Control Module Functions
Item Display Function Action Required
Green Power Light
Illuminated System is on. None required.
Unlit
Detection system is not
functioning.
Ensure the batteries are
connected and replace any blown
fuses. If the gas detection system
is still not functioning, replace the
system immediately.
SIGNIFICANT Gas
Concentration Lights
Red (illuminated)
Dangerous gas concentration
detected.
Suspend vehicle operation
immediately and follow alarm
procedures.
Trace Gas Concentration
Lights
Amber (flashing) Minor gas concentration detected.
Suspend vehicle operation
immediately and follow alarm
procedures.
Sensor Fault Lights
Off Sensor is functioning properly. None required.
On Sensor has malfunctioned. Replace the sensor immediately.
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3 42
10
11
12
14
13
9
5
6
7
8
1. Green Light
2. Red Light
3. Sensor
4. Buzzer Alarm
5. Test Button
6. Sensor Fault Indicator Lights
7. Zone Numbers
8. Trace Leak Indicator Lights
9. Significant Leak Indicator Lights
10. Silence Engaged Light
11 Silence Button
12. Relay Reset Button
13. Relay Engaged Light
14. Power Indicator Light
Fig. 25.6, AMGaDS III Overhead Console
Natural Gas Vehicles
25.8
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