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Inspection Procedure

  1. Check the navigation ECU. Further diagnosis information is not available. If the results are OK, go to the next step. If the results are not good, replace the navigation ECU.
  2. Check the wiring harness and connector between the navigation ECU and passenger side junction block (body No. 3) ECU. See WIRING DIAGRAMS . If the results are OK, proceed to the next circuit inspection of the problem symptom. See PROBLEM SYMPTOM INDEX (BODY NO. 3 CONTROL SYSTEM)  table. If the results are not good, repair or replace the wiring harness or connector.
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