Diagnostic Trouble Code (DTC) Information PHM-000B

Condition 

Fig 1: Identifying Handset Cradle

Courtesy of VOLVO CARS CORPORATION

The diagnostic trouble code (DTC) is stored if the phone module (PHM) registers an open-circuit in the signal from the handset (cradle switch) or that there is a short-circuit to supply voltage in the signal.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on (not key position 3) and when the battery voltage is 9-16 V.

Substitute Value 

• Only hands-free operates.

Possible Source 

• Short-circuit to supply voltage in the cable (cradle signal) between the handset and the phone module (PHM)
• Open-circuit in the cable (cradle signal) between the handset and the phone module (PHM).

Fault symptom[s] 

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