Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU: Procedure
- CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - MULTI-MEDIA INTERFACE ECU)
- Disconnect the F51 display and navigation module display connector.
- Disconnect the L50 multi-media interface ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F51-1 (AGND) - L50-1 (USD1) Always Below 1 Ω F51-3 (VAR+) - L50-2 (URO+) Always Below 1 Ω F51-4 (VAL+) - L50-3 (ULO+) Always Below 1 Ω F51-7 (VA-) - L50-4 (UGD1) Always Below 1 Ω F51-1 (AGND) - Body ground Always 10 kΩ or higher F51-3 (VAR+) - Body ground Always 10 kΩ or higher F51-4 (VAL+) - Body ground Always 10 kΩ or higher F51-7 (VA-) - 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