Driver Controls and Instruments turns on the left-turn signal lights; pushing it clockwise turns on the right-turn signal lights. When one of the signal lights is on, an indicator light flashes on the warning and indicator light panel. When the turn is com- pleted, the signal will cancel and the lever will return to the neutral position. Air Horn, Optional To sound the air-operated horn, pull the cable located above the driver’s door. Hazard Warning Light Switch The hazard warning light switch ( Fig. 3.12 ) is located in the left switch bank on the instrument panel. Hazard warning lights are operated by pushing the top of the switch.
When the hazard warning light switch is on, all of the turn signal lights and both of the indicator lights on the control panel will flash. To cancel the warning lights, push the bottom of the switch. 1 2 Allison Automatic Transmission Controls Allison automatic transmission MD series models are controlled by an electronic control unit (ECU). The ECU processes information from sensors, pressure switches, and the shift selector ( Fig. 3.13 ) to automatically control the transmission according to programmed specifications. 1. Turn Signal Lever 2. Horn f541755 Fig.
3.11, Turn Signal Lever Electric Horn Vehicles with these transmissions have a red do-not- shift light in the lens and bezel assembly. Also, there is a service light in the indicator panel on the shift selec- tor. With the ignition switch on, both lights come on for a few seconds; then, if there is no problem with the To sound the electric horn, push the button on the turn signal lever. See Fig. 3.11 . 3.8