Diagnostic Trouble Code (DTC) Information IAM-B125219

Condition

The Integrated Audio Module (IAM) checks the USB device.

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

The USB accessory draws too much current (>1.7 A).

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

Ignition switch position II.

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.

Fig 1: Identifying USB Port Connector

Courtesy of VOLVO CARS CORPORATION

Substitute Value

None.

Possible Source

Incompatible USB accessory
Damaged integrated audio module (IAM).
Short-circuit to ground.

Fault symptom[s]

USB unit/Does not work