Operation CHARM: Car repair manuals for everyone.

Fault Code 20, 21, 22, 23



Fault Code 20, 21, 22, 23

Spirit Level 1

Diagnostic conditions
- Ignition on

Possible cause of fault
- Control unit roll-over protection faulty


Diagnosis/troubleshooting


Work Instruction 1:






DANGER:
Danger of personal injury by remaining in the functional area of the roll-over protection strap.

Danger of personal injury by placing objects in the functional area of the roll-over protection strap.

The roll-over protection straps may be released accidentally or intentionally during the even if the battery has been clamped beforehand.
- Before starting the diagnosis/troubleshooting, open the convertible top completely, dismantle the cover and remove the hardtop from the vehicle if necessary.
- Ensure that body parts are kept away from the functional area of the roll-over protection strap.
- Ensure that objects are kept away from the functional area of the roll-over protection strap.
- During all work and analysis/troubleshooting concerning the roll-over protection system, the roll-over protection must be released beforehand and only run in again when all work is complete.