User guide
Where each function is, in the order of a job. It sits beside a scan tool. It does not code the car, clear adaptations, or open security access.
1
Connect
Tap Connect in the header. On Android, in Chrome, pick the adapter. A Veepeak BLE+ or a similar BLE ELM327 is what it expects. If the name looks wrong, use Show all devices. Demo mode is the other choice, for learning the screens before you are at the car. An iPhone cannot open the adapter.
2
The job
This is the screen you start on. Put the registration on the sheet and leave it on “pre diagnostics”. Read the codes onto that visit. Run the fuel trims and the volumetric efficiency pull, and attach them. Switch to “post diagnostics” and do them again. Charging can go on the same sheet. Print it. New job clears that sheet on this phone.
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Codes
Read stored, pending and permanent codes before they are cleared. Clear sends Mode 04, and only after the repair. The job pack can read them straight onto the visit you have selected.
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Fuel trims
In the bay, engine warm. Take a steady idle, then hold about 2,500 rpm. Plus means the ECU is adding fuel. Minus means it is taking fuel away. Inside ±10% is called normal. That is a guide, not a code. Put the result on the job.
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Battery and charging
Use this on a no-start, or when the battery is in doubt. Ignition on, engine off, then crank, then let it idle. It records module voltage, including the lowest figure it sees while cranking. A short dip can be missed. A low figure is worth a meter.
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Volumetric efficiency
The road pull. Enter the vehicle and the engine size in litres. Accept the road warning. Arm the test, then one pull in 2nd or 3rd from low revs to high revs. Do not change gear. Lift, and the report stays on the phone even if you walk out of Bluetooth range. Attach it to the job. A low number can point at a restriction, a leak after the airflow meter, cam timing, or a meter reading short. On a turbo the figure is against boost. If the ECU has no MAF, the test uses a wideband lambda and a fuel rate when both are on the generic port.
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Live data
The gauges for the list you have selected. Up to four PIDs can sit on one graph, each on its own scale. If Record is off, that graph is only the last few seconds.
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Record and the log
Record is in the header. Stop it and the run is saved on this phone. Open the log to export CSV or JSON. The registration, make and model are written on the file when you have filled them in.
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Compare two runs
On the log list, mark one run A and another B. Compare appears only after both are marked. Both traces start at zero on the same scale. Use it for before and after, or to put this vehicle against another.
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BHP
The same sort of pull, when the job needs a power figure. Calculated from the data the vehicle provides, using the ECU’s torque when that is reported. An estimate, not a hub dyno.
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VE and BHP
One pull that records both, when you want both on the same graph. The separate VE and BHP tools stay there when you only want one.
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Relative compression
Cranking only, and it needs a long crank. A low slot is worth a gauge test. An even result is encouraging, but it does not prove the compressions are good, because the RPM the ECU shows is pre-filtered.
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DPF pressure
For a diesel, parked and warm. Idle, then 2,500 rpm with no load. You get the pressure drop, the temperature, a graph, and a restriction index. It is not the soot percentage from a dealer tool. Generic OBD does not carry that.
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PID lists
Choose a short list for live data. The tests set their own channels when you arm them, then put your list back.
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Freeze frame
The conditions the ECU stored when the fault set. Open it from More, or from the links on the Codes screen.
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Mode 06
Catalyst, oxygen sensor and EVAP results, pass or fail against the limits stored in that ECU. Also linked from Codes.
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Min and max
At the bottom of Tools. Arm it and it keeps the highest and lowest value on the channels in the current list. Useful for a short road test when you do not need a full log.
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