Performing Repairs
Before starting repair work, batteries must be disconnected! Refer to [For engine(s) CNNA, CCTA, CBFA] Removal and Installation .
Use a valid wiring diagram.
To remove and install trims, observe the body interior repair information or body exterior repair information.
Observe manufacturers operating and installation instructions for cellular telephones, two-way radios and antennas.
Secure the wiring harnesses to the cable ties. Wrap connectors with foam to avoid rattling noises.
Transmitted Output, Possible Installation Locations
Volkswagen permits the installation and operation of radio units, as long as the transmitted power on antenna base, listed in table, is not exceeded. For prescribed antenna locations refer to.
The limits set forth in VDE 0848 Part 2 (maximum permissible field intensity to protect persons) must be maintained even, if necessary, through reduction of transmission output.
Voltage Supply
When retrofitting a transmitter/receiver unit in the vehicle, the battery is used to connect the positive and negative wire.
The wiring harness must be manufactured additionally:
- Voltage supply positive via red wire, 2.5 mm2 cross section.
- Voltage supply negative via brown wire, 2.5 mm2 cross section.
The positive wire must have a fuse which must be located very close to the battery. Therefore a fuse panel must be secured next to the battery. Both wires must be encased in an insulating hose.
Make suitable connections at the battery end.
Proceed on unit side according to operating instructions.
The additional wiring harness must be routed separately from vehicle wiring, the distance apart must be at least 10 cm.
For some telephone systems and radio communication units an additional terminal 15 (ignition) is necessary. Then, a black wire connection of 1.5 mm2 cross section must be connected from transmitter/receiver unit to terminal 15a.
When installing, make sure wiring connections are not routed parallel to standard wiring.
Antenna and Wiring
A shielded wire must be used between transmitter/receiver unit and antenna. Shielding must be grounded to the unit and the antenna.
At the same time ensure correct and continuous ground connection of antenna base wire to vehicle body.
The transmitting system must only be used when shielded to avoid interference in antenna wiring. To ensure the system it is tuned and operating correctly it is recommended that an output/performance check is carried out.
Other Auxiliary Installations
The installation of further electronic equipment like business equipment (such as TV, FAX) or household equipment (such as electrical cool box) is only permitted, if these appliances are marked with a CE or e-sign (Europe only).
Voltage supply is performed via a separate wiring harness and secured by a fuse.
Repairing Antenna Wires
All instructions and information can be found in [For engine(s) CNNA, CCTA, CBFA] General Information .