VOLVO
ICM-1F21 - Left-hand keypad circuit 1. Signal too high / too low
System
Infotainment Control Module (ICM)
Volvo models this fault code applies to
Applies to the following models:
1 modelXC90 (2003–)
Show models by year and engine (1)
What does this fault code mean?
The infotainment control module (ICM) reads the signal circuit for the CD, AM/FM, << and >> buttons on the left-hand keypad. The fault code is set when the signal is too high or too low, and the buttons may then stop working.
Possible causes
- Short circuit to ground or open circuit in the left-hand keypad
- Short circuit to ground or open circuit in the wire to the keypad
What you can do
- 1Read the code, clear it and press the CD, AM/FM, << and >> buttons to see whether they respond
- 2Look over the plugs linking the left-hand keypad to the infotainment control module for contact resistance, oxidation or play, and for damage
- 3Use a multimeter to check that the wire to the keypad has no contact with ground and is not broken
- 4If no fault is found, have a workshop try a new keypad
Symptoms you may notice1
- The buttons on the left-hand keypad do not work
General guidance for car owners. Diagnosis on the car can point to a different cause.