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Connect to an engine

Establish communication between Guidanz Diagnostic Toolkit (GDTK) and the engine or ECM you want to service.

Expected result

Guidanz establishes a connected session through the selected datalink adapter and detects the equipment and supported control modules.

After intake, Equipment Summary displays available equipment information and detected devices. Selecting a Cummins engine or control module opens its Device Dashboard.

Important notes / prerequisites

You must be signed in to Guidanz Diagnostic Toolkit before connecting to an engine.
Use a supported datalink adapter.
For Windows, Guidanz supports available USB adapters and paired Bluetooth adapters.
The datalink adapter must be connected to the equipment and powered.
For Bluetooth, the adapter must already be paired or placed into pairing mode.
Multi-Level Security (MLS) can keep protected actions locked while the ECM remains connected and readable. See Manage ECM passwords for authorization and password management.
Do not use Simulator Mode when connecting to physical equipment. Adapter connections are disabled in Simulator Mode.

Training video

GDTK Windows Engine Connection & Intake

Watch on YouTube

Windows procedure

Connect the datalink adapter to the engine or equipment and to the Windows computer as required.
Open Guidanz Diagnostic Toolkit.
From the Home page, select Analyze Equipment.
On the Connect to Equipment screen, expand Engine-Driven Equipment Datalink Adapters.
Locate the adapter under Available USB Adapters or Available Bluetooth Adapters. Plug in a USB adapter or pair a Bluetooth adapter before attempting to connect. A listed adapter entry does not by itself confirm that the adapter is connected.
Select the entry for the connected or paired adapter to connect.
Wait while Guidanz detects the equipment and control modules.
On the intake screens, confirm the engine serial number (ESN), hours, and mileage.
Check or uncheck Create ECM Image according to whether you want to create an ECM image.
Continue to Equipment Summary, then select the applicable Cummins engine or control module to open its Device Dashboard.

Common problems

Adapter is not available

A Bluetooth adapter shown as Not Available cannot be selected. It may be out of range, in use by another computer or phone, or not detected. Make sure it is powered on and its indicator lights are on.

No USB adapters are available

Install the required adapter drivers, reload the connection page, and confirm the adapter is connected to the computer.

No Bluetooth adapters are available

Connect and power the adapter, put it into pairing mode, use Windows Bluetooth settings to add it, and return to Guidanz.

Guidanz cannot connect to the adapter

Confirm the adapter is powered, within range, and not being used by another device. Refresh or scan for adapters and select it again.

A protected action is locked

Open the toolbar three-dot menu and select Manage Passwords to review or unlock the required authorization level. See Manage ECM passwords.

Connection is lost after connecting

Use Reconnect to Adapter from the connection controls.

DTK Mobile differences

GDTK Mobile: Bluetooth adapter pairing

GDTK Mobile uses Bluetooth datalink adapters. The initial pairing procedure differs between Android and iOS.

Initial pairing: prepare and identify the adapter

Connect the adapter to the equipment and make sure the adapter is powered.
For INLINE Mini, press and hold the reset button at the end of the adapter for approximately 2–3 seconds to put it into pairing mode.
The adapter light flashes for approximately 2 minutes. Complete pairing with your mobile device while the light is flashing. If the pairing window expires, put the adapter into pairing mode again.
Use the last few digits of the serial number (S/N) on the adapter label to identify the correct adapter in the Bluetooth device list.

Android: pair within the app

With the adapter in pairing mode, open the adapter-selection screen in GDTK Mobile.
On Select a Bluetooth Adapter, locate the adapter. Use Scan for Adapters if needed.
Match the identifying digits to the S/N on the adapter label, then select the adapter to pair and connect.

iOS: pair in Bluetooth settings

With the adapter in pairing mode, open Settings on the iPhone or iPad, then open Bluetooth.
Make sure Bluetooth is on. Locate the adapter under Other Devices and match the identifying digits to the S/N on its label.
Select the adapter to pair and connect, then return to GDTK Mobile to continue connecting to the equipment.

Subsequent connections

After the initial pairing, the mobile device can find the adapter on subsequent connections without pressing the adapter reset button again. Make sure the adapter is powered, nearby, and available, then select it to connect.

Firmware updates and connection status

If an INLINE Mini firmware update is required, Guidanz updates it after selection. Reconnect the INLINE Mini after the update completes.

Mobile may report Paired, Out of Range, In Use by Other Device, or Could Not Connect to Adapter. Confirm the adapter is powered, nearby, and not connected elsewhere.