OM3023 10/00 Operation - Section 3 Operating Instructions Page 3-37 30. Coolant Level Monitor The Coolant Level Monitor (30, Figure 3-8) indicates a low radia- tor coolant level. If this monitor lamp flashes and alarm buzzer sounds, stop truck, shutdown engine, and add coolant as required. Action code "01" will be indicated. 35. Front Brake ON/OFF Switch This switch (35) is used to change the braking method according to the road conditions. 31. Engine Oil Pressure Monitor This position (out/light "Off") is used when traveling on normal road sur- faces. Braking force is applied to both front and rear wheels. The Engine Oil Pressure Monitor (31) indicates low engine oil pressure.
If the lamp flashes and alarm buzzer sounds, stop the engine and carry out inspection. Action code "04" will be indicated. This position (in/light "On") is used when traveling on slippery roads. Brak- ing force is applied only to the rear wheels . This switch is present in all instrument panels, but is inactive in trucks without this option. 32. Charge Monitor The Charge Monitor (32) indi- cates an abnormality in the charging system while the engine is running. 36. Panel Dimmer Switch The Panel Dimmer Switch (36) is used to adjust the brightness of the lighting inside the monitor panel and pilot lamps. If the monitor lamp lights up, check the charging circuit.
Action code "01" will be indicated. Adjust as follows: 33. Transmission Oil Filter Monitor To INCREASE brightness, turn CLOCKWISE. The Transmission Oil Filter Moni- tor (33) warns of clogging of the transmission oil filter. If the moni- tor light lights up, replace the transmission filters, and check for contamination in the oil. Action code "01" will be indi- cated. To DECREASE brightness, turn COUNTERCLOCKWISE. 34. Hazard Warning Lights The Hazard Warn- ing Light switch (34, Figures 3-6, and 3-7) causes all turn signal lights to flash. The toggle switch is an "ON-OFF" type.