Symptom Related Diagnostic Procedures

Checking the Four-C (Continuously Controlled Chassis Concept) keypad unit

Checking the keypad unit




- Ignition on
- Check that the function of the keypad unit by reading off the voltage when pressing in the buttons.
When pressing the "COMFORT" button, voltage should be 0.5 V-2.4 V.
When pressing the "SPORT" button, voltage should be 2.4 V-3.5 V.
When pressing the "ADVANCED" button, voltage should be 3.5 V-4.2 V.
Voltage should be 4.2 V-4.8 V when the buttons are unaffected.

Other information:
- Connecting the breakout box Connecting the Breakout Box, Suspension Module (SUM)
- Signal specification Signal Specification, Suspension Module (SUM)
- Checking wiring and terminals Checking Wiring And Terminals
Remedy as necessary.






Continue - Fault Found

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