B2481

Code

Other B — Body

Convertible Top Up/Down switch Fault

Brand: Other

Type: B — Body

Views: UK: 22 EN: 31 RU: 20

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Page language: EN

Convertible top does not move or responds intermittently to the up/down switch
Switch feels loose, sticky, or has abnormal travel
No audible click from relay when switch is operated
Related warning lamp or message displayed (roof fault or service convertible top)
Switch works only in one direction or only when handled a certain way

Verify battery voltage is within normal range and test again
Visually inspect switch, wiring harness, connectors and for water intrusion or corrosion
Check fuses and relays related to the convertible top circuit
Scan BCM/roof control module for stored codes and freeze frame data
Operate switch while monitoring continuity/voltage at the switch connector
Check grounds for cleanliness and tightness at switch and module

Switch output: typically ignition-switched 12 V when actuated (verify with vehicle-specific info)
Inactive output: 0 V or open circuit
Some systems use a momentary contact to ground or a low-voltage logic signal to BCM
Expect near-battery voltage at feed terminal with key ON; switched terminal should change state when pressed
If equipped, limit/home sensors may use digital on/off signals or PWM — consult manufacturer wiring diagram

Retrieve all related DTCs and freeze-frame data with a scan tool; note conditions when code set.
Visually inspect switch for damage, moisture, and test operation by pressing and feeling for change.
Check associated fuses and relays; replace if blown and retest to see if code returns.
Backprobe the switch connector while operating the switch; verify feed voltage, switched output, and ground continuity.
If switch signals are not correct, measure resistance across switch terminals to verify contacts change state when pressed.
Follow wiring from switch to module; check for continuity, shorts to ground/12V, and connector integrity. Repair any damaged wiring.
Inspect and test roof actuators, limit switches and motor circuits if wiring and switch test OK — a mechanical jam or feedback sensor fault can cause switch-related faults.
If wiring and switch check good, test/replace the switch. If problem persists, consider module input circuit testing or module replacement per manufacturer procedures.
After repair, clear codes and fully cycle the roof through up/down operations to verify repair and ensure no new codes appear.

Switch contacts worn or contaminated preventing proper signal
Damaged wiring between switch and BCM (pinch, chafe, rodent damage)
Connector pins bent, pushed out, or corroded at switch or module
Fuse for convertible top circuit blown due to short
Intermittent ground at switch or module due to corrosion
Limit/home position sensor or feedback switch failure causing module to flag switch fault