Check Light Bar
electrical
Description
Light circuit fault: the circuit is shorted when energized or open at other times, and the unit gives alarm only.
Activation Conditions
A problem has been detected in the light circuit (LB). If this alarm is activated while the circuit is energized, the circuit is detected shorted. If this alarm is activated at any other time, the circuit is detected open.
Unit Behavior
Engine and Electric Operation: Alarm only.
Reset Conditions
Auto reset when the circuit is normal, or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
Corrective Actions
1. Check Light Bar Wiring a. Inspect light bar and connector. Verify there is no damage to light bar, and no damage, moisture, or corrosion in connector. Place the SROS in the OFF position and check. b. Verify correct fuse, see Figure 2.8. Check connectors and wiring between terminals for damage, moisture or corrosion. 2. Check Light Bar - Check operation of 2-Light Bar Refer to Section 8.10.7 for information on testing the light bar.