1. Install the manifold gauge.
2. Verify the high-pressure side reading of the manifold gauge.
3. Measure the terminal voltage at PCM terminals 2BB, 2AX and 2AJ
4. Using the graph below, measure and verify the terminal voltage at 2AX.
5. Follow the PCM inspection when measuring the other terminal voltages..
Terminal 2BB: Approx. 5 V (Ignition switch on)
Terminal 2AJ: 1.0 V or less
If the each voltage is not normal, inspect the related wiring harness.
If there is any malfunction, replace the related wiring harness.
If wiring harness is normal, replace the refrigerant pressure sensor.
Using the Audi phone
box
General information
Applies to: vehicles with Audi phone box
Fig. 135 Front center console: Audi phone box with connections
Depending on vehicle equipment, you may be
able to use the following functions with the Audi
phone box:
Make phone calls using the vehicle's exterior
antenna
Charge a mobi ...
Multimedia connections
USB adapter
Fig. 151 Audi Genuine Accessories: USB adapter
You can connect your mobile devices through the
Audi music interface to the MMI using the USB
adapter and charge the battery at the same time.
You can purchase the USB adapter cable from an
authorized Audi dealer or at specialty stores:
...
Key Cylinder Switch
Purpose
The switch turns on/off in conjunction with the front door key cylinder lock/unlock
and the rear body control module (RBCM) detects the key cylinder operation condition
by the change in the voltage.
Function
The key cylinder switch contact point changes in conjuncti ...