VEMS V3MS DASH7 Quick Manual Download Page 16

TROUBLESHOOTING: 

1.

 

Power is turned ON, but the screen is dark and LEDs are OFF:

 Dash7 probably has no power. Check your 

power supply and plug again all connectors. With ignition ON, check if voltage between pins B8 and C8 on 
the main connector is the same as battery voltage (usually 12-14V, must not be less than 6 and more than 
18V!) and if polarity is not reversed. If there is no voltage, check grounding, fuses and switches. Check if 
voltage between pins 1 and 6 of PWR connector is about 5V. If everything is as described, contact our tech 
support. 

2.

 

Text “INITIALIZING” is flashing more than 3 seconds and message “INITIALIZATION FAILURE” is displayed

The data connection between the main unit and the display unit is probably missing. Check continuity of the 
wiring between the Main Unit and the Display unit (main connector and PWR connector). Plug again all 
connectors and secure them on its positions. If everything is as described, contact our tech support. 

3.

 

Initialization was successful and you can see data pages, but all gauges shows numbers 888 or 0

: There is 

probably a missing connection between the Dash7 and the ECU or there is no data coming from the ECU. 
Check connection between Dash7 Main unit and VEMS ECU (RS232 connector) and check if the ECU is 
powered ON. Check if your ECU is not “PASSWORD PROTECTED”.  If yes, disable password protection (or ask 
your tuner), because with password protection activated the ECU do not send out any data in Triggerframe 
protocol. 

4.

 

Dash7 resets while driving or screen flickers:

 The display unit probably has a low or unstable supply voltage. 

Check the quality of the power supply. Check if Dash7 power supply voltage during driving is not dropping 
under 8 volts (normally it should be over 12 or 13V). Check the wiring between main unit and display unit 
and secure all connectors on its positions. Check if voltage between pins 1 and 6 in the PWR connector is 
about 4.8-5.2V while driving. Check if there is not a broken wire between Main unit and the Display unit. If 
everything is as described, contact our tech support. 

5.

 

I can’t see any OnScreen Warning (OSW) Messages even when values are out of their limits

: Probably you 

have turned off displaying OnScreen Warning messages. In the menu "Alarms", check that the "OnScreen 
Warnings ON/OFF" icon is set to "ON" (icon of the display with a green tick). If not, move your cursor to the 
“OSW ON/OFF icon” and press OK button to display the icon with a green tick. You should see a message 
“On Screen Warnings ON”. Warning messages can also be turned off temporarily if on some data page the 
user presses the "left arrow" button on the remote control. Then a red crossed-out speaker icon will appear 
in the corner of the screen. To start displaying the OSW messages again, it is enough if the user presses the 
"left arrow" button again (a red crossed-out speaker icon will turn off).  

6.

 

I can’t hear any sound when startup or when warning messages are displayed

: Probably you have your 

buzzer turned off. In the menu "Alarms", check that the "Alarm Buzzer ON/OFF" icon is set to "ON" (icon of 
the green speaker). If not, move your cursor to the “Alarm Buzzer ON/OFF icon” and press OK button to 
display a green speaker icon. Buzzer can also be turned off temporarily if on some data page the user 
presses the "left arrow" button on the remote control. Then a red crossed-out speaker icon will appear in 
the corner of the screen. To allow buzzer again, it is enough if the user presses the "left arrow" button again 
(a red crossed-out speaker icon will turn off). 

7.

 

Buttons on remote control are acting in wrong direction:

 You probably have the remote control orientation 

set incorrectly. Go to menu “Display” and change the orientation setting of remote controller. This function 
is available only for GUI V3.6.2KN or higher. Older GUIs use a fixed remote control orientation. 

8.

 

Cannot control the Dash7 by buttons on the remote controller:

 Probably the display unit is not connected 

to the buttons or the buttons are faulty. Check if the connector from remote controller (labeled CNTRL) is 
connected to the connector CNTRL on the back of the Display unit. Check the continuity between middle pin 
(pin7) of CNTRL connector on the display unit and vehicle ground (GND). Unplug CNTRL connector and check 
if there is a short circuit between middle pin (pin7) and other pins when you press buttons on the remote 
controller. If everything is as described, contact our tech support. 

9.

 

GUI update does not start even if the microSD card is inserted in the display unit: 

If microSD card is 

inserted correctly and after restarting the Dash7 starts normally (not on the white Update page), the 
microSD card is probably faulty or not properly formatted, not inserted correctly or the card does not have a 
valid GUI file (*.tft) or there are more than a one *.tft files on the microSD card.  If the card is formatted 

Summary of Contents for V3MS DASH7

Page 1: ...for VEMS ECUs Digital Dashboard for standalone ECUs VEMS V3 x QUICK GUIDE For model HW22 12560N7P 3rd revision 12 2022...

Page 2: ...ASH7 i Base connection WIRING DIAGRAM d Full connection of DASH7 i Analog Inputs for 0 5V sensors ii Digital Inputs for vehicle lights status 12V iii Digital inputs switched to Ground 3 Controls a Qui...

Page 3: ...parts of display unit 1 Body 2 7inch TFT screen 3 Shift light LED diodes 4 Warning LED diodes 5 Micro SD Card slot 6 Power connector 7 Control buttons connector 8 CR1220 Clock Battery cover 9 Mountin...

Page 4: ...rol the main functions of display switching screens adjusting brightness hide warnings change settings etc Without this connector connected the Dash7 will work normally but you will be unable to contr...

Page 5: ...ct to the 12V of low beam light bulb Pin B2 Input 5 High Beam Lights 12V connect to the 12V of high beam light bulb Pin B3 Input 6 Turn Indicator LEFT 12V connect to the 12V of left turn ind bulb Pin...

Page 6: ...OR NAMED LCD 5 connect BLACK WIRE from pin C8 of main connector to the vehicle GROUND or battery NEGATIVE terminal 6 connect RED WIRE from pin B8 through 3A fuse to the main switch or ignition switch...

Page 7: ...se connection of Dash7 plus connection of additional inputs Inputs Dash7 can not only visualize data from ECU but also from its own analog and digital inputs 0 5V inputs are unprotected and they toler...

Page 8: ...wire to analog input pin C2 and use pull up resistor between 5V pin A1 and the signal pin C2 Resistor value must be calculated and depending on the sensor s resistance usually must be more than 1 kOhm...

Page 9: ...igurable input pin is used like a digital input for Neutral switch connect one side of Neutral switch to the GND and other side to the input pin C4 and use pull up resistor if necessary Working princi...

Page 10: ...hazard warning light indicator will automatically turn ON if both sides of the turn signals are flashing WARNING NEVER EXCEED 18 Volts on the 12V digital inputs or it may damage your Dash7 Below 9 vol...

Page 11: ...rm or change color by OK button Every menu page is different so there is a HELP TEXT on every page Help text is written in green color and give you an information about the button s function on the ac...

Page 12: ...7 2 Insert the microSD card with a new GUI file to the SD card adapter delivered with Dash7 card must be FAT32 formatted and the GUI file must be loaded into a root directory 3 Remove a dust protectio...

Page 13: ...n CSV format which allows you to open these files in many log viewers eg MegaLogViewer or other software Excel Word Notepad etc Files are named LogXXXX csv where XXXX is sequence number from 0000 to 9...

Page 14: ...damage by water or humudity is not covered by factory warranty Mounting conditions Before installation unplug the car s battery If possible mount the Dash7 on the place where it will not be exposed to...

Page 15: ...orrectly data from VEMS ECU will be displayed on your Dash7 screen If everything is working correctly you can now heat up the heatshrink on the Main unit connector remove protective film from the scre...

Page 16: ...ith a green tick If not move your cursor to the OSW ON OFF icon and press OK button to display the icon with a green tick You should see a message On Screen Warnings ON Warning messages can also be tu...

Page 17: ...ection between the Dash7 and the ECU or ECU is turned OFF If no data is available from the ECU the data logger does not log Connect the ECU and turn it on When data starts flowing from the ECU and log...

Page 18: ...18 Gear gauge still shows N or R even when another gear is engaged Probably Reverse gear input or Neutral gear input Dash7 configurable input are shorted to ground or their voltage is under 3 Volts I...

Page 19: ...been broken if anyone has opened or modified the device or its accessories All warranty repairs or modifications must be performed by the manufacturer or its authorized service otherwise the product w...

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