Connection
Input digital speedometer signal / SDVC
Switch input reversing signal (reversing light plus)
Switch input telephone mute function
+ 12 V permanent positive; terminal 30
Switch output for electronic antenna /relay motor antenna
Switch input pilot light
+12 V ignition positive; terminal 15 (without switch-off on starting engine)
Battery negative; terminal 31
Only connect electrical signals to suitable connecting points in the vehicle.

INSTALLATION INSTRUCTIONS

Connection overview, ISO chamber A, Fig. 2:

Pin

A1

A2

A3

A4

A5

A6

A7

A8

A

A If separate connection is made directly to the battery, protect the positive lead with a 10 A fuse close to the battery (max. distance 10 to 15 cm).

■Digital speedometer signal (A1):

A digital speedometer is required for correct functioning of the navigation system. Analogue speedometer signals are not supported by the system.

☞

A

Connect pin A1 to the vehicle speedometer signal.

Never collect the speedometer signal directly from the ABS control or the CAN bus.

Digital speedometer signal requirements:Frequency: 0 Hz - 4 kHz square-wave signal (no inductive sensor)Low - level: < 1 VHigh - level: 4 V - 24 V

Notes: Many vehicles are equipped with a digital speedometer signal on one of the radio connectors. Notes on vehicle-specific information regarding the speedometer signal and the above-mentioned accessories can be obtained from your installation service or from our Customer Help Desk.

Operation of the navigation system is possible without a speedometer signal. However, in the absence of a speedometer signal the following functional restrictions may arise:

–Inaccurate navigation–Inaccurate or invalid information in trip computer–Limitations with regard to SDVC (speed-dependent volume control)

If your vehicle is not equipped to produce a digital speedometer signal, an optional speed sensor can be installed. This is available as an accessory from your installation service.

Mechanical speedometer

A digital speedometer signal can be obtained through the installation of a VDO X39-397-106-191 speed sensor in the speedometer drive shaft.

CAN bus

In many vehicles, speed, reversing and light information can be read out from the vehicle’s CAN bus and converted into the appropriate signals for the navigation system using an adapter.

Universal installation

If none of the above-mentioned options are possible, the wheel speed can be converted into a digital speedometer signal by means of an MA 3400/00 magnetic field sensor and magnetisation of a tyre.

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