Sound Signal Circuit between Stereo Component Tuner Assembly and Multi-media Interface ECU: Procedure
- CHECK HARNESS AND CONNECTOR (MULTI-MEDIA INTERFACE ECU - STEREO COMPONENT TUNER)
- Disconnect the multi-media interface ECU connector.
- Disconnect the stereo component tuner assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F29-8 (URI+) - F30-2 (FRO+) Always Below 1 Ω F29-16 (URI-) - F30-3 (FRO-) Always Below 1 Ω F29-7 (ULI+) - F30-4 (FLO+) Always Below 1 Ω F29-15 (ULI-) - F30-5 (FLO-) Always Below 1 Ω F29-8 (URI+) - Body ground Always 10 kΩ or higher F29-16 (URI-) - Body ground Always 10 kΩ or higher F29-7 (ULI+) - Body ground Always 10 kΩ or higher F29-15 (ULI-) - Body ground Always 10 kΩ or higher F29-6 (USD2) - Body ground Always 10 kΩ or higher TEXT IN ILLUSTRATION*1 Front view of wire harness connector
(to Multi-media Interface ECU)*2 Front view of wire harness connector
(to Stereo Component Tuner Assembly)
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- INSPECT STEREO COMPONENT TUNER ASSEMBLY
- Reconnect the stereo component tuner assembly connector.
- Check the waveform according to the conditions in the table below.
Standard
Tester Connection Condition Specified Condition F30-2 (FRO+) - Body ground Voice sound being produced A waveform synchronized with sound is output F30-3 (FRO-) - Body ground Voice sound being produced A waveform synchronized with sound is output F30-4 (FLO+) - Body ground Voice sound being produced A waveform synchronized with sound is output F30-5 (FLO-) - Body ground Voice sound being produced A waveform synchronized with sound is output TEXT IN ILLUSTRATION*1 Component with harness connected
(Stereo Component Tuner Assembly)
NG → See step 4
OK → See step 3
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE
- REPLACE STEREO COMPONENT TUNER ASSEMBLY. Refer to REMOVAL