Pinpoint Test A: Poor Satellite Reception
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Move the vehicle to an open area, radio waves from satellites may not be received inside buildings. Correct the vehicle cursor to the current location.
- A1: SYSTEM CHECK FOR DTCS
- Check the system for DTCs which may be logged.
Are any system DTCs logged?
- A2: RETRO - INSTALL INSTALLATIONS CHECK
- Check to see if there are any retro - install installations (anti - theft, radar, etc.)
Are there any retro - install installations?
- Yes : Aftermarket items may cause either electrical or radio frequency interference that can cause satellite reception to deteriorate. Remove the power supply (including backup power supplies) from any aftermarket items installed. If reception returns to normal after disconnection of aftermarket items, carry out the following. Alter the installation position of any aftermarket items. Check satellite reception. GO to A3.
- No : GO to A3.
- A3: SATELLITE RECEPTION CHECKS
- Check the 'ST' column of the navigation diagnostics GPS information screen (PIN code 662) after 10 minutes have passed. There must be more than 4 'P's displayed for accurate positioning. Check the 'HDOP' value, this must be less than 5.
Are there more than 4 'P's displayed and is HDOP less than 5?
- Yes : Satellite reception is normal.
- No : Confirm the GPS antenna is connected to the navigation module. Refer to the appropriate system wiring diagrams and check the integrity of the coaxial cable and connectors from the Navigation Control Module (NCM) to the GPS antenna. Install a new GPS antenna or coaxial cable as required. Re - check satellite reception.
NOTE: Ensure the parking brake is applied, and ignition status is set to Auxiliary or ON.