List of checking procedures 2. Test for engine when running and vehicle stationary (gearbox neutral) Engine temperature approx. 30 ° C Control unit connected Corrective measures Measure voltage between PIN+ and PIN– with multimeter Check main relay * Pin 46 must switch to U-Batt within 0.5 to 5 seconds after ignition has been switched off. 25 Set-point value Measured value Remark MAN-Cats RPM sensor (DZG) n-lower idle speed n= ................ rpm Min (low. idle sp.) Engine speed (Monitoring 2) n-top idle speed n= ................ rpm Max (top idle sp.) Auxiliary rpm sensor (HZG) n-lower idle speed n= ................ rpm Min (low.
idle sp.) Engine speed (Monitoring 2) n-top idle speed n= ................ rpm Max (top idle sp.) PIN + PIN – Set-point value [V] Measured value [V] Remark Engine speed MAN-Cats (Monitoring) Control unit supply (U-Batt) 15 47 18 19 U-Batt U-Batt . . . . . . . . . . . . . . . . . . Idle speed Reference voltage (Uref) 45 33 13 13 4.75–5.25 4.75–5.25 . . . . . . . . . . . . . . . . . . Idle speed Idle speed switch (LGS, NO contact) 39 13 4.75–5.25 0–2.00 . . . . . . . . . . . . . . . . . . Throttle lever min. Throttle lever max. idle speed Top idle sp. open closed Charge-air temperature sensor (LTF) 34 13 4.17–2.62 . . . . . . . . .
10–50°C Idle speed 10–50°C Water temperature sensor (WTF) 53 13 3.46–1.22 . . . . . . . . . 30–90°C Idle speed 30–90°C Boost pressure sensor (LDF) 36 13 0.94–1.20 1.10–1.70 . . . . . . . . . . . . . . . . . . Throttle lever min. Throttle lever max. idle speed Top idle sp. 0–100 mbar 300–600 mbar Resistor bank 35 51 13 13 0.75–1.25 > 0.6 . . . . . . . . . . . . . . . . . . Pos 0 Idle speed PIN+ PIN– Set-point value [V] Measured value [V] Remark Main relay * 47 18 U-Batt . . . . . . . . . . . . . . Ignition on 0V . . . . . . . . . . . . . . Ignition off 46 18 0V . . . . . . . . . . . . . . Ignition on U-Batt . . . . . . . . . . . . . . Ignition off