GS Fault Dode Guideelectro-pnuematic Shift, Eps Gs 1

08.2

Summary of teach-in and operating faults (only shown on green instrument panel display)

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

Emergency shift not in original position

EPS 02

Emergency shift active

EPS 03

No gear display possible

Perform EPS (GS) troubleshooting, and rectify fault if necessary. Check travel sensor taught-in and actual values (compare).

EPS 04

No emergency shift possible

Check power supply to emergency shift (U not) with BW04/4: 00 00 00 00 (U not not present), check fuse F29 on base module. 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 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 sensor (B62) for mechanical (stiff tappet) or electrical fault (connection corroded). 3. Mechanical defect in transmission (range change box).

Display Fault number

Meaning

Meaning

EPS 11

Gear distance from position 1 to neutral, teach-in fault

EPS 12

Gear distance from position 2 to neutral, teach-in 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 Put emergency shift in original position, check sensor unit with BW 03/2 : 11 11 00 11 (Emergency shift not in original position) 11 11 01 11 (Emergency shift in original position) Perform EPS (GS) troubleshooting, rectify fault and switch off emergency shift.

Cause/remedy The distance (in counts) between the gear 1/3 shifting shaft position (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 distance (in counts) between the 2/4/R gear (2/3/R in the G260) and 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 reverse 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 distance teach-in fault

The distance (in counts) between the range slow and 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 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 sensor (B63) for mechanical (stiff tappet) or electrical fault (connection corroded). 3. Mechanical defect in transmission (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) system 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 on 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 Transmission ...Page 1 of 2

EPS 22

Neutral selection aborted teach-in fault

Display Fault number

Meaning

EPS 23

Transmission type invalid teach-in fault

EPS 24

Parking brake not operated teach-in fault

The neutral position knob must be permanently activated during the teach-in procedure. Cause/remedy 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. The parking brake must be on during the teach-in procedure. If the fault occurs with the parking brake on, perform FMR (FR) troubleshooting and rectify fault if necessary.

EPS 25

Emergency shift operated teach-in fault

The emergency shift may not be operated during the teach-in procedure.

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

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.

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

Countershaft shaft speed teach-in fault

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). Perform FMR (FR) 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 Transmission ...Page 2 of 2