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Checking the function

Fig 1: Engine Start Verification

GLL101037

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector(s) Reinstallation

GLL101069

Courtesy of VOLVO CARS OF NORTH AMERICA.

Start the engine and allow it to idle.
Read off the transmission input speed.
Read off the transmission input speed.

If the transmission input speed updates correctly it means that the fault was present previously but is not active now. There is an intermittent fault.

If the transmission input speed does not update correctly it means that the fault is permanent.

Fig 3: Identifying VCT2000 Diagnostic Tool
Courtesy of VOLVO CARS OF NORTH AMERICA.

Continue
Refer to Checking wiring and sensors