Faults 7.2 Engine management When the fault is corrected the light goes out. For some faults it is neces- sary to switch off the ignition, wait for 30 s and then switch the ignition back on. existing faults can be read out in the form of a blink code, only when the engine is not run- ning, in the following manner: After pressing the diagnosis button for at least one second, the fault light goes out and the first fault is out- put as a blink code after releasing the button. Analyse the blink code as per the table on the following page. After outputting the fault blink code, the fault lamp goes out for five seconds. Then the next fault (i.e.
the following one in the fault memory) can be displayed by pressing the diagnosis button. If the last existing fault has been shown, by actuating the diagnosis button once more the first fault will be shown again. Table of fault blink codes Diagnosis button The possible blink codes, their meaning and measures for correcting faults can be found in the table on the following page. The blink code values in the first column indicate the number of preliminary short blink signals (illuminated duration approx. 0.4 s), the number of subse- quent long blink signals (illuminated duration approx. 0.8 s) as well as the number of conclu- ding short blink signals.
The code 2-1-4 for the fault “overspeed” is made up of two short, one long and four short blink signals, for example. If a fault cannot be corrected by the measures given in the table please contact your service representative responsible. Engine protection function of the electronic engine control EMR3 Depending on the design of the monitoring functions, the EMR3 can protect the engine from damage in certain fault situations by mo- nitoring compliance with important limit values during operation and checking the correct function of the system components.
Depen- ding on how serious a detected fault is, the en- gine may continue to operate with restrictions, whereby the fault lamp indicates a serious sys- tem fault by blinking. In this case, the engine must be switched off as soon as it is safe to do so. Depending on the engine configuration, the blinking fault lamp may have the following me- aning. z Request to the operator to shut down z Caution Failure to do so will void the warran- ty!Automatic shutdown of the engine after a short warning time, possibly connected with a start prevention To cool down the engine, forced engine operation at low ildling speed, possibly with automatic shutdown.Start pre- vention.
See also ( 18 ) 7 Use of the Diagnosis button With the diagnosis button the fault at hand can be read out as a blink code. The diagnosis but- ton and the fault lamp are located in the vehicle drive stand. The occurrence of errors is indica- ted by flashing or steady lighting of the fault lamp. More precise information regarding all 46