Sound Signal Circuit between Radio Receiver and Multi-media Interface ECU: Procedure
- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MULTI-MEDIA INTERFACE ECU)
- Disconnect the radio receiver assembly and multi-media interface ECU connectors.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition E77-2 (URO+) - E79-2 (CDR+) Always Below 1 Ω E77-3 (URO-) - E79-3 (CDR-) Always Below 1 Ω E77-4 (ULO+) - E79-4 (CDL+) Always Below 1 Ω E77-5 (ULO-) - E79-5 (CDL-) Always Below 1 Ω E77-1 (USD1) - Body ground Always 10 kΩ or higher E77-2 (URO+) - Body ground Always 10 kΩ or higher E77-3 (URO-) - Body ground Always 10 kΩ or higher E77-4 (ULO+) - Body ground Always 10 kΩ or higher E77-5 (ULO-) - 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