Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU: Procedure
- CHECK HARNESS AND CONNECTOR
- Disconnect the display and navigation module display connector and the multi-media interface ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition K104-1 (AGND) - U50-1 (USD1) Always Below 1 Ω K104-7 (VA-) - U50-4 (UGD1) Always Below 1 Ω K104-3 (VAR+) - U50-2 (URO+) Always Below 1 Ω K104-4 (VAL+) - U50-3 (ULO+) Always Below 1 Ω K104-1 (AGND) - Body ground Always 10 kΩ or higher K104-7 (VA-) - Body ground Always 10 kΩ or higher K104-3 (VAR+) - Body ground Always 10 kΩ or higher K104-4 (VAL+) - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 2
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE