Operation CHARM: Car repair manuals for everyone.

Menu 2 = Sensors

Menu 2 = Sensors

Check HF sender and ABS speed sensor


1 = HF sender

Each test with attenuated and unattenuated HF sensor
Attenuated means:
Closed pressure-operated switch (tire pressure greater than switching pressure) above the HF sensor
Unattenuated means:
a) Open pressure-operated switch (tire pressure less than switching pressure) above the HF sensor
b) neither of the pressure-operated switches above the HF sensor

- Required display:
OK* for attenuated HF sensor
OK for unattenuated HF sensor

- If display shows: defective, there is a fault in the HF sensor or in the line to the control unit.

Refer to menu 1 (fault memory) to remedy faults for fault code 1 - 4 Menu 1 = Fault Memory


2 = ABS speed sensor

- When the wheel is turned, a bar diagram appears, dependent on speed.

If no signal appears, remedy fault according to information from menu 1 (fault memory) fault code 5 - 8. Menu 1 = Fault Memory