Driver Controls and Instruments If the engine oil pressure drops below a preset level, the low oil pressure light illuminates and a warning buzzer sounds. If the oil pressure drops to a preset critical level, the engine protection light illuminates and the engine will shut down. spinning. A label on the dash explains what actions should be taken when the wheel spin indicator light illu- minates. See Fig. 3.25 . All shutdown features have an automatic over- ride. If the vehicle needs to be moved to a safe location after a shutdown, just start the engine. It will run for about 30 seconds before shutting down again.
IF REAR WHEEL SPIN OCCURS, PARTIALLY RELEASE THROTTLE PEDAL UNTIL WHEEL SPIN AMBER LIGHT EXTINGUISHES, THEN ENGAGE AXLE LOCK. Meritor WABCO ® Antilock Braking System (ABS), Air Brake Systems 09/22/98 f600311a The Meritor WABCO Antilock Braking System (ABS) may have the following warning lights: a tractor warning (TRAC ABS) light, a wheel spin (WHL SPIN) indicator light, and a DEEP SNOW/MUD indicator light. See Fig. 3.24 . Fig. 3.25, Dash Label If equipped with an electronic engine, an automatic trac- tion control (ATC) system may be installed. On these vehicles, the ATC system automatically reduces wheel spin during reduced-traction starts.
If equipped with the tractor ABS system, the tractor warning (TRAC ABS) light illuminates after the engine is started. See Fig. 3.24 . Once the vehicle moves faster than about four mph (six km/h), the warning light goes out only if all of the tractor’s ABS components are work- ing. An "ATC Function" switch (if equipped), may be used under more adverse conditions. Turning on this switch illuminates the DEEP SNOW/MUD indicator light. The ATC system now allows some wheel spin (for example, to help burn through a thin layer of ice) during reduced- traction starts. See Fig. 3.24 . The wheel spin (WHL SPIN) indicator light illuminates if one of the drive wheels spins during acceleration. See Fig.
3.24 . The light goes out when the wheel stops IMPORTANT: If any of the ABS warning lights do not work as described above, or come on while 3.29