On-Board-Diagnosis Binary Values FR (Drive Control)

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Erica Bates
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1 BW01 Voltage supply, terminal 15 Voltage supply, FR (FMR) control unit, terminal 15 at X2. 18/3. FMR B W BW01 Starter signal, terminal 50 Voltage supply, FR (FMR) control unit, terminal 50 at X1. 18/18. BW01 D + input Voltage at D + input from FR (FMR) control unit at X4. 18/13. BW01 D + output Voltage at D+ output from FR (FMR) control unit, terminal 30 at X2. 18/4. BW02 Stop lamp input Check input signal from stop lamp switch with ABS or via vehicle CAN bus from BS (EPS) brake value sensor Start engine Allow engine to idle. Allow engine to idle Operate service brake. (starter turns) FMR B W FMR B W is displayed on vehicles without relay D+, check parameterization if necessary. FMR B W is displayed on vehicles without relay D+, check parameterization if necessary. F M R B W OC 500 RF page 1

2 BW02 Operate service brake. Actuation of stop lamp relay Check actuation from FR (FMR) control unit to stop lamp relay on base module F M R B W BW02 Parking brake pressure switch BW02 Temposet combination switch position Input signal from Temposet button. BW03 Combination switch position, cruise control S + B Check S + B input signal from cruise control switch. BW03 Combination switch position, cruise control S-B Check S-B input signal from cruise control switch. BW03 Combination switch position, cruise control OFF Apply parking brake. On vehicles with cruise control only. Press Temposet button on engine control/continuous service brake combination switch. On vehicles with cruise control only. Press engine control/continuous service brake control lever upwards (cruise control set and accelerate). On vehicles with cruise control only. Press engine control/continuous service brake control lever downwards (cruise control set and decelerate). On vehicles with cruise control only. Press engine control/continuous service brake control lever forwards (cruise control/temposet Off). F M R B W 0 2 F M R B W F M R B W F M R B W F M R B W OC 500 RF page 2

3 BW03 Combination switch position, cruise control QUIT QUIT input signal from cruise control switch Press engine control/continuous service brake control lever upwards, downwards and forwards (QUIT position must be On in each position). F M R B W BW04 Combination switch position, continuous service brake stage 0 BW04 Combination switch position, continuous service brake stage 1 BW04 Combination switch position, continuous service brake stage 2 On vehicles without retarder only. Engine control/continuous service brake control lever in position of rest. On vehicles with retarder the stage switch on the RS system (RET) MW 03 must be checked, on the FR (FMR) 00 is displayed in every position. On vehicles without retarder only. Switch engine control/continuous service brake control lever to stage 1 On vehicles with retarder the stage switch on the RS system (RET) MW 03 must be checked, on the FR (FMR) 00 is displayed in every position. On vehicles without retarder only. Switch engine control/continuous service brake control lever to stage 2 On vehicles with retarder the stage switch on the RS system (RET) MW 03 must be checked, on the FR (FMR) 00 is displayed in every position. F M R B W F M R B W F M R B W 0 4 OC 500 RF page 3

4 BW04 On vehicles with constantly-open throttle and without retarder only. Combination switch position, continuous service brake stage 3 Switch engine control/continuous service brake control lever to stage 3. On vehicles with retarder the stage switch on the RS system (RET) MW 03 must be checked, on the FR (FMR) 00 is displayed in every position. F M R B W BW05 Continuous service brake solenoid valve 1 Actuation for the continuous service brake output branch 1 (engine brake and constantly-open throttle valve). BW05 Continuous service brake solenoid valve 2 Actuation for the continuous service brake output, branch 2. Carry out road test and switch engine control/continuous service brake control lever to stage 1 When the vehicle is stationary, actuation only takes place briefly for a speed reduction above 900 rpm: - Switch engine control/continuous service brake control lever to stage 1. - Start engine with speed briefly approx rpm (actuation takes place up to < 900 rpm when accelerator pedal is Carry out road test and switch engine control/continuous service brake control lever to stage 2 When the vehicle is stationary, actuation only takes place briefly for a speed reduction above 900 rpm: - Switch engine control/continuous service brake control lever to stage 2. - Start engine with speed briefly approx rpm (actuation takes place up to < 900 rpm when accelerator pedal is released). F M R B W F M R B W OC 500 RF page 4

5 BW05 Carry out road test and switch engine control/continuous service brake control lever to stage 1 or 2. Continuous service brake shift solenoid, ground When the vehicle is stationary, actuation only takes place briefly for a speed reduction above 900 rpm: - Switch engine control/continuous service brake control lever to stage 1 or 2. - Start engine with speed briefly approx rpm (actuation takes place up to < 900 rpm when accelerator pedal is released). F M R B W BW05 Air cleaner switch BW06 Neutral position switch Start engine and allow to run at higher speed. Engage neutral position 00 = Off 10 = Not assigned 11 = Signal not present FR B W F M R B W BW06 Reverse gear switch engage reverse gear F M R B W BW06 Actuation of reverse lamp relay engage reverse gear F M R B W OC 500 RF page 5

6 BW07 00 = Off Clutch pedal switch Parameterization voltage supply for clutch pedal switch FR B W 0 7 BW09 Engine start/stop control MSS switch for the engine start/stop function BW09 Transponder code Transponder code for key and readout electronics. BW09 FR (FMR) with immobilizer Status of immobilizer in FR (FMR) control unit. BW11 Engine start Engine start request from FR (FMR) control unit via engine CAN bus to MR (PLD). BW11 Engine runs Check status of engine. With engine start/stop function only Operate MSS switch If the value 00 is displayed, programme with HHT menu "programming", "new control unit" and "immobilizer". Start engine Start engine and allow to run 00 = Off FR B W 0 9 F M R B W 0 9 F M R B W F M R B W F M R B W OC 500 RF page 6

7 BW11 Switch off engine. Engine stop Engine stop request from FR (FMR) control unit via engine CAN bus to MR (PLD). F M R B W 1 1 BW11 Starting lock Active starting lock from FR (FMR) control unit or PSM control unit is displayed. 1 Start engine with gear engaged (starter must not respond). 2 Switch function on the body for which no starting process is permissible. Start engine (starter must not respond, otherwise check PSM parameterization F M R B W BW12 External engine start Check the external start request from the MR (PLD) control unit or PSM control unit via vehicle CAN bus 1 Start engine via start button on engine. 2 Start engine via start button etc. on body (via PSM control unit F M R B W BW12 External engine stop External engine stop from the MR (PLD) control unit or PSM control unit via vehicle CAN bus. BW12 Coolant level advance warning The coolant level symbol is shown on the green display with at coolant level sensor. 1 Switch off engine via stop button on engine. 2 Switch off engine via stop button etc. on body (via PSM control unit). Function can only be checked by draining coolant or with the decade resistor. F M R B W F M R B W 1 2 BW12 Coolant level warning The coolant level symbol is shown on the red display and the buzzer sounds with 0-25 at coolant level sensor Function can only be checked by draining coolant or with the decade resistor. F M R B W OC 500 RF page 7

8 BW13 Accelerator pedal not depressed. Accelerator pedal Closed throttle position F M R B W BW13 Accelerator pedal kick-down position BW13 Constantly-open throttle valve request from MR (PLD) BW13 Engine brake request from MR (PLD) BW14 Cruise control function BW14 Temposet function Depress accelerator pedal fully (via mechanical kick-down position). Value is only On if for example the constantly-open throttle valve is requested by the MR (PLD) control unit in the event of overspeed. The function does not have to be tested. Value is only On if for example the engine brake is requested by the MR (PLD) control unit in the event of overspeed. The function does not have to be tested. Carry out road test Press engine control/continuous service brake control lever upwards or downwards (setting cruise control). Carry out road test. Press Temposet button on engine control/continuous service brake control lever (setting limit speed) F M R B W F M R B W 1 3 F M R B W F M R B W F M R B W 1 4 OC 500 RF page 8

9 BW14 Function currently not used/parameterized Cruise control/continuous service brake Carry out road test on an incline. Switch engine control/continuous service brake control lever to position 1 (or 2 to 5). Then press control lever upwards or downwards with closed throttle (on the overrun) (continuous service brake/cruise control) F M R B W BW15 Clutch engaged Clutch switch (at clutch pedal) Only on vehicles with FR (FMR) control unit , , or FR B W BW15 Clutch disengaged Clutch switch (at clutch pedal) Only on vehicles with FR (FMR) control unit , , or Clutch pedal operated FR B W OC 500 RF page 9

10 On-Board-Diagnosis Measured Values FR (Drive Control) Scope of test Operation/Requirement Specified value Possible cause/remedy MW01 Foot throttle actuator branch 1 The on/off ratio of the square-wave output voltage (branch 1) for the current foot throttle position is displayed MW02 Foot throttle actuator branch 2 The on/off ratio of the square-wave output voltage (branch 2) for the current foot throttle position is displayed 1 Accelerator pedal not actuated. 2 Accelerator pedal fully depressed (kick-down-position). 1 Accelerator pedal not actuated. 2 Accelerator pedal fully depressed (kick-down-position). On/off ratio of the output voltage 6 to 94% On/off ratio of the output voltage 6 to 95% F R MW With non-actuated accelerator pedal, 10 to 30% is permitted. Short-circuit is detected with 0 to 5% (fault code ). F R M W A deviation >26% in full load range sets fault code The engine control takes place only up to the smaller value. At full load position (mechanical stop) 40 to 90 % is permitted. With % UB-short is detected (fault code ). F R MW With non-actuated accelerator pedal 10 to 30% is permitted. With 0 to 5% short-circuit is detected (fault code ). F R MW A deviation >26% in full load range sets fault code The engine control takes place only up to the smaller value. At full load position (mechanical stop) 40 to 90 % is permitted. With % UB-short is detected (fault code ). OC 500 RF page 10

11 On-Board-Diagnosis Measured Values FR (Drive Control) Scope of test Operation/Requirement Specified value Possible cause/remedy MW03 Torque demand, foot throttle actuator The current torque demand (position) of the foot throttle actuator is displayed 1 Accelerator pedal not actuated. 2 Accelerator pedal fully depressed (kick-down-position). Current accelerator pedal position in Nm 0 to 5000 Nm F R MW 03 F R MW The max. value is dependent upon the engine installed. If with 2. no restriction in drive control (FMR) is parameterized, then with this position the max. engine torque is displayed (occurs after a time delay through an increase in rpm with vehicle standing MW04 Vehicle speed The current speed is displayed. 1 With vehicle standing. 2 During test drive (governed by EU speed limit). Current speed in km/h 0 to 150 km/h F R MW 04 F R MW MW05 Speed specified value The current speed value from the drive control (FMR) or parameterizable special module is displayed. 1 With vehicle standing the parameterized legal speed limit is displayed. 2 During test drive and active cruise control or Temposet the set speed is displayed. 3 With working speed turned on the parameterized maximum speed (drive control (FMR) or parameterizable special module) is displayed as necessary. Speed specified value in km/h 0 to 125 km/h F R MW F R MW Display (3): F R MW e.g. Display with step plate switch, waste-vehicle. OC 500 RF page 11

12 On-Board-Diagnosis Measured Values FR (Drive Control) Scope of test Operation/Requirement Specified value Possible cause/remedy MW06 Air cleaner vacuum The current air cleaner vacuum is displayed. On vehicles with air cleaner vacuum switch no air cleaner vacuum is displayed 1 Engine stopped. 2 With engine running and increasing rpm the value increases. Current air cleaner vacuum in mbar 0 to 80 mbar F R MW 06 F R MW MW07 Outside air temperature The current outside air temperature is displayed. 1 Display must correspond with the temperature indicator on display. Current outside air temperature in C - 50 to +75 C F R MW 07 F R MW MW08 Rpm terminal W The current terminal W rpm of the generator is displayed. 1 With vehicle standing. 2 At idle speed rpm compare with engine rpm terminal W. A deviation of >300 rpm longer than 5 s at over 1000 rpm sets fault code Current rpm terminal W 0 to 8000 rpm F R MW 08 F R MW With cold engine (approx. 5 C) the initial rpm is higher than the parameterized value. MW09 MR speed (PLD) The current speed from the MR (PLD) control unit is displayed via the engine CAN bus. 1 When vehicle is stationary. 2 Compare with engine speed terminal W at idle speed. If there is a deviation > 300 rpm for more than 5 seconds at over 1000 rpm, fault code is set. Current speed from MR (PLD) 0 to 8000 rpm F R MW 09 F R MW The initial speed is higher than the parameterized value when the engine is cold (approx. 5 C). OC 500 RF page 12

13 On-Board-Diagnosis Measured Values FR (Drive Control) Scope of test Operation/Requirement Specified value Possible cause/remedy MW10 Specified speed The current fixed or working speed of switched-on power take-off is displayed. 1 Engine not running. 2 The parameterized working speed or fixed speed is displayed when the power take-off or auxiliary units are switched on. Current working speed or fixed speed 0 to 8000 rpm F R MW F R MW MW11 Governor type The current governor type requested by the FR (FMR), PSM or KS (MKR) in the MR (PLD) control unit is displayed. 1 Engine not running. 2 The parameterized governor for the working speed (max. ADR) of the switched-on power take-off is displayed on vehicles with power take-offs. Current active governor type 0 to 5 and 15 F R MW 11 F R MW MW12 Idle speed The parameterized idle speed is displayed 1 With engine not running and at idle speed. 2 The parameterized limit working speed (min. ADR) of the switchedon power take-off is displayed on vehicles with power take-offs. Current idle speed 0 to 4000 rpm F R MW 12 F R M W MW13 Breakaway speed The current breakaway speed from the MR (PLD) control unit is displayed via the engine CAN bus 1 When vehicle is stationary. 2 The breakaway speed of the MR (PLD) Breakaway speed 0 to 4000 rpm F R MW The parameterized stationary speed limit (0 to 4000 rpm) is displayed when the vehicle is stationary. F R MW OC 500 RF page 13

14 On-Board-Diagnosis Measured Values FR (Drive Control) Scope of test Operation/Requirement Specified value Possible cause/remedy MW14 Specified engine torque The specified engine torque currently requested by the FR (FMR) or PSM is displayed. 1 Engine not running. 2 At idle speed. 3 Start engine and depress accelerator pedal (value increases briefly and is positive. When the throttle is closed the value increases likewise, but is negative). Specified engine torque in Nm to Nm F R MW 14 F R MW MW15 Actual engine torque The currently actual engine torque recognized by the MR (PLD) control unit is displayed via the engine CAN bus. 1 Engine not running 2 When the engine is running the value increases up to max. engine torque as the tractive resistance (load) increases. Actual engine torque to Nm F R MW 15 F R MW The value cannot be read off (changes continuously) for idle speed control. MW16 Clutch travel value 1 Clutch pedal not actuated Clutch travel value 0 to 100 % F R MW 16 The value does not return to zero immediately after operating the clutch. 2 Clutch pedal actuated F R MW OC 500 RF page 14

15 On-Board-Diagnosis Measured Values FR (Drive Control) Scope of test Operation/Requirement Specified value Possible cause/remedy MW17 Transmission input speed The transmission input speed from the FR (FMR) is displayed. 1 With engine not running (clutch engaged). 2 At idle speed (= engine speed) 3 With clutch actuation or vehicles without transmission input speed sensor Transmission input speed 0 to 8000 rpm F R MW 17 F R M Display (3): F R MW MW18 Transmission output speed The transmission output speed from the FR (FMR) is displayed. 1 Vehicle stationary. 2 Carry out road test. Transmission output speed 0 to 8000 rpm F R MW 18 F R M W MW19 Transmission ratio The programmed transmission ratio is displayed. 1 Vehicle stationary. 2 Carry out road test. Transmission ratio -250 to +250 F R MW F R MW MW20 Specified retarder brake torque The specified brake torque request from the FR (FMR) control unit is displayed. 1 Vehicle without retarder 2 Vehicle with retarder 3 At idle speed 4 The current specified brake torque is displayed on a road test with continuous brake cruise control (with retarder only). Specified retarder brake torque in Nm 0 to 5000 Nm F R MW F R MW 20 OC 500 RF page 15

16 On-Board-Diagnosis Measured Values FR (Drive Control) Scope of test Operation/Requirement Specified value Possible cause/remedy MW21 Actual retarder brake torque The actual brake torque from the retarder is displayed via the vehicle CAN bus. 1 Vehicle without retarder 2 Vehicle with retarder 3 At idle speed 4 On road test with continuous brake cruise control Actual retarder brake torque 0 to 5000 Nm F R MW F R MW MW22 Min. drive torque The lower limit value for the torque limit from the BS (EPB) or ABS with ASR control is displayed via the vehicle CAN bus. The value cannot be checked. Min. drive torque in Nm to Nm F R MW F R MW MW23 Max. drive torque The upper limit value for torque limit (refer to above text) is displayed. The value cannot be checked Max. drive torque in Nm to Nm F R MW F R MW MW24 Voltage supply, terminal 30 Voltage supply, FR (FMR) control unit, terminal 30 at X2.18/1 Voltage supply, terminal 30 (X2, 18/1) 0 to 40 V Display: F R MW OC 500 RF page 16

On-Board-Diagnosis Measured Values MR/PLD (Engine Control)

On-Board-Diagnosis Measured Values MR/PLD (Engine Control) MW01 Specified engine torque The specified engine torque requirement of the FR (FMR) or PSM is 1 Accelerator pedal not operated 2 Start engine and allow to idle 3 Operate accelerator pedal when the engine