Diagnostic Trouble Code (DTC) Information PHM-B1A5615

Condition

Fig 1: Identifying Antenna

Courtesy of VOLVO CARS CORPORATION

The Phone module (PHM) checks the signal voltage from the external GPS antenna.

The diagnostic trouble code is generated if the control module detects:

Open-circuit on the cable for the telephone antenna signal from the antenna to the Phone module (PHM).

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

Ignition position 0, I and II.
Battery voltage between 9 - 16 V.

NOTE:

The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Substitute Value

None.

Possible Source

The lead for the telephone aerial signal, between the external GPS-antenna and Phone module (PHM) has an open circuit.
The lead for the telephone aerial signal, between the external GPS-antenna and Phone module (PHM) is short-circuited to voltage.
Contact resistance, oxidation or loose connections in the connectors.

Fault symptom[s]

Cellular phone/Poor reception/coverage
Cellular phone/Other cellular phone problems
Volvo On Call/Other Volvo On Call problems
Text window and warning symbol/Text message