08.2
Summar Summary y of teach teach-in -in and and operati operating ng fault faults s (only (only shown shown on green green instr instrume ument nt panel panel displa display y)
Note The following fault numbers are only displayed by the EPS (GS) system for a short time in the green matrix, without a system abbreviation, when system or operating faults occur. They are not stored. Display Fault number EPS 01 01
Emergency sh shift not in in or original po position
Put em emergency sh shift in in or original position, c ch heck se senso r unit wi with 11 1100 11 00 11 11 (Emergency shift not in original position) 11 1101 11 01 11 11 (Emergency shift in original position)
E P S 02
Emergency shift active
Perform EPS (GS) troubleshooting, re ctify fault and switch off emergency shift.
E P S 03
No gear display poss ible
Perform EPS (GS) troubleshooting, and rectify fault if neces sary. Check travel sensor taught-in and actual values (compare).
EPS 04
No emergency shift possible
Check power supply to emergency shift (U not ) with BW 04/4: 00 00 00 00 00 00 (U not not present), check fuse F29 on base module. 01 00 01 00 00 00 (U not present)
EPS 10
Split distance teach-in fault
The distance between the slow split and fast split travel (in counts) is too small. Compare EPS (GS) MW16 and MW17 measurements with MW11 (operate split switch). 1. Check that electrical electrical connectors on split dual solenoid valve (Y29 and Y30) are properly connected (MS1 and MS2 may be the wrong way round). 2. Check split travel travel sensor (B62) (B62) for mechanical mechanical (stiff (stiff tappet) or electrical electrical fault fault (connection corroded). 3. Mechanical Mechanical defect in transmission (range (range change box).
Display Fault number
Meaning
Meaning
EPS 11
Gear dist distance ance from from posit position ion 1 to neut neutral, ral, teach-i teach-in n fault fault
EPS 12
Gear distanc distance e from from positi position on 2 to neut neutral, ral, teach-i teach-in n fault fault
EPS 13
Distance from original gate position to reverse teach-in fault
EPS 16
Distance from original gate position to gate 2/4 and 2/3 teach-in fault
Display Fault number
Meaning
Cause/remedy BW 03/2 :
Cause/remedy The distan distance ce (in (in counts) counts) betwee between n the gear gear 1/3 shif shifting ting shaft shaft positio position n (1/4 (1/4 in the G260) and the neutral position is too great. Compare EPS (GS) measurements MW18 and MW19 to MW12 (operate shift stick). 1. After repair work, check the electrical connections on the vent gear dual (Y37 and Y38) and ventilate gear (Y35 and Y36) dual solenoid valves for correct connection. 2. Check gear travel sensor (B60) for mechanical (stiff tappet) or electrical fault (connection corroded). 3. Mechanical defect in transmission. The distan distance ce (in (in counts) counts) betwee between n the 2/4/R 2/4/R gear gear (2/3/R (2/3/R in in the G260) G260) and the the neutral position travel values is too small. Compare EPS (GS) measurements MW20 and MW19 to MW11 (operate shift stick). See fault no. 11 remedy 1. to 3. The distance (in counts) between the spring-arrested gate shift shaft travel position 1/3 (1/4 in the G260) and rev erse is too small. Compare EPS (GS) measurements MW21 and MW22 to MW13 (operate shift stick). 1. Check that electrical connectors on gate dual solenoid valve (Y33 and Y34) are properly connected (MG1 and MG2 may be the wrong way round). 2. Check gate travel sensor (B61) for mechanical (stiff tappet) or electrical fault (connection corroded). 3. Mechanical defect in transmission (spring arresting). The distance (in counts) between the spring-arrested gate shift shaft travel position 1/3 (1/4 in the G260) and gate 2/4 (2/3 in the G260) is too small. Compare EPS (GS) measurements MW23 and MW22 to MW13 (operate shift stick). See fault no. 13 for remedy 1. to 3.
Cause/remedy
EPS 17
Range di distance teac h-in fa fault
The distance (in co counts) between the range slow an and ra range fast travel values is too small. Compare EPS (GS) measurements MW25 and MW26 to MW14 (perform test drive and operate shift stick / range fast not selected when vehicle stationary). 1. Check that electrical electrical connectors connectors on gate dual solenoid valve (Y31 and Y32) are properly connected (MR1 and MR2 may be the wrong way round). 2. Check gate travel travel sensor (B63) for for mechanical (stiff (stiff tappet) tappet) or electrical electrical fault fault (connection corroded). 3. Mechanical Mechanical defect in transmission (output (output box).
EPS 18
Solenoid valve or travel sensor fault during teach-in procedure
EPS 19
Vehicle moving teach-in fault
EPS 20
Undervoltage teach-in fault
EPS 21
Clutch operation teach-in fault
Perform EPS (GS) troubleshooting and rectify faults if necessary. If there is an EPS (GS) sy stem in the ACTROS, no fault codes are deleted by the teach-in procedure. Some solenoid valve codes are only up to date when activated (shifting procedure). During the teach-in procedure, v pulses have been detected by the EPS (GS) control module. 1. Operate parking brake. 2. If the fault occurs when the vehicle is stationary, check rpm sensor for erroneous pulses. 1. If the low voltage symbol appears o n the instrument cluster, charge or replace battery. 2. If no low voltage is indicated on the instrument cluster, check EPS (GS) control module power supply at X1.9/7 and 9/8 (only possible using HHT, actual value 54 or measuring device). During the teach-in procedure, the clutch pedal was operated or released too soon or too late (pay attention to buzzer).
© Daimler AG, 2/3/13, G/01/13, dh0802wlw0001x, 08.2 - Electro-pnuematic shift, EPS (GS) 1 - Summary of teach-in and operating faults ACTROS, Models 950-954 with Transmissi
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EPS 22
Ne utral se lect io n abo rte d tea ch-in fa ult
Display Fault number
Meaning
T he ne utra l p ositio n k nob must be pe rmane ntly act iv ate d d uring th e te ach -in procedure. Cause/remedy
EPS 23
Transmission type invalid teach-in fault
During the small teach-in procedure, a transmission type has to be already stored in the EPS (GS) control module. Perform large teach-in procedure or set correct transmission type parameter. T he pa rkin g b rak e m ust be on du rin g th e tea ch-in proc edu re . If the fault occurs with the parking brake on, perform FMR (FR) troubleshooting and rectify fault if necessary.
EPS 24
Par king brake no t o pe rated tea ch-in fault
EPS 25
Eme rg en cy sh ift ope rat ed tea ch- in fault
T he emerg en cy sh ift ma y no t b e o per ated during th e te ach -in proc edu re.
EPS 26
Engine running teach-in fault
EPS 27
Engine torque invalid/missing teach-in fault
During the small teach-in procedure, the engine may not be started. During the large teach-in procedure, start engine when neutral indicator blinks. Perform FMR (FR) and PLD (MR) troubleshooting and rectify fault if necessary.
EPS 28
Engine not started teach-in fault
EPS 29
Engine revs missing teach-in fault
EPS 30
No gas teach-in fault
1. Gas pedal operated during teach-in procedure. 2. Perform FMR (FR) troubleshooting, teach-in gas pedal again if necessary.
EPS 31
Clutch distance teach-in fault
EPS 32
Co unt ers haft s haft s pe ed tea ch-in f ault
1. The clutch was not correctly operated during the teach-in procedure (clutch pedal not fully depressed). 2. Check clutch (B2) travel sensor for mechanical (stiff tappet) or electrical fault (connection corroded). P erfor m FMR (F R) tro ub lesh oo ting an d rec tif y fa ult if ne cess ary .
If the neutral indicator blinks, the engine must be started after no more than 10 sec. during the large teach-in procedure. Perform FMR (FR) and PLD (MR) troubleshooting and rectify fault if necessary.
© Daimler AG, 2/3/13, G/01/13, dh0802wlw0001x, 08.2 - Electro-pnuematic shift, EPS (GS) 1 - Summary of teach-in and operating faults ACTROS, Models 950-954 with Transmissi
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