Volvo Workshop Manuals
V50 L5-2.4L VIN 39 B5244S7 (2005)
Relays and Modules > Relays and Modules - Lighting and Horns > Trailer Lighting Module > Component Information > Description and Operation > Function > Page 1143
Trailer Lighting Module: Description and Operation
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output
If a fault arises in the tow hitch system the driver is warned via the driver information module (DIM) when the information lamp lights and an alert
Diagnostic trouble codes (DTCs)
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).
Reading and erasing diagnostic trouble codes (DTCs)
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Reading off the parameters
Data can be read off from the trailer module (TRM) using this function.
Reads off the level of the power supply to the control module.
Reads out the status of the stop lamp signal from the vehicle's right tail lamp.
Reads out the status of the output signals to the cable harness for the tow hitch.
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