Install the downloaded app:
12. Swipe down on the Downloaded icon, and the Notifications
will appear. Tap the Qualcomm Izat notice, if any, make sure
that the "Allow?" checkbox is not checked (probably you r preference
for now), and Close that app, just to get rid of that notification.
Swipe down again, and tap the Leaf-Batt... Download Complete
notification to begin the app-install process.
13. Tap Install, and Done. You may run the LEAF Battery app
if you wish. However, pairing a Bluetooth ELM327-type device
with your Android device is necessary before you can see live
data with the app.
14. Pairing... with the app closed, use the Android system Settings, and
tap Bluetooth to enter the BT management, ready to turn Bluetooth On.
"Start" the car and let it get Ready to drive. Turn Bluetooth On in your
phone.
15. Then, quickly plug the ELM327 device into the car's OBD connector.
Assuming no BT devices have been discovered or paired, the phone
searches for discoverable BT devices. Otherwise, ask the phone to search.
When it finds a new (new MAC address) ELM327-type Bluetooth device,
often called OBDII, it appears on a list, as not yet paired. Quickly tap
the item on the list, enter the pairing code (most often 1234, rarely 0000,
and very rarely 6789), and attempt to pair with the ELM327 device.
If successful, the listing will show paired, but not connected. If not
successful, try to enter the pairing code again. If the second try fails,
unplug the ELM327 device dongle and start this step again.
16. Successfully paired, you can turn your phone's Bluetooth Off,
since the LEAF Battery app will turn it On when needed.
You can now run the LEAF Battery app and you should see
live data in just a few seconds.
Notes:
If you have trouble, try to get with another LEAF Battery app user,
and see their system working on their car, try their system on your
car, try your phone with their ELM327 device, and finally try your
ELM327 device again.
The most often problem is a stubborn ELM327-type clone device,
even from the same supplier. Sometimes you will get different
circuits, or different firmware in devices from the same vendor.
Clone firmware 1.5 is to be preferred, I think.
Genuine ELM327 devices have 1.4b as their latest version, I think.