DIAGNOSTIC FUNCTIONS
The control modules have a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
DIAGNOSTIC TROUBLE CODES (DTCS)
If the control modules detect a fault, a diagnostic trouble code (DTC) is stored. A fault that was detected during the last operating cycle is defined as permanent. Other faults that are detected are defined as intermittent.
READING AND ERASING DIAGNOSTIC TROUBLE CODES (DTCS)
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault.
If a fault disappears for any reason after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault remains in the control module.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function. Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault.
If for some reason a fault disappears after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault is stored in the control module.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function. Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
DIAGNOSTIC SERVICES
After the software has been downloaded, diagnostic services are run if necessary, for example, programming of codes or initialization of windows.
The control modules have a built-in diagnostic system, Volvo Diagnostics, which continuously monitors internal functions as well as input and output signals. The central locking system is a distributed system which stores diagnostic trouble codes (DTCs) in different control modules depending on where the fault occurred.
A diagnostic trouble code (DTC) is stored if a control module detects a fault in a connected component.
If for some reason a fault disappears after the diagnostic trouble code (DTC) has been permanently stored in a control module, information about the fault remains in the control module.
Central electronic module (CEM)
The central electronic module (CEM) can identify 39 different faults related to the central locking system and is able to store up to 10 diagnostic trouble codes (DTCs) at the same time.
Driver door module (DDM)
The driver door module (DDM) can identify 20 different faults related to the central locking system and is able to store up to 10 diagnostic trouble codes (DTCs) at the same time. The control module also stores diagnostic trouble codes (DTCs) for its corresponding rear door control module. The rear door control module for which the driver door module (DDM) stores diagnostic trouble codes (DTCs).
Passenger door module (PDM)
The passenger door module (PDM) can identify 20 different faults related to the central locking system and is able to store up to 10 diagnostic trouble codes (DTCs) at the same time. The control module also stores diagnostic trouble codes (DTCs) for its corresponding rear door control module. The rear door control module for which the passenger door module (PDM) stores diagnostic trouble codes (DTCs).
Convertible Roof Module (CRM)
The control module can identify 1 fault related to the central locking system.
The control modules have a built-in diagnostic system, Volvo Diagnostics, which continuously monitors internal functions as well as input and output signals. The central locking system is a distributed system which stores diagnostic trouble codes (DTCs) in different control modules depending on where the fault occurred.
A diagnostic trouble code (DTC) is stored if a control module detects a fault in a connected component.
If for some reason a fault disappears after the diagnostic trouble code (DTC) has been permanently stored in a control module, information about the fault remains in the control module.
Central electronic module (CEM)
The central electronic module (CEM) can identify 39 different faults related to the central locking system and is able to store up to 10 diagnostic trouble codes (DTCs) at the same time.
Driver door module (DDM)
The driver door module (DDM) can identify 20 different faults related to the central locking system and is able to store up to 10 diagnostic trouble codes (DTCs) at the same time. The control module also stores diagnostic trouble codes (DTCs) for its corresponding rear door control module. The rear door control module for which the driver door module (DDM) stores diagnostic trouble codes (DTCs).
Passenger door module (PDM)
The passenger door module (PDM) can identify 20 different faults related to the central locking system and is able to store up to 10 diagnostic trouble codes (DTCs) at the same time. The control module also stores diagnostic trouble codes (DTCs) for its corresponding rear door control module. The rear door control module for which the passenger door module (PDM) stores diagnostic trouble codes (DTCs).
Convertible Roof Module (CRM)
The control module can identify 1 fault related to the central locking system.
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. The diagnostic trouble codes (DTCs) are stored in the RAM (random access memory) until the ignition is switched off. This means that if the steering wheel module (SWM) is removed before the key is removed from the ignition or turned to the 0 position, the non-programmed EEPROM diagnostic trouble codes (DTCs) disappear.
A fault which is detected in the most recent operating cycle is defined as permanent. Other faults which are detected are defined as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
READING OFF EXTENDED DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
This function can be used to read parameters, status identifiers and counters stored at the same time as a diagnostic trouble code (DTC). These are called frozen values.
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. A fault which is detected in the most recent operating cycle is defined as permanent. Other faults which are detected are defined as intermittent.
If a fault disappears for any reason after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault remains in the control module.
If a fault is no longer permanent, the diagnostic trouble code (DTC) remains as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
Note. Certain functions are unavailable until the diagnostic trouble codes (DTCs) have been erased.
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
If the control module detects a fault, a diagnostic trouble code is stored. A fault that was detected during the last driving cycle is defined as permanent. Other faults that are detected are defined as intermittent.
READING OUT AND ERASING DIAGNOSTIC TROUBLE CODES
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function. Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
If the control module detects a fault, a diagnostic trouble code is stored. A fault that was detected during the last driving cycle is defined as permanent. Other faults that are detected are defined as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function. Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. The control module can store up to 20 diagnostic trouble codes (DTCs).
Should a fault disappear for any reason after being stored in the control module as a diagnostic trouble code (DTC), the information remains stored in the control module. If a fault is no longer permanent, the diagnostic trouble code (DTC) remains as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
This function can also be used to read off whether the fault is still present (permanent) or whether it has now ceased (intermittent) after the diagnostic trouble code (DTC) has been stored.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
The on-board diagnostic (OBD) system for the supplemental restraint system module (SRS) continually diagnoses the function of supplemental restraint system components and stores any diagnostic trouble codes (DTCs). The diagnostic trouble codes (DTCs) can then be read off. Information is presented in the same way as with other diagnostic systems.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. The control module can store up to 20 diagnostic trouble codes (DTCs).
Should a fault disappear for any reason after being stored in the control module as a diagnostic trouble code (DTC), the information remains stored in the control module. If a fault is no longer permanent, the diagnostic trouble code (DTC) remains as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
This function can also be used to read off whether the fault is still present (permanent) or whether it has now ceased (intermittent) after the diagnostic trouble code (DTC) has been stored.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault.
If for some reason a fault disappears after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault is stored in the control module.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
Note. Certain functions are unavailable until the diagnostic trouble codes (DTCs) have been erased.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. The control module can store up to 8 diagnostic trouble codes (DTCs).
Diagnostic trouble codes (DTCs) for different types of short-circuit are only stored when there is no tow hitch connector connected to the socket. This is so that diagnostic trouble codes (DTCs) are not stored in the event of a fault in the trailer's cable harness or its connectors.
Should a fault disappear for any reason after being stored in the control module as a diagnostic trouble code (DTC), the information remains stored in the control module. If a fault is no longer permanent, the diagnostic trouble code (DTC) remains as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
This function can also be used to read off whether the fault is still present (permanent) or whether it has now ceased (intermittent) after the diagnostic trouble code (DTC) has been stored.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. If a fault disappears for any reason after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault remains stored in the control module.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
ACTIVATING TEST MODE
When this function is activated, the sensitivity of the software to criteria for storing diagnostic trouble codes is reduced. This helps the mechanic when testing the function of the transmission.