Specification Sheet

LAUNCH X431 V+ Reset Service Functions:

Besides ECU coding, ALL systems’ diagnoses and bi-directional test, X-431 V+ also features

various and helpful service functions. The most commonly performed service functions contain:

1. Oil Reset Service

This function can be performed in the following cases:

i. 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.

ii. After changing engine oil or electric appliances that monitor oil life, you need to reset the

service lamp.

2. Steering Angle Calibration

This function can be performed in the following cases:

i. 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.

ii. 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.

3. Electronic Parking Brake Reset

i. If the brake pad wears the brake pad sense line, the brake pad sense linesends 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.

ii. Reset must be performed in the following cases:

1) The brake pad and brake pad wear sensor are replaced.

2) The brake pad indicator lamp is on.

3) The brake pad sensor circuit is short, which is recovered. The servo motor is replaced.

4. ABS Bleeding

This function allows you to perform various bi-directional tests to check the operating conditions

of Anti- lock Braking System (ABS).

i. When the ABS contains air, the ABS bleeding function must be performed to bleed the

brake system to restore ABS brake sensitivity.

ii. 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.

5. Electronic Throttle Position Reset / Learn

This function enables you to initialize the throttle actuators so that the “learned” values stored on

ECU are returned to the default state. Doing so can accurately regulate throttle (or idle engine)

operations to control the amount of air intake. Throttle matching must be performed in the

following cases:

i. The ECU is replaced and the ECU does not yet store throttle working features.

ii. The ECU is disconnected from power and the ECU memory is lost.

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LAUNCH X431 V+ Reset Service Functions: Besides ECU coding, ALL systems’ diagnoses and bi-directional test, X-431 V+ also features various and helpful service functions. The most commonly performed service functions contain: 1. Oil Reset Service This function can be performed in the following cases: i. If the service lamp is on, you must provide service for the car.
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iii. The throttle assembly is replaced. iv. The intake pipe is replaced or removed, which affects idle speed control by ECU and throttle body. v. The throttle is cleaned. Although the idle throttle potentiometer features remain unchanged, with the same throttle opening, the air inflow has changed and idle speed control features have changed. 6.
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11. Camshaft Gear Learning Help user to finish tooth learning after changing crankshaft in car engine, so the new part can be used.