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Home >> Volvo >> 2009 >> XC70 Base >> Repair and Diagnosis >> Electrical >> Gauges >> Phone Module (PHM) And Subwoofer (Sub) Module Diagnostic Trouble Codes >> PHM-U201A51 Control Module Main Calibration Data. System Programming Failures. Not Programmed (2009-12) >> Fault-Tracing >> Verification
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PHM-U201A51 Control Module Main Calibration Data. System Programming Failures. Not Programmed (2009-12): Fault-Tracing: Verification

Fig 1: Checking Traffic Load On CAN Cables
GLL101053Courtesy of VOLVO CARS CORPORATION

In order that the diagnostic trouble code (DTC) can be reread, the Phone module (PHM) must be restarted. Click the VCT2000 symbol to restart the control module and to erase and read out DTCs again.

NOTE: After erasing DTCs there is a delay to ensure that the diagnostics for the Phone module (PHM) have been carried out.

Check that the current DTC has disappeared or changed status from permanent to intermittent fault.

Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
GLL100564Courtesy of VOLVO CARS CORPORATION

Are the diagnostic trouble code (DTCs) still stored?