INSPECT NAVIGATION RECEIVER ASSEMBLY
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - MAP LIGHT)
REPLACE TELEPHONE MICROPHONE WITH ANOTHER AND CHECK
NAVIGATION SYSTEM (for DVD) - Microphone Circuit between Microphone and Navigation Receiver Assembly |
DESCRIPTION
This circuit sends a microphone signal from the telephone microphone assembly to the navigation receiver assembly.It also supplies power from the navigation receiver assembly to the telephone microphone assembly.
WIRING DIAGRAM


INSPECTION PROCEDURE
1.INSPECT NAVIGATION RECEIVER ASSEMBLY |
for 3ZR-FAE:
Disconnect the E106 navigation receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Switch Condition Specified Condition 13 (MIN-) - Body ground Always Below 1 Ω
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition 5 (MACC) - Body ground Ignition switch ACC 4.75 to 5.25 V
except 3ZR-FAE:
Disconnect the E54 navigation receiver assembly connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition 17 (MACC) - Body ground Ignition switch ACC 4.75 to 5.25 V
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OK | |
2.CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - MAP LIGHT) |
for 3ZR-FAE:
Disconnect the E106 navigation receiver assembly connector.
Disconnect the R8 map light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E106-5 (MACC) - R8-12 (ACC) Always Below 1 Ω E106-4 (MIN+) - R8-11 (MI1+) Always Below 1 Ω E106-13 (MIN-) - R8-10 (MIC-) Always Below 1 Ω E106-5 (MACC) - Body ground Always 10 kΩ or higher E106-4 (MIN+) - Body ground Always 10 kΩ or higher E106-13 (MIN-) - Body ground Always 10 kΩ or higher E106-3 (SNS2) - Body ground Always Below 1 Ω
except 3ZR-FAE:
Disconnect the E54 navigation receiver assembly connector.
Disconnect the R8 map light connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E54-17 (MACC) - R8-12 (ACC) Always Below 1 Ω E54-19 (MIC+) - R8-11 (MI1+) Always Below 1 Ω E54-20 (MIC-) - R8-10 (MIC-) Always Below 1 Ω E54-17 (MACC) - Body ground Always 10 kΩ or higher E54-19 (MIC+) - Body ground Always 10 kΩ or higher E54-20 (MIC-) - Body ground Always 10 kΩ or higher
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OK | |
3.REPLACE TELEPHONE MICROPHONE WITH ANOTHER AND CHECK |
Replace the telephone microphone with a new or normally functioning one (RAV4_ACA30 RM0000021PU001X.html).
Check if the same problem occurs again.
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OK | ||
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