Driver Controls and Instruments compatible trailer is connected to the tractor be- fore ignition. For more information, see Chap- ter 7 . The following lights go on during the ignition sequence: Fasten Seat Belt Warning Depending on options installed, other warning and indicator lights can be present. The optional indicator lights that are available include:
alterna- tor no charge indicator, transmission temperature warning, check transmission indicator, range in- hibit indicator, air restriction indicator, engine fan on indicator, ECAS (electronic suspension) trans- fer indicator, ECAS failure warning, low washer fluid indicator, low battery voltage warning, EBS (electronic braking system) warning, wheel spin indicator, and water in fuel indicator. Low Battery Voltage Warning High Coolant Temperature Warning Low Engine Oil Pressure Warning Low Air Pressure Warning Parking Brake On Indicator All engine warning lights, including Engine Pro- tection, Check Engine, and Stop Engine (Cum- mins only) NOTE:
The functions of the ABS warning lights are explained under "Meritor WABCO ® Antilock Braking System (ABS), Air Brake Systems" later in this chapter. All ABS warning lights, including Wheel Spin, Tractor ABS, and Trailer ABS (if installed) NOTE: While the engine and ABS warning lights go on during the ignition sequence, they are not controlled by the level I ICU, but by their own sys- tem ECU (electronic control unit). Level I ICU Ignition Sequence If the headlights are turned on, the screen displays the odometer and waits for the ignition to be turned on. Once the ignition switch has been turned on, the level I ICU performs a self-test, looking for active faults.
During the first half of the self-test, all segments of the display illuminate as follows: 888888.8 . The voltmeter display also illuminates, but with the value 18.8 . During the sec- ond half of the self-test, the software revision level is displayed. When the ignition is turned on, all of the electronic gauges complete a full sweep of their dials, the warning and indicator lights light up, and the buzzer sounds for three seconds. See Fig. 3.21 . NOTE: The air gauges do not sweep. 3.22