List of checking procedures Check main relay * Pin 46 (main relay activation) must switch to U-Batt with a delay of 0.5 to 5 seconds after “ignition” is switched off EHAB check S Accelerator max., engine at upper idle speed S Interrupt voltage supply to EHAB (EDC pin 14), engine stops (max. 10 seconds) Checking the emergency stop function (only for first-time commissioning) a) Engine idling, n = 1500–2000 rpm b) Press emergency stop switch on terminal box. Engine switches off (max. 10 seconds) c) Actuate starter motor via ignition switch і starter motor must not turn! d) Unlock emergency stop switch. Start engine.
Because the emergency stop function has been actuated there may be slight delays in starting Steps a), b) and d) must repeated for every switch in the emergency stop circuit Check start blocking system, if fitted S Switch engine off and move gearbox switch to “On” position S Actuate starter motor via ignition switch і engine must not start! Check flashcode diagnosis:
S Engine at idle speed; connect EDC pins 21 and 13 (short-circuit speed pickup) S EDC check lamp must come on (permanently illuminated); engine continues to run S Query flashcode (connect EDC pins 49 and 19 for at least 2 seconds or actuate diagnosis button for at least 2 seconds but not longer than 10 seconds) S Flashcode for “pickup defective” must be indicated (4 x brief flashes) or S Read out fault memory with MAN-Cats (defect in speed pickup momentarily present) S Disconnect pins 21 and 13 again S Delete fault memory:
switch off ignition system, actuate diagnosis button, switch on ignition system, actuate button for at least 3 seconds but not longer than 10 sec- onds 30 PIN+ PIN– Set-point value [V] Measured value [V] Remark Main relay * 47 18 U-Batt . . . . . . . . . . . . . . Ignition sys. on 0 V . . . . . . . . . . . . . . Ignition sys. off 46 18 0 V . . . . . . . . . . . . . . Ignition sys. on U-Batt . . . . . . . . . . . . . . Ignition sys. off