Garmin GTM 21 - Testing the Traffic Receiver; LED Status Indicators

EN–4 GTM 21 Instructions
Testing the Trafc Receiver
Observe the LEDs on the GTM 21: When the
GTM 21 is connected to power, the Power LED
is on. The GTM 21 may take up to ve minutes
to acquire data.
The Status LED indicates the status of the
GTM 21:
Yellow dot-dash ashes: determining which
country you are currently in.
Yellow solid light: searching for signal.
Red solid light: momentary signal loss.
Green solid light: normal trafc data.
Check the Map: Check the map on the GPS
device for trafc incidents or a trafc icon.
Refer to the owner’s manual.
Verify Signal Strength: If you are inside a
garage where radio signals cannot be received,
drive the vehicle outside.
Verify that you are in a service area: Check
for service from the pay service or free or
premium services.
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