Display Signal Circuit between Multi-display and Radio Receiver: Procedure
- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - MULTI-DISPLAY)
- Disconnect the multi-display connector and radio receiver connector.
- Measure the resistance according to the value(s) in the table below.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard Resistance
Tester Connection Condition Specified Condition J62-2 (GND) - J52-4 (SGD1) Always Below 1 Ω J62-1 (NTSC) - J52-1 (NTSC) Always Below 1 Ω J62-3 (SLD) - J52-5 (SGND) Always Below 1 Ω J62-1 (NTSC) - Body ground Always 10 kΩ or higher J62-2 (GND) - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- INSPECT RADIO RECEIVER (OUTPUT SIGNAL)
- Reconnect the radio receiver connector.
- Measure the waveform according to the table below.
OK
Tester Connection Condition Specified Condition J52-1 (NTSC) - Body ground DVD display is ON A waveform synchronized with display signals is output HINT:
The waveform pattern may differ from that shown in the illustration due to differences in oscilloscope settings. A normal radio receiver operating condition can be determined if any waveform is output.
Oscilloscope wave
Terminal: J52-1 (NTSC) - Body ground
Setting: 200 mV/DIV. 10 μs/DIV.
Condition: DVD display is on.
NG → See step 4
OK → See step 3
- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE
- REPLACE RADIO RECEIVER. Refer to REMOVAL