Inspection Procedure
- CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION ASSEMBLY - MULTI-DISPLAY CONTROLLER)
- Disconnect the L62 navigation connector.
- Disconnect the R32 controller connector.
- Measure the resistance according to the value (s) in the table below.
Standard resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition L62-3 (FL+) - R32-3 (L5+) Always Below 1 Ω L62-4 (FL-) - R32-4 (L5-) Always Below 1 Ω L62-1 (FR+) - R32-1 (R5+) Always Below 1 Ω L62-2 (FR-) - R32-2 (R5-) Always Below 1 Ω L62-5 (SLD1) - R32-5 (SLD5) Always Below 1 Ω L62-3 (FL+) - Body ground Always 10 kΩ or higher L62-4 (FL-) - Body ground Always 10 kΩ or higher L62-1 (FR+) - Body ground Always 10 kΩ or higher L62-2 (FR-) - Body ground Always 10 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to Next Step
- CHECK DISPLAY AND NAVIGATION ASSEMBLY
- Reconnect the L62 navigation connector.
- Using an oscilloscope, check the signal waveform between each terminal and body ground according to the conditions, as shown in the chart below.
Signal waveform
SIGNAL WAVEFORM REFERENCETester Connection Condition Specified Condition R32-3 (L5+) - Body ground Audio sound is being produced A waveform synchronized with sound is output R32-4 (L5-) - Body ground Audio sound is being produced A waveform synchronized with sound is output R32-1 (R5+) - Body ground Audio sound is being produced A waveform synchronized with sound is output R32-2 (R5-) - Body ground Audio sound is being produced A waveform synchronized with sound is output NG: REPLACE DISPLAY AND NAVIGATION ASSEMBLY (See REMOVAL )
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )