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YANTEK YD308, User Manual

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YANTEK YD308 User Manual Download Page 18

While  the  tool  is  in  Resistance  mode,  using  the  probe  tip  with  chass

 

is  ground  or  the  auxiliary  ground  lead,  continuity  can  be  tested  on 
wires  and  components  attached  or  disconnected  from  the  vehicle’s 
electrical  system.

When  the  probe  tip  is  contacting  a  good  ground,  the  LCD  will  indicate 
“0.0Ω”  and  green  LED  will  be  on.   a  beep  tone  will  sound

（

Figure  9

）

3.2  Continuity  Testing 

Figure  8

17

Summary of Contents for YD308

Page 1: ......

Page 2: ...RITY TESTING 16 3 2 CONTINUITY TESTING 17 3 3 SIGNAL CIRCUIT TESTING 19 3 4 ACTIVATING COMPONENTS IN YOUR HAND 20 3 5 TESTING TRAILER LIGHTS AND CONNECTIONS 21 3 6 ACTIVATING COMPONENTS IN THE VEHICLE 21 3 7 ACTIVATING COMPONENTS W GROUND 23 3 8 CHECKING FOR BAD GROUND CONTACTS 24 3 9 FOLLOWING LOCATING SHORT CIRCUITS 24 3 10 RED GREEN POLARITY LED 24 4 TEST TOOL SPECIFICATIONS 25 5 TEST TOOL KNOW...

Page 3: ...lectrical fires nearby Keep clothing hair hands tools test equipment etc away from all moving or hot engine parts Don t connect or disconnect any test equipment while the ignition is on or the engine is running Operate the vehicle in a well ventilated work area Exhaust gases are poisonous Keep the tool dry clean free from oil water or grease Use a mild detergent on a clean cloth to clean the outsi...

Page 4: ...2 Probe Tip Contacts the circuit or component to be tested 2 Using the Test Tool 2 1 Tool Description 1 1 2 3 5 Head Lights Illuminates dark work areas or work areas at night 2 6 7 4 ...

Page 5: ...okup clips 4 Probe tip 5 20ft extension cable 6 Rugged blow molded case 2 2 Specifications 2 3 Accessories Included Red Green Polarity Indicator Identifies positive negative or open circuits The RED Indicator lights when the Probe Tip is contacting a positive circuit The GREEN Indicator lights when the Probe Tip is contacting a negative circuit 3 LCD Display Indicates test results Auxiliary Ground...

Page 6: ...d to activate the tip with a positive voltage The Red LED should light and the LCD display will read the battery voltage A beep tone will sound Let go of the power switch and the LED will turn off and the tone will cease 2 4 General Description 2 5 Power 2 6 Quick Self Test Determine at a glance if a circuit is positive negative or open without having to reconnect clips from one battery pole to an...

Page 7: ...a negative voltage The Green LED should light and the LCD display will read the 0 0V ground A beep tone will sound Let go of the power switch and the LED will turn off and the tone will cease Your tool is working correctly and is now ready for use Figure 1 Figure 1 The tool is short circuit protected Its internal circuit breaker will trip if it becomes overloaded The circuit breaker is a valuable ...

Page 8: ...idered an added precaution against accidental pressing of the power switch 2 8 Work mode Ω Figure 2 Auto Circuit Breaker Break Figure 3 YD 308 Ω 0 5 HZ P N When power on the Main Menu displays Figure 3 There are 9 functional modes to diagnose the electrical systems You can select the function icon by pressing UP DOWN LEFT RIGHT and press the MIDDLE button to enter the corresponding functional mode...

Page 9: ... mode contact the probe tip to a circuit LCD displays the Max Voltage the Min voltage and frequency Figure 5 Figure 5 AC FREG 10 4 Max 0 0 Min 5 2 K Freg HZ Resistance While in this mode contact the probe tip to a circuit LCD displays the resistance of the tip and auxiliary ground lead Figure 6 7 VDC 12 1 V TIP VOLTAGE 12 0 12 1 MIN MAX V V ...

Page 10: ...e negative of diode figure 7 Diode Testing DIODE Forward Bias 268 1 Figure 7 Power Supply Mode The mode includes three ways of power supply and safety electric current setting figure 8 POW SWITCH 18A MOMENT LATCH PULSE SETTING Figure 8 8 ...

Page 11: ...he status of power output the red light on When the tip is in the status of ground green light on Otherwise the lights off Contact the probe tip to a circuit LCD will display the voltage of the tip and auxiliary ground lead current and resistance Figure 10 MOMENT 00 0V 00 0A 1K Figure 10 LATCH Mode Press UP button the probe tip outputs voltage Press DOWN button the probe tip contacts ground Press ...

Page 12: ...us of ground green light on Otherwise the lights off Contact the probe tip to a circuit LCD will display the voltage of the tip and auxiliary ground lead current and resistance Figure 12 LATCH 11 4v 0 22A 53 5 Figure 12 PULSE Mode Press UP button normal mode for 1 second voltage output for 1 second then repeatedly Press DOWN button normal mode for 1 second ground for 1 second then repeatedly Figur...

Page 13: ...D will display the voltage of the tip and auxiliary ground lead Figure 14 PULSE 12 0v Figure 14 SETTING Mode Setting current protection from 2 18A The device will disconnect from the relay and exit from function menu once current is overlarge Figure 15 SETTING 16A Figure 15 Voltage Supply While in this mode you can set voltage output 0 5V variable voltage value 0 5V Figure 16 VOLTS SUPPLY VOLTS VR...

Page 14: ...Feed 87 NO 86 85 Solenoid Figure 18 5 Pin Relay Connect the black line to 30 pin green line to 87A pin red line to 87 pin In this case the green light on and the red light off Figure 19 Then connect the probe tip to 85 pin ground line connect to 86 pin In this case press UP button the green light off and red light on Figure 20 This shows the relay is good Otherwise it s bad 12 ...

Page 15: ...Figure 19 13 85 30 87 87A 86 No contact No contact ...

Page 16: ...red light on This shows the relay is good Otherwise it s bad AC Frequency While in the mode connect the probe tip to a circuit it can show the frequency on the LCD quickly and precisely Figure 21 HZ FRQ CTR 0976 HZ Figure 20 P N While in this mode connect the probe tip to a circuit the LCD will display if it is ground line or not If not it will display the voltage Figure 22 P N Positive Negative E...

Page 17: ... positive circuit the red led light on the LCD displays the voltage with 0 1V resolution Audio tone indicator sounds If the probe tip connects to negative circuit the green led light on the LCD will display 0 1v voltage Audio tone indicator sounds If the OPEN circuit both LEDs off igure probe tip connects to F 7 16 ...

Page 18: ...ary ground lead continuity can be tested on wires and components attached or disconnected from the vehicle s electrical system When the probe tip is contacting a good ground the LCD will indicate 0 0Ω and green LED will be on a beep tone will sound Figure 9 3 2 Continuity Testing Figure 8 17 ...

Page 19: ...18 In other cases the LCD only indicates the resistance value Figure 10 If the resistance value is greater than 100kΩ the LCD will show 0L Figure 10 Figure 9 600Ω Ω ...

Page 20: ...sing the power switch If the circuit breaker trips you know that you have a good solid low resistance connection NOTE You can use the probe tip to pierce the plastic insulation on a wire This means that you can test the circuit without disconnecting anything 3 3 Signal Circuit Testing Set the tool in AC Voltage mode using the probe tip with chassis ground or the auxiliary ground lead Apply vacuum ...

Page 21: ...he green LED should light indicating continuity through the component While keeping an eye on the green LED quickly press and release the power switch forward If the green LED went out and the red LED came on you may proceed with further activation Rock the power switch forward and hold it down to provide power to your component With the power switch rocked forward power will flow from the positiv...

Page 22: ...nent you are testing is short circuited The component is a very high current component i e starter motor While the tool in DC Voltage mode clip the auxiliary ground lead to the trailer ground probe the contacts at the jack and then apply voltage to the probe tip This lets you check the function and orientation of the connector and trailer lights Figure 13 3 5 Testing Trailer Lights and Connections...

Page 23: ...ly applying voltage to certain circuits can cause damage to a vehicle s electronic components Therefore it is strongly advised to use the vehicle manufacturer s schematic and diagnosing procedure while testing NOTE When powering up components you can increase the life of power switch if you first press the switch then contact the tip to the component The arcing will take place at the tip instead o...

Page 24: ...nt or if the circuit breaker tripped the tool has been overloaded This could happen for the following reasons WARNING With this function if you are contacting a protected circuit a vehicle s fuse can be blown or tripped if you apply ground to it 3 7 Activating Components w Ground If the circuit breaker is tripped reset it by waiting for it to cool down 15 sec The contact you are probing is a direc...

Page 25: ...ire as far as you can along the wiring harness Here is an example for this application If you are following a short in the brake light circuit you may know that the wire must pass through the wiring harness at the door sill Locate the color coded wire in the harness and expose it Probe through the insulation with the probe tip and depress the power switch forward to activate and energize the wire ...

Page 26: ...ws you to determine a voltage drop without running back to check the battery It s just another one of time saving feature the tool has 4 Test Tool Specifications DC voltage range 0 65V 1 digit Resistance range 0 100 KΩ Frequency response of tone pass through 0Hz to 10Khz Circuit Breaker Rating current 1 10 Amp 1 Is the 308 Probe Tester computer and air bag safe 5 Test Tool Know how The tool LED an...

Page 27: ...red by anyone other than the Manufacturer s Service Center It s not be liable for any incidental or consequential damages arising from the use misuse or mounting of the test tool Some states do not allow limitations on how long an implied warranty lasts so the above limitations may not apply to you All information in this manual is based on the latest information available at the time of publicati...

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