OM3226 Operation - Section 32 Operator Cab and Controls Page 32-19 Body Up Indicator Amber body up indicator light (C3), when illuminated, indicates the body is not completely at rest on the frame. DO NOT not drive the truck until the body is down and the light is off. Backup Indicator Amber backup indicator light (B4) will illuminate when backup light switch (5, Figure 32-11) is turned on. Engine Shutdown Timer Switch- Five Minute Idle Dynamic Retarding Indicator Amber dynamic retarding indica- tor light (D3) illuminates when the retarder pedal is pressed, the RSC (Retarder Speed Control) is activated, or the automatic over- speed retarding circuit is ener- gized.
When engine shutdown timer switch (2, Figure 32-11) has been activated, indicator light (C4) will illuminate to indicate the shut- down timing sequence has started. Stop Engine Warning Retard Speed Control Red stop engine warning light (E3) 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. Amber retard speed control light (D4) is illuminated when the RSC switch is pulled out to the ON position.
Service Engine Indicator (AEM) Amber service engine indicator light (A5) will illuminate when the Advanced Engine Monitor (AEM) system detects a fault. A warning buzzer will also sound. Stop the truck as quickly as possible in a safe area and apply the parking brake. Shut the engine off immediately. Additional engine damage is likely to occur if the engine continues to operate. High Wheel Motor Temperature Indicator When high wheel motor temper- ature indicator light (B5) is illu- minated and the alarm sounds, high wheel motor temperature is indicated. Stop the truck, place the selector switch in NEUTRAL, and raise the engine rpm to high idle for several minutes to cool the wheel motors.
If the indicator does not turn off, notify maintenance personnel.