Diagnostic Trouble Code (DTC) Information PHM-E010

Condition 

Fig 1: Identifying Phone Module (PHM)

Courtesy of VOLVO CARS CORPORATION

Central electronic module (CEM) compares the voltage to the Phone module (PHM) with the voltage to the Central electronic module (CEM).

The diagnostic trouble code (DTC) is stored if the control module detects that:

• The voltage differs more than 2 V.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

• Ignition switch position II.
• Battery voltage between 9 - 16 V.

Substitute Value 

• None.

Possible Source 

• Contact resistance or oxidation in the terminals.
• Damaged supply voltage cable.

Fault symptom[s] 

• Cellular phone/Other cellular phone problems
• Volvo On Call/Other Volvo On Call problems
• Cellular phone/Does not work
• Volvo On Call/Does not work
• Text window and warning symbol/Text message