Diagnostic trouble code (DTC) information CEM-7A0A

Condition 

Fig 1: Identifying RTI Up Button

Courtesy of VOLVO CARS OF NORTH AMERICA.

The central electronic module (CEM) checks the signal from the up button.

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that the up button has been active for more than 1 minute.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value 

• None.

Possible Source 

• The up button has jammed in the pressed in position
• Damaged up button.

Fault symptom[s] 

• The RTI buttons on the steering wheel do not function
• The navigation buttons on the steering wheel do not function.