Speed signal, checking

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Speed signal comes from Instrument Cluster Control Module J285.

Remove driver side storage compartment →
- 68 - INTERIOR EQUIPMENT
- 68 - INTERIOR EQUIPMENT for BODY INTERIOR - CABRIOLET
.

Fig 1: Identifying Servotronic Control Module J236

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove Servotronic Control Module J236 , item 2.
If voltage supply, Servotronic Solenoid Valve and speed display on tachometer are OK, check electrical line between Servotronic Control Module J236 contact 4 and Instrument Cluster Control Module J285 → Electrical Wiring Diagrams, Troubleshooting and Component Locations.
If electrical line between contact 4 and Instrument Cluster Control Module J285 is OK, replace Servotronic Control Module J236.