Checking GPS Reception

Checking GPS reception

Checking the component
Check that the parcel shelf does not have any large objects on it or that no tinted film containing metal oxides is mounted on the rear windshield. This can affect GPS reception.
Check the cable terminals on the connectors. The cable terminals must not be damaged, pressed back or oxidized.
Check that connector G is correctly connected.
Check the cable between the road traffic information (RTI) control module terminal #G1 and GPS antenna terminal #G1. Check for a short-circuit to supply voltage. Check for a short-circuit to ground. Check for an open-circuit.
Check the cable between the road traffic information (RTI) control module terminal #G2 and GPS antenna terminal #G2. Check for a short-circuit to supply voltage. Check for a short-circuit to ground. Check for an open-circuit.
Remedy as necessary.

Other information:
- To access and replace the GPS antenna, see Antenna, GPS, replacing Service and Repair
- To fault-trace wiring and terminals, see Checking wiring and terminals Checking Wiring And Terminals
- For information about programming and replacing the road traffic information (RTI) control module, see Road traffic information module (RTI), replacing Service and Repair
- To connect the breakout box, see Connecting the breakout box to the Road Traffic Information (RTI) control module Connecting the Breakout Box to the Road Traffic Information (RTI) Control Module
- For information about signals and connectors, see Signal specification, RTI Signal Specification.









Was a fault detected?

Yes - FAULT FOUND

No - Replacing the component

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Replacing the component
Try replacing the GPS antenna.
Leave the car outside in an open place until the road traffic information (RTI) control module has found at least 3 satellites.
This can take up to 15 minutes.

Other information:
- To access and replace the GPS antenna, see Antenna, GPS, replacing Service and Repair.

Does the road traffic information (RTI) system locate at least 3 satellites?

Yes - FAULT FOUND

No - No Fault Found

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