Woolich Racing provides hardware and software solutions for writing tune files to the ECU, thereby modifying the vehicle performance. This all relies on our Woolich Racing Tuned software being able to communicate with the ECU via a Woolich Racing communication interface like the Log Box or USB. If there are problems with communication it is important to be able to quickly test the interface and its basic functions.
This guide explains how to test the USB D v3 and Log Box D v3 interfaces for Denso ECUs.
On the "Tools" menu in the Woolich Racing Tuned software there is an item for "Test Interface", this allows the basic interface communications to be tested as described below.
Note: The following only applies to the USB D v3 and Log Box D v3 interfaces for Denso ECUs as shown below.
To Test Flashing Mode
1. Ensure the interface is NOT plugged into an ECU.
2. Put a jumper wire from pin 3 to pin 7 on the interface.
The plug pin out above is the 8-pin Molex socket on the interface.
3. Connect the USB cable from the interface to the computer.
4. Move the mode switch on the interface to the right hand side position to the Read / Write mode.
Note: The v3 interface may not show the red LED until 'Test Interface' has been started.
5. Open the Woolich Racing Tuned software, go to "Tools" and then click on "Test Interface".
Voltage Tests on Denso v3 interfaces ONLY
Use a multimeter in a DC voltage setting to perform the following tests.
1. Connect the USB cable from the Interface to the computer.
2. Move the mode switch on the interface to the right hand side position to the Read / Write mode.
3. Open the Woolich Racing Tuned software .
4. Select and open a Bin file that uses a Denso Interface (eg. .
5. Click Read or Write ECU and measure the voltage between pin 4 and pin 8 on the interface, this should be 4.5-5V when in flashing mode (Red LED on)
6. Click Read or Write ECU and Measure the voltage between pin 1 and pin 8 on the interface, this should be 4.5-5V when in flashing mode (Red LED on).
The plug pin out above is the 8-pin Molex socket on the interface.
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