Faulty Signal: Verification

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

HINT: After carrying out the repair, check that the fault has been remedied.

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Connecting Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off.
Reinstall connectors, components etc.
Ignition on.
Start the blower fan or let the engine idle.
Read off the damper motor position sensor.
Activate damper motor by slowly turning the passenger side temperature control between minimum and maximum heat settings.
Check that position sensor values change when the temperature control is turned. If value changes this indicates that damper motor is OK.

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

Does the position sensor value change?

YES
VERIFIED: Troubleshooting has been completed.
NO
Refer to Information