Diagnostic Trouble Code (DTC) Information PHM-000A: Notes
Condition
The Phone module (PHM) checks the voltage supply to the spare microphone.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- The voltage of the spare microphone is less than 0.025 V.
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 spare microphone has a short-circuit to ground or an open circuit.
Fault symptom[s]
- Cellular phone/Other cellular phone problems
- Volvo On Call/Other Volvo On Call problems
- Text window and warning symbol/Text message