VOLVO
ICM-1F23 - Left-hand keypad circuit 3. 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) monitors the signal circuit for buttons 2, 5, 8 and 0 on the left-hand keypad. The fault code is set when the signal is too high or too low, and those buttons may stop responding.
Possible causes
- Short circuit to ground or open circuit in the left-hand keypad
- Short circuit to ground or open circuit in the wire running to the keypad
What you can do
- 1Press buttons 2, 5, 8 and 0 and see whether they produce a response
- 2Read the code, clear it and check whether it returns
- 3Look over the plugs for the left-hand keypad for contact resistance, oxidation or play
- 4Look for visible damage on the wire to the keypad; use a multimeter to check that it has no break or contact with ground, otherwise 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.