Land Rover Discovery: Chassis

 Diagnosis and Testing Telematics

The complexities of the electronics involved with the telematics system, of which the GPS antenna and navigation display are parts, and the multiplexed communication network which are connected to it preclude the use of workshop general electrical test equipment. Therefore, reference should be made

 Rear Window Wiper - Operation

When the driver moves the wipers and washers control switch to the rear window wiper position, the CJB detects a LIN bus message and will energize the rear window wiper relay which is integral with the RF Filter. When energized, the rear wiper relay provides a power supply to the rear window wiper