Check Fuel Sensor Circuit
fuel
Description
Fuel level sensor reads less than 2% for 30 seconds when configured YES, and the unit only alarms.
Activation Conditions
The fuel level sensor is configured “YES” and the reading (in Unit Data) is less than 2% for 30 seconds.
Unit Behavior
Alarm Only.
Reset Conditions
Auto reset when fuel level is sensed above 4% for 30 seconds 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 For Low Fuel Level: Check fuel level in tank. Add fuel as needed. 2. Check Sensor Fuse F5 and Wiring a. Verify correct fuse and check fuse holder for damage (see Figure 2.7). Replace fuse as required. Clear alarms, restart and check for repeat alarm(s). b. Inspect wiring from at 1-3MSM-12 to FLS-A, 1-3MSM-34 to FLS-B and 1-3MSM-23 to FLS-C. Verify that there is no physical damage to harness, and no damage, moisture or corrosion in connectors. c. Perform sensor check procedure. Refer to Section 8.5.6. NOTE If new sensor is not available, the sensor may be configured OFF temporarily. Refer to Section