instead of just replacing the suspect relay with a new one only to throw away the last one, you can now prove to yourself that the relay is good or bad. This loop checks it 10 times. I've had relays that failed when they just got hot (near the motor etc etc) so you can't prove that with this unit (unless you test the relay if it's from any source is hot). However, it helps with general troubleshooting if you can only test it.
Autel AP200H OBD2 Scanner Dongle - Wireless Bluetooth Code Reader with Health Status Reports - Diagnostic Tool for Engine, Transmission, ABS, SRS - OLS/BMS Resets - All Vehicles (Android/iOS)
11 Review
MUCAR CDL20 OBD2 Scanner - Check Engine Code Reader And Diagnostic Scan Tool For All OBD II Protocol Cars Since 1996, With O2 Sensor, EVAP System, And Smog Test Functions
23 Review
Autoscanner for car diagnostics Rokodil ScanX Pro, OBD2 scanner
29 Review
Upgrade Your Car Diagnostics With 16 Pin OBD2 Extension Cable Splitter - Male To Dual Female Y Cable - 50CM
17 Review
Xiaomi Mi x Mijia Wiha Precision Screwdriver Set (DZN4000CN), 25 pcs
34 Review
Rechargeable screwdriver OA-3,6F (433.0.2.00), 3.6 V, 1.3 Ah Li-ion, blister
46 Review
Xiaomi Mijia Ratchet Screwdriver 16 in 1 Screwdriver with Interchangeable Bits, 10 pcs, Black
22 Review
DVR 70MAI Dash Cam Pro Plus+, black (A500S), black
87 Review