Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Radio

Courtesy of VOLVO CARS OF NORTH AMERICA.

Diagnostic trouble code (DTC) CI-1A is stored in the combined instrument panel control module if the cable for the speed signal (1/4) is high at the same time as the speed exceeds 5 km/h for at least 10 seconds.

Substitute Value 

None.

Possible Source 

• Vehicle speed signal (1/4) cable is short-circuited to supply voltage.

Fault symptom[s] 

• Speed related radio volume control does not function.