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Safety
& Accessory
Initial Use
Diagnostics
FAQ & Care
Product Profile
34
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LAUNCH
PAD VII
User Manual
2. After changing engine oil or electric appliances that monitor oil life, you need to reset the service lamp.
6.2 Electronic Parking Brake Reset
1. If the brake pad wears the brake pad sense line, the brake pad sense line sends a signal sense line to
the on-board computer to replace the brake pad. After replacing the brake pad, you must reset the brake
pad. Otherwise, the car alarms.
2. Reset must be performed in the following cases:
a) The brake pad and brake pad wear sensor are replaced.
b) The brake pad indicator lamp is on.
c) The brake pad sensor circuit is short, which is recovered.
d) The servo motor is replaced.
6.3 Steering Angle Calibration
To reset the steering angle, first find the relative zero point position for the car to drive in straight line. Taking
this position as reference, the ECU can calculate the accurate angle for left and right steering.
After replacing the steering angle position sensor, replacing steering mechanical parts (such as steering
gearbox, steering column, end tie rod, steering knuckle), performing four-wheel alignment, or recovering car
body, you must reset the steering angle.
6.4 ABS Bleeding
This function allows you to perform various bi-directional tests to check the operating conditions of Anti-lock
Braking System (ABS).
1. When the ABS contains air, the ABS bleeding function must be performed to bleed the brake system to
restore ABS brake sensitivity.
2. If the ABS computer, ABS pump, brake master cylinder, brake cylinder, brake line, or brake fluid is
replaced, the ABS bleeding function must be performed to bleed the ABS.
6.5 Tire Pressure Monitor System Reset
This function allows you to quickly look up the tire sensor IDs from the vehicle’s ECU, as well as to perform
TPMS replacement and sensor test.
1. 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.
2. Tire pressure resetting must be performed after maintenance is performed in the following cases: tire
pressure is too low, tire leaks, tire pressure monitoring device is replaced or installed, tire is replaced, tire
pressure sensor is damaged, and tire is replaced for the car with tire pressure monitoring function.
6.6 gear Learning
The crankshaft position sensor learns crankshaft tooth machining tolerance and saves 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 P1336 ‘tooth not
learned’. In this case, you must use 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.
6.7 IMMO Service
An immobilizer is an anti-theft mechanism that prevents a vehicle’s engine from starting unless the correct
ignition key or other device is present. Most new vehicles have an immobilizer as standard equipment. An
important advantage of this system is that it doesn’t require the car owner to activate it since it operates
automatically. An immobilizer is considered as providing much more effective anti-theft protection than an
audible alarm alone.