This chapter describes how to diagnose and repair a fault in a product. Select Diagnose and start your fault tracing.
Note: The screen images shown in the help may differ from those in Tech Tool depending on the product that is being diagnosed.
Note: Depending on the connected product you might not be able to navigate through the ordinary diagnose flow. In that scenario you will only see the DTC Viewer when selecting Diagnose. When you select Diagnose you will only see the DTC Viewer. For more information about the DTC viewer, see DTC list. and DTC details
The symptoms are presented in several levels in order to make it possible to select the most accurate symptom. By clicking on and expanding a symptom area (for example, Engine Start), specific symptoms will be presented (for example, Engine cranks but does not start).
Symptoms can be displayed with or without details. The symptom description is opened when a symptom that has an Edit icon is selected.
Note: To do changes, click the Back button in the lower right on the screen. This can be done in any step in the diagnostic flow.
You can quickly search for symptoms using the search field.
Note: the search function is not applicable to VCE and SDLG products.
Icon |
Description |
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Symptom with details that needs to be specified. |
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When details have been specified, this icon will be displayed next to the symptom |
The DTC List displays the detected DTCs in the product. See DTC list for detailed information.
Information about the currently selected DTC are shown under DTC details.
When there is no connection to a product, DTCs must be handled manually.
Information about the currently selected DTC are shown under DTC details.
Name |
Description |
Refresh |
Rereads the DTCs. If there is no connection to the product they must be selected manually. |
Clear |
Opens a separate window containing all connected DTCs. Select the control units you want to clear DTCs from. Note: To get the best result when clearing DTCs, it is recommended to select all control units. |
Filter |
Select which DTCs that shall be displayed in the list. |
Edit List... |
Set a status manually for a DTC and add it to the DTC list. |
Filter applied |
Displayed if there is an active filtration of the DTCs. |
Note: To avoid confusion about time mismatch it is good to know that when reading DTCs, Tech Tool is using local time (based on PC settings), while DTCs set in the product are using UTC.
Product Time — The date and time of the product.
Engine Hours — Total hours the engine had been running.
Readout Time — The date and time from the local computer.
Table Heading |
Description |
Control Unit |
The name of the control unit. |
DTC |
The DTC identifier and error type. |
Status |
The DTC can be active or inactive. |
Last Occurrence |
The date and time of the last occurrence of the DTC. |
Count |
Number of times the DTC has been detected. |
Details about the selected DTCs are shown in DTC Details. The information are divided into different areas — Detailed Information, Detailed Status Information, Service Information and Freeze Frame Information. Displayed information depends on the electrical system of the product.
Click the title row to expand the information.
Detailed Information
Table Heading |
Description |
Failure Type |
The name of the DTC. |
DTC Display Value |
The code that is displayed in the product’s information display. |
First Occurrence |
The date and time of the first occurrence of the DTC. |
Last Occurrence |
The date and time of the last occurrence of the DTC. |
OBD Remaining Days |
The remaining number of days. |
Detailed Status Information
This section contains more detailed information about the DTC. Applies only to products with VERSION 3 and 4 electrical system.
Service Information
Diagnostic information for the selected DTC.
Note: Applies only to Renault.
Freeze Frame Information
A freeze frame is a collection of values from a number of sensors and components, saved around the time when the error code was set.
This information is important since it can contain clues as to how the vehicle was being driven when the error occurred. It is also possible to read any abnormal sensor values or see if the vehicle was being driven under abnormal conditions when the error occurred.
Table Heading |
Description |
Parameter |
Contains static information from readout of Vehicle Mode, Outdoor Temperature, Odometer Value, Fan Speed, Vehicle Speed etc. |
ID |
The ID number of the parameter. |
Unit |
Parameter units. Percent, speed, pressure etc. |
Value |
The unit value for the parameter. |
The Select Diagnostic Procedure list is divided into the following sub headers.
Heading |
Description |
DTC: Active |
Active DTCs related to selected system. |
Function test |
Suggested fault tracing procedures based on selected symptoms and, when appropriate, answers to the symptom questions (from Driver Interview). |
DTC: Inactive |
Inactive DTCs related to selected system. |
Information |
Additional information. |
Icon |
Description |
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Reset the picture. |
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Zoom in the picture. |
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Zoom out the picture. |
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Move around the picture. |
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View additional information. |
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In progress. |
Different icons can be displayed in the Select Fault Tracing Area list.
Icon |
Description |
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The functional area or component area that can be fault traced. |
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This fault indication is not covered in the diagnostics steps in Tech Tool. Instead there is a reference to the service information. |
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No information is available in Tech Tool. There is a reference to external information that can be helpful. |
These icons symbolize different properties that are associated with the fault tracing.
Icon |
Description |
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Remove gearbox. |
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Requires a test drive. |
These icons show the status of the procedure.
Icon |
Description |
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Fault tracing has not been done/was aborted or the result was unknown. |
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Fault tracing was completed and no fault was found. |
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Fault tracing was completed and a fault was found. |
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Fault tracing could not be completed. |
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Fault tracing was completed and a fault was found. The fault was repaired and the verification was successful. |
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Fault tracing was completed and a fault was found. The fault was repaired but the verification failed. |
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Fault tracing was completed and a fault was found. The verification was not completed. |
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Fault tracing was completed but the cause of failure is unknown. |
The following information provides dynamic step-by-step instructions for the user on how to fault trace a specific problem after starting the diagnostic procedure.
The start page will provide information in a hub-navigation manner rather than using the step by step interface. It displays a dashboard with relevant information to help finding the root of a problem. The hub-navigation let you create your own fault tracing work flow.
Note: Click the help button if you need any guidance with the diagnosing process using the hub-navigation dashboard.
Note: In the Tech tip there is useful information for the technician to help diagnose the system.
You can start some operations straight from the Diagnose dashboard.
Refresh of DTCs can be done straight from the Diagnose dashboard.
In the tool list you will find the various tools needed to perform the fault tracing.
Click the various tools to see a detailed image of the tool needed.
The table contains information about the available options for the images shown in the fault tracing steps. Depending on the fault tracing, the available buttons may vary.
Icon |
Description |
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View an explanatory picture that is connected to the text displayed on the right hand side. This is the default picture. |
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View picture that shows the component location. |
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View picture that shows schematic for the circuit. |
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View block diagram. |
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View picture that shows measuring points. |
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View protocol. |
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View component specifications. |
Icons shown when electrical measurements are needed.
Icon |
Description |
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88890074 Multimeter. |
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Resistance measurement. |
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Voltage measurement. |
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Frequency measurement. |
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Insulation measurement. Note: 88890142 Multimeter. |
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The vehicle must be in Power OFF mode when the measurement takes place. |
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The vehicle must be in Power ON mode when the measurement takes place. |
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Table showing target values |
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Reliable ground point. Click the button to see reliable ground points in the vehicle. |
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Step back to previous view. |
The Step Navigation is found in the bottom left corner. It is a drop-down list with links to the different steps in the Diagnose flow.
You can always use the links to go back and view the inputted information regarding the product symptoms or view the listed DTCs. To do changes, use the Back button.
Note: If a diagnostic procedure is running, the Select Symptom step and View DTC Information step will be locked in the Step Navigation list.
Step |
Description |
1. Select Symptoms |
View, change or add symptoms. If symptoms are changed or added, the navigation button Continue > must be used to go to the next step. |
2. View DTC Information |
View DTC details, Refresh or Clear DTCs. If Refresh or Clear is run, the navigation button Continue > must be used to go to the next step. |
3. Run Diagnostic |
Navigates back to this step if nothing has been changed in the previous steps. |