Diagnostic Trouble Code (DTC) Information PHM-B116915

Condition 

Fig 1: Identifying Phone Module (PHM)

Courtesy of VOLVO CARS CORPORATION

The Phone module (PHM) checks the signal from the handset, cradle switch.

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

• The system voltage is greater than 4.5 V.

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

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

Substitute Value 

• Only hands-free operates.

Possible Source 

• The cable for the cradle signal, between the handset and the control module, has a short-circuit to supply voltage or open-circuit.

Fault symptom[s] 

• The handset does not function.
• Message in the text display (applies only to phone modules (PHM) with Volvo On Call).