset (Power Reset).
- Step-2: If the SPN is still active, check the sending ECU(s).
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.