OM3237 02/10 Operation - Section 32 Operator Cab and Controls Page 32-21 A4. Not Used This light is reserved for future use. B5. High Wheel Motor Temperature When high wheel motor temper- ature indicator light is illumi- nated 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. B4. Manual Backup Lights This amber indicator will illumi- nate when the manually oper- ated manual backup light switch (5, Figure 32-10) is turned ON. C4.
Engine Shutdown Timer When engine shutdown timer switch (2, Figure 32-10) has been activated, indicator light will illuminate to indicate the shut- down timing sequence has started. C5. Blower Fault This blower fault warning indica- tor light will flash on and off. An alarm will sound if a malfunction occurs in the cooling air circuit for the alternator and motorized wheels. Stop the truck immedi- ately, and notify maintenance personnel if the warn- ing light is illuminated. Damage to electrical components may result without the proper ventilation of the blower. D4.
Retard Speed Control (RSC) This amber light is illuminated when the RSC switch mounted on the console is pulled out to the ON position. The light indi- cates the retarder is active. It is for feedback only and does not signal a problem. D5, E5, A6, B6, and C6. Not Used These lights are reserved for future use. D6. Service Engine (CENSE) E4. Check Engine When the key switch is turned to the RUN position before starting the engine, amber service engine indicator light will illumi- nate for about two seconds. The light will then turn off if no faults are detected in the system.
If this indicator remains on, or flashes when equipped with the Centry™ fuel control system, alert maintenance personnel as soon as possible. This amber indicator light will illumi- nate if a malfunction is detected by the engine electronic control sys- tem. If this indicator illuminates, truck operation may con- tinue, but maintenance personnel should be alerted as soon as possible. A5. Service Engine Indicator (AEM) E6. Not Used This light is reserved for future use. This amber service engine indi- cator light will illuminate when the Advanced Engine Monitor (AEM) system detects a fault. A warning buzzer will also sound.