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X-431 IMMO PAD User Manual
interval depending on the vehicle driving conditions and climate.
This function can be performed in the following cases:
1. If the service lamp is on, you must provide service for the car. After service, you need to reset the driving mileage or
driving time so that the service lamp turns off and the system enables the new service cycle.
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.
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