DataLink1
| Color | State | Meaning |
| Green | Blinking | J1587/1708 data is available from the ECM. |
| Red | Blinking/Off | J1587/1708 data is not available. |
DataLink2
| Color | State | Meaning |
| Green | Blinking | J1939 data is available from the ECM. |
| Red | Blinking/Off | J1939 data is not available. |
DataLink1 (w/ Light Duty Cable)
| Color | State | Meaning |
| Green | Blinking | The LD dongle is communicating with the TCU. |
| Red | Blinking/Off | The LD dongle is not communicating with the TCU. |
DataLink2 (w/ Light Duty Cable)
| Color | State | Meaning |
| Green | Blinking | The LD dongle is communicating with the ECM. |
| Red | Blinking | The LD dongle is not communicating with the TCU. |
Cellular
| Color | State | Meaning |
| Green | Blinking | TCU is searching for a cellular connection. After several minutes of searching, Cellular LED may shut off, then begin the blinking/searching cycle again. |
| Green | Solid | TCU has established a cellular connection. |
| Red | Blinking | TCU is searching for a Wi-Fi connection (if configured to do so, V4 only). |
| Red | Solid | TCU has established a Wi-Fi connection (V4 only). |
| Orange | Blinking | TCU is searching for both a cellular and Wi-Fi connection (if configured to do so, V4 only). |
GPS
| Color | State | Meaning |
| Amber/Orange | Blinking | TCU is searching for a GPS signal using the internal antenna. |
| Amber/Orange | Solid | TCU has established a GPS signal using the internal antenna. |
| Green | Blinking | TCU is searching for a GPS signal using the external antenna connected to the coaxial port. |
| Green | Solid | TCU has established a GPS signal using the external antenna connected to the coaxial port. |
Status
| Color | State | Meaning |
| Green | Blinking 1x | TCU is active but is not registering that the vehicle engine is running. |
| Green | Blinking 2x | TCU is transmitting/receiving data from Zonar servers. |
| Green | Blinking 4x | TCU can no longer store GPS data. Typically occurs when it is in area without cellular coverage for an extended period of time. |
| Green | Solid | TCU is active and registers that the vehicle engine is running. |
| Blue | Blinking | Bluetooth is enabled and device is in pairing mode (V4 only). |
When the engine is running, allow 2-3 minutes for the LEDs to stabilize.
When the vehicle’s engine is turned off, the status LED will begin to blink for a short period of time. If all LEDs extinguish immediately after the engine is turned off, the power wire is not properly connected to battery power and must be rewired.
Cellular:
This light indicates cellular connectivity. It has two different states:
- The light is solid while the engine is running: This is normal.
- The light is blinking while the engine is running: This is abnormal. Use the following causes and steps to troubleshoot and resolve the issue:
Issue: The vehicle is located in a metallic, concrete, or underground structure.
Solution: Move the vehicle to an open outdoor area.
Issue: There is poor cellular coverage in the area.
Solution: Move the vehicle to an area with good cellular coverage.
Issue: The SIM (Cellular chip) is not activated.
Solution: Contact Zonar (877-843-3847).
Issue: The GPS Unit is outside of the United States and has not been set up to roam.
Solution: Contact Zonar (877-843-3847)
Issue: The GPS unit needs to reboot.
Solution: Disconnect the 4-pin power connector from the back of the unit and wait 30 seconds before reconnecting. For a V4 GPS unit, wait four minutes. If this does not resolve the issue, contact Zonar at 877-843-3847.
Issue: There is an internal fault with the GPS Unit.
Solution: The unit needs to be replaced. Contact Zonar at 877-843-3847.
GPS:
This light indicates GPS satellite signal. If a green LED displays, an external GPS antenna is being used. If an orange LED displays, an internal GPS antenna is being used. The GPS light has two different states:
- The light is solid while the engine is running: This is normal.
- The light is blinking while the engine is running: This is abnormal. Use the following causes and steps to troubleshoot and resolve the issue:
A) The vehicle is under a structure or heavy brush.
Solution: Move the vehicle to an area where the GPS antenna is in clear view of the sky.
B) The GPS or GPS Lead shorted.
Solution: Visually inspect the cable, looking for broken, frayed, or split wiring. If this is the case, contact Zonar (877-843-3847).
Note: Disregard LED light states when the engine is off.
Status:
This light indicates the engine status. It has seven different states:
- The light is solid while the engine is running: This is normal.
- The light is blinking while the engine is running: This is abnormal. Likely, the JBus install is not detecting engine RPMs from the ECM. Contact Zonar (877-843-3847).
- The light is solid while the engine is off: This is abnormal. Use the following causes and steps to troubleshoot and resolve the issue:
The switched power/white lead is connected to a source of power that remains powered when the engine is off.
Solution: Trace the switched/white lead back to ensure that a voltage (typically 8-30VDC) is only present when the engine is running. - Equipment or cable malfunction.
Solution: Contact Zonar (877-843-3847).
- The light is solid while the engine is off: This is abnormal. Use the following causes and steps to troubleshoot and resolve the issue:
- The light is off while the engine is off: The GPS Unit will normally go to sleep approximately four minutes after the engine has been turned off and all data has been transferred.
- The light is single-blinking while the engine is off: This indicates that all data has been uploaded from the GPS Unit to the Zonar servers. The GPS Unit will go to sleep in approximately four minutes.
Note: It is now safe to engage the Master Kill or battery disconnect switch (if equipped). - The light is double-blinking while the engine is off: This can have multiple meanings.
- The GPS Unit is actively uploading or downloading data.
- The GPS Unit has data available for upload. This typically happens when the engine was shut down in an area without cellular service.
- The light is blinking four times in a row with the engine on or off: The GPS Unit has no more storage available. This typically occurs when a vehicle is in an area with no cellular coverage (e.g. areas outside of North America). Returning the vehicle to an area with cellular coverage will resolve the issue.
DataLink1 and/or DataLink2 (JBus/MOAC Power/Data Cable Equipped Vehicles):
The DataLink1 light indicates the J1708 Data Link while the DataLink2 light indicates the J1939 Data Link. These lights have two states:
- The light is green and blinking while the engine is running: This is normal.
- The light is blinking red or is off while the engine is running: This is normal and indicates that there is no data present.
DataLink1 and/or DataLink2 (LightDuty/OBDII Power/Data Cable Equipped Vehicles):
The DataLink1 light indicates LightDuty cable-to-GPS Unit communication while the DataLink2 light indicates LightDuty cable-to-vehicle communication. These lights have two states:
- The light is blinking green while the engine is running: This is normal and indicates that there is communication between the LightDuty cable and the GPS Unit or vehicle.
- The light is blinking red or is off while the engine is running: This indicates that no communication is taking place.
DataLink1 and/or DataLink2 (4-Pin Power Cable Equipped Vehicles):
The DataLink1 light indicates LightDuty cable-to-GPS Unit communication while the DataLink2 light indicates LightDuty cable-to-vehicle communication. These lights only have one state. If the light is blinking red while the engine is running, everything is normal. Typically, the DataLink1 and DataLink2 lights will blink red in sync.