FleetPulse Base/Base+ Troubleshooting Guide
Learn how to troubleshoot FleetPulse Base issues quickly and efficiently with this comprehensive guide.
Written by Randy French
Updated at September 22nd, 2026
Table of Contents
FleetPulse Base Telematics Gateway
Troubleshooting Guide
Backup Battery Notice
The Base device backup battery is a 7V unit designed to last approximately 7 days (fully charged) before dropping below the minimum threshold (6.3) required for reporting.
The backup battery must remain above 6V for the device to report its location once every 24 hours when the trailer is not tethered (connected to an external power supply of at least 13V).
- Approach the front of the vehicle where the FleetPulse telematics gateway is mounted. Visually inspect the gateway device, connector, and wiring for any signs of damage or wear.
-
Verify all components are properly connected and secure.
- Ensure the connector’s blue collar is in the locked position (pushed up toward the gateway).
-
Power up the gateway by connecting the tractor’s engine-on (alternator) power to the 7-way trailer nose box.
- The center pin (Auxiliary power) must read 12.7V or higher.
-
Observe the gateway’s LED lighting sequence:
- Red, Yellow, and Green LEDs should activate sequentially.
- This indicates successful power-up and data service restoration.
- Ensure the trailer is outdoors with a clear view of the sky (no overhead obstructions) for better connectivity.
-
If the light sequence does not start:
- Unlock the connector by pulling the blue collar down and unplug it.
- Test voltage across the Ground and Battery Power terminals on the gateway harness plug.
- Voltage should match the reading from the 7-way trailer nose box.
LED Guide
LED |
TEST |
DESCRIPTION |
RED |
POWER |
Device Power |
YELLOW |
GPS |
GPS Location Fix |
GREEN |
COMM |
GSM Communication Test |
BLUE |
VDM |
Vehicle Bus Detection |
# |
LED |
TEST |
LED STATUS |
DESCRIPTION |
0 |
ALL |
- |
OFF |
Device is Not Powered, Test has NOT started |
1 |
RED |
POWER |
SOLID |
Device is Powered |
SLOW FLASHING |
For MC-4+ the Battery is Charging |
|||
2 |
YELLOW |
GPS |
SLOW FLASHING |
GPS Location Fix Test Begin. |
3 |
YELLOW |
GPS |
FAST FLASHING |
GPS Location Fix Test Failed |
SOLID |
GPS Location Fix Test Passed |
|||
4 |
GREEN |
COMM |
SLOW |
GSM Communication Test Begin |
FAST FLASHING |
GSM Communication Failed |
|||
5 |
GREEN |
COMM |
FAST FLASHING |
GSM Communication Failed |
SOLID |
GSM Communication Passed |
|||
6 |
BLUE |
VDM |
SLOW FLASHING |
Vehicle Bus Test Begin |
7 |
BLUE |
VDM |
FAST |
Vehicle Bus Test Failed |
SOLID FLASHING |
Vehicle Bus Test Failed
|
|||
8 |
ALL |
- |
CURRENT |
Keep ALL LEDs in the current state before starting normal device operations. |