Automotive Diagnostic System NT809BT User's Manual V1.0
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6.7 Continuous Variable Transmission (CVT)
This function is used to reset the compensation code and initialize the ECT
after a solenoid valve or valve body assembly has been replaced.
6.8 Gear Learning
The crankshaft position sensor learns crankshaft tooth machining tolerance
and save to the computer to more accurately diagnose engine misfires. If
tooth learning is not performed for a car equipped with Delphi engine, the MIL
turns on after the engine is started. The diagnostic device detects the DTC P
1336 'tooth not learned'. In this case, you must the diagnostic device to
perform tooth learning for the car. After tooth learning is successful, the MIL
turns off.
After the engine ECU, crankshaft position sensor, or crankshaft flywheel is
replaced, or the DTC 'tooth not learned' is present, tooth learning must be
performed.
6.9 TPMS Relearn
After the tire pressure MIL turns on and maintenance is performed, the tire
pressure resetting function must be performed to reset tire pressure and turn
off the tire pressure MIL.
6.10 Injector Coding
Write injector actual code or rewrite code in the ECU to the injector code of the
corresponding cylinder so as to more accurately control or correct cylinder
injection quantity. After the ECU or injector is replaced, injector code of each
cylinder must be confirmed or re-coded so that the cylinder can better identify
injectors to accurately control fuel injection.
6.11 ABS Bleeding
Anytime the brake system is opened to replace components such as calipers,
wheel cylinders, the master cylinder, or brake lines or hoses, air gets inside.
The air has to be removed by bleeding the brakes if you want a firm brake
pedal. Air trapped in the lines, calipers or wheel cylinders will make the pedal
feel soft and spongy. Air is compressible, so when the brakes are applied any
air bubbles in the system must first be compressed before the hydraulic fluid
will transmit pressure to apply the brakes.
