31-52
Large deviation between the duty cycle signals from the foot brake valve (F628) on pins E2 and E5 of the EBS unit
due to:
- internal fault in foot brake valve
- No noticeable system limitation in EBS
32-37
No signal from brake pedal position switch 1 in foot brake valve (F628) on pin E3 of the EBS unit due to:
- defective switch
- interruption on pin E3 of the EBS unit
- No noticeable system limitation in EBS
32-41
Brake pedal position switch 1 remains closed in foot brake valve (F628) or short circuit to earth on
pin E3 of the EBS unit
- The actuating pressure control is active when the brake pedal is not applied; after a specified time (approx. 1
min.) the actuating pressure control will automatically disengage.
33-37
No signal from brake pedal position switch 2 in foot brake valve (F628) on pin E6 of the EBS unit
due to:
- defective switch in foot brake valve
- interruption on pin E6 of the EBS unit
- No noticeable system limitation in EBS
33-41
Brake pedal position switch 2 remains closed in foot brake valve (F628) or short circuit to earth on
pin E6 of the EBS unit
- The actuating pressure control is active when the brake pedal is not applied; after a specified time (approx. 1
min.) the actuating pressure control will automatically disengage.
34-41
Lower signal level from brake pedal position sensor 1 in foot brake valve (F628) on pin E2 of the EBS unit is too
low during a specified period of time due to:
- contact resistance on pin E2 of the EBS unit
- internal fault in foot brake valve
- short circuit to earth on pin E2 of the EBS unit
- No noticeable system limitation in EBS
34-43
Upper signal level from brake pedal position sensor 1 in foot brake valve (F628) on pin E2 of the EBS unit is too
high during a specified time or the pulse width of the signal is incorrect due to:
- short circuit to supply on pin E2 of the EBS unit
- internal fault in foot brake valve
- interruption on pin E1 of the EBS unit
- interruption on connection point E2 of the EBS unit
- No noticeable system limitation in EBS
35-41
Lower signal level from brake pedal position sensor 2 in foot brake valve (F628) on pin E5 of the EBS unit is too low during a specified period of time due to:
- contact resistance on pin E5 of the EBS unit
- internal fault in foot brake valve
- short circuit to earth on pin E5 of the EBS unit
- No noticeable system limitation in EBS
35-43
Upper signal level from brake pedal position sensor 2 in foot brake valve (F628) on pin E5 of the EBS unit is too high during a specified time or the pulse width of the signal is incorrect due to:
- short circuit to supply on pin E5 of the EBS unit
- internal fault in foot brake valve
- interruption on pin E4 of the EBS unit
- interruption on pin E5 of the EBS unit
- No noticeable system limitation in EBS
41-61
Communication via V-CAN on pins A1 and A3 of the EBS unit not possible when switching on ignition due to:
- interruption on pin A1 of the EBS unit
- short circuit to earth on pin A3 of the EBS unit
- short circuit to supply on pin A1 and/or A3 of the EBS unit
- ASR brake/engine control deactivated
41-63
Interrupted communication via V-CAN on pins A1 and A3 of the EBS unit due to:
- interruption on pin A1 and/or A3 of the EBS unit
- short circuit to earth on pin A3 of the EBS unit
- short circuit to supply on pin A1 and/or A3 of the EBS unit
- ASR brake/engine control deactivated
41-65
No CAN message "ERC1" received within a specified period of time from the engine management system in relation to the engine braking torque
- No noticeable system limitation in EBS
41-66
No CAN message "EEC1" received within a specified period of time from the engine management system in relation to the engine torque and engine speed
- No noticeable system limitation in EBS
41-67
No CAN message "ETC1" received within a specified period of time from the gearbox (AS Tronic) if the drive line is activated
- No noticeable system limitation in EBS
41-68
No CAN message "CCVS" received within a specified period of time from the engine management system in relation to the parking brake status, vehicle speed and clutch status
- No noticeable system limitation in EBS
41-69
No CAN message "TCO1" received within a specified period of time from the tachograph in relation to the vehicle speed due to:
- communication problem with the tachograph (MTCO)
- K-factor in MTCO incorrect or not there
- delayed loss of supply voltage on EBS unit when switching off ignition (this is a common production situation but it has been solved in subsequent production versions by the addition of relay G426)
- No noticeable system limitation in EBS
41-71
No CAN message received from VIC within a specified period of time
- No noticeable system limitation in EBS
42-16
EBS unit does not receive correct CAN message from the rear axle modulator (D879) on pins B1 and B4 of the EBS unit
- ABS on front and rear axles deactivated
- ASR brake/engine control deactivated
- EBS pressure control on front axle, rear axle and drawn vehicle deactivated
42-61
Interrupted CAN communication with the rear axle modulator (D879) via pins B1 and B4 of the EBS unit due to:
- short circuit to earth on pin B4 of the EBS unit
- short circuit to supply on pin B1 and/or pin B4 of the EBS unit
- short circuit between pin B1 and pin B4 of the EBS unit
- ABS on front and rear axles deactivated
- ASR brake/engine control deactivated
- EBS pressure control on rear axle deactivated
43-61
CAN communication problem with the drawn vehicle ECU via pins B3 and B6 of the EBS unit
- No noticeable system limitation in EBS