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Launch X-431 User Manual
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Launch X-431 User Manual

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Version: V1.00.000
Revision Date: 10-20-2020
Statement: LAUNCH owns the complete intellectual property rights for the
software used by this product. For any reverse engineering or cracking actions
against the software, LAUNCH will block the use of this product and reserve the
right to pursue their legal liabilities.
www.diagtools.eu, Pernavas 43A, Riga, Latvia, LV-1009, +37129416069, info@diagtools.eu

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Summary of Contents for Launch X-431

  • Page 1 Statement: LAUNCH owns the complete intellectual property rights for the software used by this product. For any reverse engineering or cracking actions against the software, LAUNCH will block the use of this product and reserve the right to pursue their legal liabilities.
  • Page 2 LAUNCH is not responsible for any use of this information as applied to other units. Neither LAUNCH nor its affiliates shall be liable to the purchaser of this unit or third parties for damages, losses, costs, or expenses incurred by purchaser or...
  • Page 3 LAUNCH X-431 Module S2 User Manual Important safety and operation information To avoid personal injury, property loss, or accidental damage to the product, please read all the information in this section before using the product. Handle device carefully. Do not drop, bend, puncture, insert foreign objects, or place heavy objects on the device.
  • Page 4 LAUNCH X-431 Module S2 User Manual  Ground yourself when you disassemble the programmable ROM. Otherwise, ECU circuits can be damaged by static electricity.  Unless otherwise specified in the test procedure, the ECU and sensor should not be tested with a pointer ohmmeter, but with a high- impendence digital meter....

  • Page 5: Table Of Contents

    LAUNCH X-431 Module S2 User Manual CONTENTS 1. INTRODUCTION ..................... 1 1.1 P RODUCT ESCRIPTION ....................1.2 C & C OMPONENTS ONTROLS ................... 1.3 P ERFORMANCE ARAMETERS ..................1.4 P ACKING IST ........................2. INITIAL USE ......................9 2.1 C ONNECTION ........................
  • Page 6 LAUNCH X-431 Module S2 User Manual 5.2 H DRAWN ........................6. TIMING WAVEFORM ................... 42 7. MULTIMETER ....................... 44 7.1 H OW TO ONNECT ......................7.2 H OW TO PERATE ......................7.3 D ETECTION XAMPLE ......................www.diagtools.eu, Pernavas 43A, Riga, Latvia, LV-1009, +37129416069, info@diagtools.eu...

  • Page 7: Introduction

    Through this function, users can test voltage, resistance, and capacitance. The function uses the same hardware device as the sensor module. The module cannot be used separately, and must be used together with Launch-specific diagnostic tools compatible with this module. www.diagtools.eu, Pernavas 43A, Riga, Latvia, LV-1009, +37129416069, info@diagtools.eu...

  • Page 8: Components & Controls

    LAUNCH X-431 Module S2 User Manual 1.2 Components & Controls Name Description Multimeter common www.diagtools.eu, Pernavas 43A, Riga, Latvia, LV-1009, +37129416069, info@diagtools.eu...
  • Page 9 LAUNCH X-431 Module S2 User Manual V/Ω/C Multimeter measuring terminal Press this button to start up and shut Power button down. It is connected to the diagnostic device B-type USB interface via a USB cable. If the green lamp is steady on, the battery electric quantity is normal.

  • Page 10: Performance Parameters

    LAUNCH X-431 Module S2 User Manual battery to supply power. Power the module through the battery Power interface clamps cable. 1.3 Performance Parameters Sensor module: Parameter Range Number of channels Precision Amplitude range 0~20V Max output current 20mA Predefined frequency range...
  • Page 11 LAUNCH X-431 Module S2 User Manual Fixed frequency simulation Support Predefined waveform simulation Support Hand-drawn waveform Support simulation Signal generator interface External power supply port Solenoid interface Multimeter interface Working temperature 0℃~50℃ Storage temperature -30℃~70℃ Multimeter: Parameter Range DC voltage...

  • Page 12: Packing List

    LAUNCH X-431 Module S2 User Manual 1.4 Packing List Sensor module accessories include sensor test cables, probes, etc. Due to different product configurations, the accessories included in the product may be different from those listed in this manual. For the specific accessories included in the product, refer to the packing list attached to the product.
  • Page 13 LAUNCH X-431 Module S2 User Manual to the car battery for power. Battery clamps cable Used to connect the sensor module to the car battery only using the Actuator module. Used to connect the sensor module and USB cable diagnostic tool, and send the signal collected by the sensor module to the diagnostic tool for waveform display.
  • Page 14 LAUNCH X-431 Module S2 User Manual Multimeter test pen (black + red) During a multimeter function test, it must be connected to the COM and V/Ω/C terminals of the sensor module. They are mainly used for piercing the Back Probe Pins...

  • Page 15: Initial Use

    LAUNCH X-431 Module S2 User Manual 2. Initial Use 2.1 Connection Insert one end (B-type terminal) of the USB cable into the B-type USB port of the sensor module host, and then insert the other end into the USB port of the diagnostic tool.

  • Page 16: Job Menu

    LAUNCH X-431 Module S2 User Manual Start the diagnostic tool and access the toolbox. Tap Sensor Simulator to access the job menu of sensor. 2.2 Job Menu The sensor module is mainly divided into five functional modules. 1) Sensor: Use output voltage or waveform to simulate the working status of the on-board sensor, so as to accurately judge the quality of the sensor and reduce blind replacement of accessories.

  • Page 17: Sensor

    LAUNCH X-431 Module S2 User Manual 3. Sensor 3.1 Connection The sensor simulation function can accurately judge the quality of the sensor and reduce blind replacement of accessories. For example, the DTC shows that the water temperature sensor is faulty, but whether it is the fault of the water temperature sensor itself, or the wiring between the sensor and ECU, or the fault of the ECU itself still needs further diagnosis.
  • Page 18 LAUNCH X-431 Module S2 User Manual (1) The BNC connector of the HT30 test line is connected to CH1 or CH2 (can be connected to both CH1 and CH2 as required), and the other end (divided into two ways, red is signal line, black is ground line) is connected to any two ways of the 6-way lead.

  • Page 19: How To Operate

    LAUNCH X-431 Module S2 User Manual 3.2 How to Operate There are three types of sensors: DC, AC and frequency modulation PFM. 3.2.1 DC Sensor *Remarks: The following waveform is a sample waveform, not the actual output waveform. Users can refer to it to change the voltage to achieve the function.
  • Page 20 LAUNCH X-431 Module S2 User Manual Drag the yellow slider to change the output voltage value of CH1 PEAK to simulate the water temperature change. *Remarks: 3v~5v in cold; after warm-up, it goes down to 1v; Negative temperature coefficient sensor.
  • Page 21 LAUNCH X-431 Module S2 User Manual Output channel: CH1 Output type: DC voltage Drag the yellow slider to change the output voltage value of CH1 to simulate the intake air pressure change. 4) Throttle position sensor Output channel: CH1, CH2 Output type: DC voltage Drag the yellow slider to change the output voltage value of CH1.
  • Page 22 LAUNCH X-431 Module S2 User Manual *Remarks: CH1 and CH2 output voltage at the same time, and the sum of output voltage is 5V. If the voltage of CH1 or CH2 is adjusted separately, the other channel will be linked.
  • Page 23 LAUNCH X-431 Module S2 User Manual 6) Air flow sensor Output channel: CH1 Output type: DC voltage Drag the yellow slider to change the output voltage value of CH1 to simulate the air flow. 7) Zirconia type oxygen sensor Output channel: CH1...

  • Page 24: Ac Sensor

    LAUNCH X-431 Module S2 User Manual acceleration and deceleration status. 8) Titanium dioxide type oxygen sensor Output channel: CH1 Output type: square wave Drag the yellow slider to change the output frequency of CH1 to simulate the acceleration and deceleration status.
  • Page 25 LAUNCH X-431 Module S2 User Manual Output channel: CH1 Output type: sine wave Drag the CH1 amplitude slider to change the output amplitude. Drag the CH1 frequency slider to change the output frequency. X is used to change the output quantity of sine wave x. Y is used to change the output quantity of the straight line y.
  • Page 26 LAUNCH X-431 Module S2 User Manual 2) Magneto-electric camshaft position sensor Output channel: CH1 Output type: sine wave Drag the frame slider to change the total number of frames that is output at a time. Drag the frequency slider to change the output frequency.
  • Page 27 LAUNCH X-431 Module S2 User Manual 3) Magneto-electric ABS wheel speed sensor Output channel: CH1 Output type: sine wave Drag the CH1 amplitude slider to change the output waveform amplitude. Drag the CH1 frequency slider to change the output waveform frequency to simulate idle speed and acceleration status.

  • Page 28: Frequency Modulation

    LAUNCH X-431 Module S2 User Manual Drag the CH1 amplitude slider to change the output waveform amplitude. Drag the CH1 frequency slider to change the output waveform frequency to simulate idle speed and acceleration status. 5) Knock sensor Output channel: CH1...
  • Page 29 LAUNCH X-431 Module S2 User Manual 1) Digital air flow sensor Output channel: CH1 Output type: square wave Drag the yellow slider to change the output frequency of CH1 to simulate the acceleration and deceleration status. 2) Reluctance ABS wheel speed sensor...
  • Page 30 LAUNCH X-431 Module S2 User Manual acceleration and deceleration status. 3) Hall speed sensor Output channel: CH1 Output type: square wave Drag the yellow slider to change the output frequency of CH1 to simulate the acceleration and deceleration status. 4) Hall crankshaft sensor...
  • Page 31 LAUNCH X-431 Module S2 User Manual Drag the CH1 PEAK slider to change the output amplitude. Drag the CH1 FREQ slider to change the output frequency. X is used to change the output quantity of square wave x. Y is used to change the output quantity of the straight line y.

  • Page 32: Actuator

    LAUNCH X-431 Module S2 User Manual 4. Actuator 4.1 Connection This function is used to output PWM signals to drive the vehicle-mounted coil actuator to work, and check the working status to confirm the quality of the actuator. The following connections are required for detecting the function: Connect the sensor module to the diagnostic tool via the USB cable (refer to Chapter 2.1).
  • Page 33 LAUNCH X-431 Module S2 User Manual 1) Connect one end of the 7-pin interface adapter cable to the 7-pin interface, and connect the other end (there are 6 safety banana head lines, each safety banana head line is numbered and with positive and negative terminals, which must be noted during use) to the 6-way breakout leads as required.

  • Page 34: How To Operate

    LAUNCH X-431 Module S2 User Manual 4.2 How to Operate The actuators are classified as follows: independent ignition module (COP), idle speed motor, EGR valve, carbon can solenoid valve, turbocharged solenoid valve, fuel spray nozzle, VVT solenoid valve, electronic throttle valve assembly, air conditioning fan.

  • Page 35: Idle Speed Motor

    LAUNCH X-431 Module S2 User Manual Output ports: solenoid 1 (SV1) and solenoid 2 (SV2) Output type: adjustable duty cycle square wave Drag the SV1 PWM slider to change the output duty cycle of SV1. Drag the SV1 FREQ slider to change the output frequency of SV1.
  • Page 36 LAUNCH X-431 Module S2 User Manual Operation method: Output ports: solenoid 1 (SV1) and solenoid 2 (SV2) Output type: adjustable duty cycle square wave Drag the duty cycle sliders to change the output duty cycles of SV1 and SV2. Drag the frequency sliders to change the output frequencies of SV1 and SV2.

  • Page 37: Egr Valve

    LAUNCH X-431 Module S2 User Manual motor. The stepper motor can react only by tapping the Reverse or Positive button. (The so-called forward and reverse directions are not fixed, and are determined by the hardware connection.) 4.2.3 EGR Valve Wiring mode:...

  • Page 38: Carbon Can Solenoid Valve

    LAUNCH X-431 Module S2 User Manual Output ports: solenoid 1 (SV1) and solenoid 2 (SV2) Output type: adjustable duty cycle square wave Drag the PWM sliders to change the output duty cycles of SV1 and SV1. Drag the FREQ sliders to change the output frequencies of SV1 and SV2.

  • Page 39: Turbocharged Solenoid Valve

    LAUNCH X-431 Module S2 User Manual Output ports: solenoid 1 (SV1) and solenoid 2 (SV2) Output type: adjustable duty cycle square wave Drag the SV1 PWM slider to change the output duty cycle of SV1. Drag the SV1 FREQ slider to change the output frequency of SV1.

  • Page 40: Fuel Spray Nozzle

    LAUNCH X-431 Module S2 User Manual Output ports: solenoid 1 (SV1) and solenoid 2 (SV2) Output type: adjustable duty cycle square wave Drag the SV1 PWM slider to change the output duty cycle of SV1. Drag the SV1 FREQ slider to change the output frequency of SV1.

  • Page 41: Vvt Solenoid Valve

    LAUNCH X-431 Module S2 User Manual Operation method: Output ports: solenoid 1 (SV1) and solenoid 2 (SV2) Output type: adjustable duty cycle square wave Drag the SV1 PWM slider to change the output duty cycle of SV1. Drag the SV1 FREQ slider to change the output frequency of SV1.
  • Page 42 LAUNCH X-431 Module S2 User Manual Line 1: SV1\2 + Line 2: SV1\2 - Camshaft intake valve Line 3: SV1\2 + Line 4: SV1\2 - *Remarks: This is a coil actuator. Operation method: Output ports: solenoid 1 (SV1) and solenoid 2 (SV2) Output type: adjustable duty cycle square wave Drag the SV1 PWM slider to change the output duty cycle of SV1.

  • Page 43: Electronic Throttle Valve Assembly, Air Conditioning Fan

    LAUNCH X-431 Module S2 User Manual 4.2.8 Electronic throttle valve assembly, air conditioning fan Wiring mode: Electronic throttle assembly: Line 1: SV1\2 + Line 2: SV1\2 - *Remarks: This is a coil actuator. A/C fan: Line 1: SV1\2 + Line 2: SV1\2 - *Remarks: This is a coil actuator.
  • Page 44 LAUNCH X-431 Module S2 User Manual Output ports: solenoid 1 (SV1) and solenoid 2 (SV2) Output type: adjustable duty cycle square wave Drag the SV1 PWM slider to change the output duty cycle of SV1. Drag the SV1 FREQ slider to change the output frequency of SV1.

  • Page 45: Defined/Drawn

    LAUNCH X-431 Module S2 User Manual 5. Defined/Drawn Defined means that users operate by themselves with no special restriction and various defined waveforms can be switched and output at any time. In addition to customization, it also supports hand-drawing, which has a great degree of freedom.

  • Page 46: Hand- Drawn

    LAUNCH X-431 Module S2 User Manual  Phase: set the phase of the selected waveform.  Duty cycle: set the duty cycle of the selected waveform. Signal sync can cause CH1 and CH2 to output signals at the same time.
  • Page 47 LAUNCH X-431 Module S2 User Manual  Amplitude: Amplitude of the output waveform.  Offset: Offset of the output waveform. When drawing a waveform, if you lift the finger at the edge, the drawn waveform will be sent out automatically.

  • Page 48: Timing Waveform

    LAUNCH X-431 Module S2 User Manual 6. Timing Waveform The function is used to match the timing waveform (crankshaft + camshaft) of the engine. Refer to Chapter 3.1 for connection methods. Tap Timing Waveform on the sensor module function main page to access the following page.
  • Page 49 LAUNCH X-431 Module S2 User Manual wave, reverse square wave, medium straight line level, low straight line level, and high straight line level. CH2 waveforms in each cycle are adjustable, and the options are as follows (take cycle 0 as an example).

  • Page 50: Multimeter

    LAUNCH X-431 Module S2 User Manual 7. Multimeter 7.1 How to Connect 1) First, power on the sensor module. 2) Connect the B-type terminal of the USB cable to the B-type interface, and the other end to the USB interface of the diagnostic tool.

  • Page 51: Detection Example

    LAUNCH X-431 Module S2 User Manual : On-off : Capacitance : Resistance : Diode 7.3 Detection Example Knock sensor detection (1) Detect knock sensor resistance Turn off the ignition switch, disconnect the knock sensor wire connector, and use "resistance measurement "...
  • Page 52 LAUNCH X-431 Module S2 User Manual temperature conditions. Compare the measured value with the standard value. If the standard value is not met, the coolant temperature sensor should be replaced. (2) Detect coolant temperature sensor output signal voltage Install the coolant temperature sensor, insert the sensor wire connector, turn on the ignition switch, and test the sensor output voltage signal between the two terminals of the coolant temperature sensor wire connector.
  • Page 53 The exclusive remedy for any automotive meter found to be defective is repair or replacement, and LAUNCH shall not be liable for any consequential or incidental damages.
  • Page 54 Attn: Customer Service Department LAUNCH TECH CO., LTD. Launch Industrial Park, North of Wuhe Avenue, Banxuegang, Bantian, Longgang, Shenzhen, Guangdong P.R.China, 518129 Launch website: http://www. cnlaunch.com http://www.x431.com www.diagtools.eu, Pernavas 43A, Riga, Latvia, LV-1009, +37129416069, info@diagtools.eu...
  • Page 55 元征科技 X-431 Module S2 传感器模块用户手册 Statement: Launch reserves the rights to change the product design and specifications without prior notice. The appearance and color of the actual product may be different from those shown in the manual. Please refer to the actual product.

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