T-SB-0014-15
March 27, 2015
Page 11 of 12
Reception Diagnosis Using Antenna Test Kit
Repair Procedure (Continued)
Repair Procedure
GPS Reception (Continued)
NOTE
• Comparison vehicles are a good resource to determine what is available in the area.
•
If appropriate and within dealer policy, temporarily swapping a component (radio head
unit, extension box, NAV ECU, etc.) between the problem vehicle and a dealer-owned
vehicle is one method to confirm the cause.
Did the GPS reception improve?
• YES — Continue to step 7.
• NO — Refer to applicable Repair Manual for instructions and navigation computer
reception diagnosis.
7. Check antenna cable continuity.
• If GPS antenna cable has less than 1 ohm resistance, replace the GPS antenna.
(Refer to applicable Repair Manual for instructions.)
• If GPS antenna cable resistance is greater than 1 ohm, replace the antenna cable.
(Refer to applicable Repair Manual for instructions.)
Data Communication Module (DCM) / Safety Connect Reception
For conditions where the Safety Connect call center is unable to accurately locate the customer’s
vehicle, follow the steps below.
NOTE
Never swap Data Communication Modules (DCM) between vehicles.
1. Drive the vehicle outside for 5 minutes with an open view to the sky and press the SOS button.
2. Explain to the call center that you are a technician diagnosing a reception issue and ask them to
tell you where the vehicle is located.
Did the call center provide the correct location of the vehicle within 100 meters accuracy?
• YES — Gather detailed information from the customer on when and where the problem
occurs (e.g., indoor/outdoor, certain locations only, certain weather conditions).
• NO — Continue to step 3.
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