Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2009 Volvo XC70 BaseFACTORY OEM SERVICE PROCEDURE

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

Courtesy 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

Courtesy of VOLVO CARS CORPORATION

Are the diagnostic trouble code (DTCs) still stored?

YES
Refer to INFORMATION
NO
OKAY: Troubleshooting has been completed.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.