OM3212 08/11 Operator Cab and Controls - Section 32 Page 32-23 Lamp Test Lamp test switch (14, Figure 32-9) is a three position, two function switch. The switch is spring loaded to the middle, NEUTRAL position. If depressed on the right side and held, it is a lamp test for all of the mon- itor lamps except the check engine lamp. Panel Dimmer Switch Panel dimmer switch (18, Figure 32-9) is used to adjust the brightness of the lighting inside the monitor panel. To increase brightness, turn clock- wise. To decrease brightness, turn counter-clockwise. If the left side of the rocker switch is depressed held the lamp test for the check engine lamp will function.
Engine Oil Pressure When the check engine lamp is illuminated because of a fault in the Quantum™ system, depress and release the left side of the rocker switch. Wait, and the check engine lamp will begin flashing the fault codes. (Refer to Quantum™ Fuel System Diagnos- tics later in this section.) Engine oil pressure monitor lamp (19, Figure 32-9) will illuminate if the engine oil pressure falls below a cer- tain value for a 5 second period of time. That value is dependent on engine rpm. At the same time a fault code will be registered in the Quantum™ system.
(Refer to Quantum™ Fuel System Diagnostics later in this section.) Low Brake Pressure Low brake pressure monitor lamp (15, Figure 32-9) will illuminate if the trans- mission controller detects that the brake system hydraulic pressure is below 12 755 kPa (1850 psi), or that the wire from the switch to the control- ler is cut. Central Warning Lamp (Red Convex Lens) Central warning lamp monitor lamp (20, Figure 32-9) will illuminate if any of the monitor lamps in the LH pod (Figure 32-9) are activated. This lamp is also activated if a fault is registered on the MOM display.
This lamp flashes, and at the same time an alarm buzzer sounds intermittently, if an abnormality has occurred in any one of the following systems: Lateral Slope Warning Lateral slope warning monitor lamp (16, Figure 32-9) is a tip-over warning device. The light will illuminate if the dump body is off of the frame and the lateral slope of the truck is beyond a pre-set safety limit.
coolant temperature monitor; torque converter oil temperature monitor; retarder oil temperature monitor; engine oil pressure monitor; high engine oil temperature; high engine blow-by pressure; high transmission lube oil pressure; battery charging monitor; parking brake monitor; body float monitor; automatic transmission monitor (mechatronics); other mechatronics monitor; or fuel level monitor. Crankcase Pressure Crankcase pressure monitor lamp (17, Figure 32-9) will illuminate if the engine crankcase pressure is greater than 14.5 in. of H 2 O for more than 5 sec- onds. At the same time a fault code will be registered in the Quantum™ sys- tem.
(Refer to Quantum™ Fuel System Diagnostics later in this section.) This lamp will also flash and the alarm buzzer will sound, if the parking brake is applied and the range selector lever is not in NEUTRAL. NOTE: The warning lamp and buzzer will not actuate when MOM detects a problem and displays the action code "01".