Inspection Procedure

Check mark display. (At place with fine view, is GPS mark displayed or not?)
1. NO: Go to step 7 .
2. YES: Go to next step.
Does trouble occur in specific area or not?
1. YES: Normal. (If vehicle is positioned in place where it is difficult to be identified, current vehicle position may be incorrectly displayed.)
2. NO: Go to next step.
Setting check (Color of the automatic calibration button on the calibration screen).
1. OK: Normal.
2. NG: Go to next step.
Service check mode. (Is "58-43" output in unit check mode of navigation ECU?) See PRE-CHECK .
1. YES: Troubleshoot for each diagnosis.
2. NO: Go to next step.
Navigation check mode. (Vehicle signal check mode: SPD) See PRE-CHECK .
1. NG: Replace or repair speed sensor wire harness.
2. OK: Go to next step.
Recurrence test (Confirm phenomenon) (Correct current position and drive vehicle for a while with GPS mark displayed.)
1. OK: Normal.
2. NG: Replace navigation ECU.
Check connection of navigation antenna. (Bite or sharp bend)
1. NG: Connect navigation antenna properly.
2. OK: Go to next step.
Check optional components. (Does GPS mark appear if options such as theft deterrent system is removed?)
1. YES: Remove them or change position of components.
  HINT:
  
  Some options receive radio signals. This may affect GPS reception.
2. NO: Go to next step.
Is there anything such as a film stuck to window or any metal object on instrument panel?
1. YES: Reception may be affected by a screen such as a film.
2. NO: Go to next step.
Service check mode. (Is "58-40, 41" is output in unit check mode of navigation ECU?) See PRE-CHECK .
1. YES: Troubleshoot for each diagnosis.
2. NO: Replace navigation antenna.
HINT:

If the trouble still occurs, replace the navigation ECU.