Practice isolating power, ignition-enable, ground, and voltage-drop faults at the vehicle, fuse, and hub. Measure with the system connected and active whenever possible.
Use these ranges to recognize normal operating behavior during a loaded test.
Short startup surge while the hub, cameras, storage, and network equipment initialize.
Typical continuous planning range with the installed cameras actively recording.
Ignition on, system awake, and not actively recording; router and accessories affect this reading.
Reference target after shutdown delay and vehicle modules have entered sleep mode.
Source note: Axon’s Fleet 3 requirements identify a nominal 12 V supply and a 30 mA key-off reference. The boot, recording, and idle ranges above are training/planning estimates and should be replaced with the measured values for the installed vehicle configuration.
Symptom: Ignition is on, but the hub and cameras show no power.
Measure: Check feed at fuse input, fuse output, hub power input, and ground with the circuit connected. Likely causes: Open fuse, loose fuse tap, back-pushed terminal, disconnected battery, or open ground. Fix: Repair the feed or terminal, clean and secure the approved ground, then cycle ignition.
Symptom: The hub starts unloaded but resets when the complete system is active.
Measure: Compare source voltage with hub voltage under load; test positive-side and ground-side drop separately. Likely causes: Long or undersized feed, poor splice, partially seated connector, or resistive return path. Fix: Correct the approved wire/protection and remake the faulty connection.
Symptom: The system works with the engine off but restarts during starter engagement.
Measure: Monitor hub voltage during crank and inspect battery-to-chassis and hub grounds. Likely causes: Weak battery, poor ground, shared accessory feed, or a connection opening under vibration. Fix: Resolve the vehicle starting/ground issue, then repeat the loaded test.
Symptom: The system does not follow the expected ignition-off shutdown behavior.
Measure: Confirm the ignition-enable source changes state with the key and allow the normal shutdown delay. Likely causes: Enable lead tied to constant power, wrong upfitter circuit, relay backfeed, or vehicle modules not asleep. Fix: Correct the enable source/backfeed and repeat key-on/key-off testing.
Symptom: The system works in the bay but fails during door movement or road vibration.
Measure: Perform a controlled wiggle test while monitoring status and voltage. Likely causes: Unseated terminal, tight harness, broken conductor, or intermittent ground. Fix: Reseat/replace the terminal or harness, add strain relief, and repeat the vibration test.
Symptom: The hub appears normal while one camera or peripheral disconnects.
Measure: Compare hub and device voltage while active; inspect the branch return for paint, corrosion, or loose hardware. Likely causes: Branch voltage drop, damaged harness, poor return path, moisture, or contamination. Fix: Repair the branch with approved parts and verify stable voltage during recording.
Record the exact symptom and vehicle state.
Use current Axon and vehicle documentation.
Check source, hub, and return-path voltage under operation.
Repeat the vibration, crank, or load condition.
Press Esc or click Close to return to the app.