Test Step 4 - Check The (C955) Signal Ground Circuit For An Open

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2014 Volkswagen Routan, 2013 Volkswagen Routan, 2012 Volkswagen Routan, 2011 Volkswagen Routan, and 2010 Volkswagen Routan. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Checking (C955) Signal Ground Circuit For An Open

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Turn the ignition off to the lock position.
Measure the resistance of the (C955) Signal Ground circuit between the A/C Heater Control C2 harness connector and the Rear A/C Heater Control C1 harness connector.

Is the resistance below 1.0 Ohm?

Yes

Go to TEST STEP 6 - CHECK THE HVAC CONTROL MODULES

Repair the (C955) Signal Ground circuit for an open.
Perform the HVAC Verification Test. Refer to HVAC .