Test Step 7 - Check The (C254) Rear Blend Signal 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 (C254) Rear Blend Signal Circuit For An Open

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Measure the resistance of the (C254) Rear Blend Signal circuit between 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 8 - CHECK THE HVAC CONTROL MODULES

Repair the (C254) Rear Blend Signal circuit for an open or high resistance.
Perform the HVAC Verification Test. Refer to HVAC .