Your Volvo Ycc engine control system detects a problem, the computer stores the diagnostic trouble
code U3523 in its memory.
To figure out what is wrong with your vehicle you must first extract the U3523 DTC For Volvo Ycc.
To solve U3523 Volvo Ycc problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs
U3523 Volvo Ycc DTC Meaning
Network Code - Problem is climate control system, lighting, airbags, etc.
SAE - Generic
Auxiliary Emission Controls
Cruise Control Servo Indicates Low
TFP Valve Position Switch-Drive Without Drive Ratio
The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. U3523 Volvo Ycc code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired.