Diagnostic Trouble Code (DTC) Information ICM-1F21

Condition 

Fig 1: Identifying Left-Hand Keypad

Courtesy of VOLVO CARS CORPORATION

The infotainment control module (ICM) checks the circuit for the CD, AM/FM buttons |<< and >|.

Diagnostic trouble code (DTC) ICM-1F21 is stored if the control module registers that the signal in the keypad circuit is too high or too low.

Substitute Value 

• None.

Possible Source 

• Short-circuit to ground or an open-circuit in the left-hand keypad unit
• Short-circuit to ground or an open-circuit in the cable for the keypad unit.

Fault symptom[s] 

• Buttons on the keypad unit are not working.