Operation - Section 32 OM3223 Page 32-20 Operator Cab and Controls C3. Body Up This amber body up indicator, when illuminated, shows that the body is not completely down on the frame. The truck is not to be driven until body is down and light is off. A4. Not Used Reserved for future use or options. D3. Dynamic Retarding B4. Manual Backup Lights This amber dynamic retarding indicator light illuminates when the retarder pedal is operated, RSC (Retarder Speed Control) is activated, or the automatic over- speed retarding circuit is ener- gized, indicating the dynamic retarding function of the truck is operating.
This amber indicator will illumi- nate when the manually oper- ated manual backup switch (3, Figure 32-6, Instrument Panel) is turned ON. C4. Engine Shutdown Timer - 5 Minute Idle When the engine shutdown timer switch has been activated (2, Figure 32-11), this indicator light will illuminate to indicate that the shut down timing sequence has started. Refer to Instrument Panel for operation of this switch. E3. Stop Engine This red engine monitor warning light will illuminate if a serious engine malfunction is detected in the electronic engine control system. Electric propulsion to the wheel motors will be discon- tinued and the maximum engine speed will be reduced to 1250 rpm.
Dynamic retarding will still be available if needed to slow or stop the truck. D4. Retard Speed Control Indicator This amber light is illuminated when the RSC switch mounted on the console is pulled out to the ON position. Stop the truck as quickly as possible in a safe area and apply parking brake. E4. Check Engine Monitor This indicator light is illuminated when there is a need to have maintenance personnel inspect the engine. Shut down the engine immediately. Additional engine damage is likely to occur if operation is continued. A5. Service Engine This amber indicator light will illuminate when the Advanced Engine Monitor (AEM) system detects a fault. A warning buzzer will also sound.
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