DESCRIPTION
The navigation receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines.
Using this circuit, the navigation receiver assembly sends power to the telephone microphone assembly and the telephone microphone assembly sends microphone signals to the navigation receiver assembly.
WIRING DIAGRAM
PROCEDURE
1. |
CHECK MICROPHONE |
(a) Enter the "Microphone Check" screen. Refer to Check Microphone in
Operation Check (See page |
|
(b) When a voice is input into the microphone, check that the microphone input level meter changes according to the input voice.
OK:
Check result is normal.
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY) |
(a) Disconnect the N25 navigation receiver assembly connector.
(b) Disconnect the T26 telephone microphone assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
N25-4 (MACC) - T26-1 (MACC) |
Always |
Below 1 Ω |
N25-5 (MIN+) - T26-2 (MIC+) |
Always |
Below 1 Ω |
N25-19 (MIN-) - T26-4 (MIC-) |
Always |
Below 1 Ω |
N25-6 (SNS2) - T26-3 (SNS2) |
Always |
Below 1 Ω |
N25-4 (MACC) - Body ground |
Always |
10 kΩ or higher |
N25-5 (MIN+) - Body ground |
Always |
10 kΩ or higher |
N25-19 (MIN-) - Body ground |
Always |
10 kΩ or higher |
N25-18 (SGND) - Body ground |
Always |
10 kΩ or higher |
N25-6 (SNS2) - Body ground |
Always |
10 kΩ or higher |
(d) Reconnect the navigation receiver assembly connector.
(e) Reconnect the telephone microphone assembly connector.
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
INSPECT NAVIGATION RECEIVER ASSEMBLY |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
N25-19 (MIN-) - Body ground |
Always |
Below 1 Ω |
N25-18 (SGND) - Body ground |
Always |
Below 1 Ω |
NG | ![]() |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
|
4. |
INSPECT TELEPHONE MICROPHONE ASSEMBLY |
(a) Remove the telephone microphone assembly (See page
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
3 (SNS2) - 4 (MIC-) |
Always |
Below 1 Ω |
(c) Install the telephone microphone assembly.
NG | ![]() |
REPLACE TELEPHONE MICROPHONE ASSEMBLY |
|
5. |
INSPECT TELEPHONE MICROPHONE ASSEMBLY |
(a) Turn the ignition switch to ACC. |
|
(b) Connect an oscilloscope to terminals 2 (MIC+) and 4 (MIC-) of the telephone microphone assembly connector.
(c) Check the waveform of the telephone microphone assembly using the oscilloscope.
Result
Result |
Proceed to |
---|---|
A waveform synchronized with the voice input to the telephone microphone assembly is output |
A |
A waveform synchronized with the voice input to the telephone microphone assembly is not output |
B |
A | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
B | ![]() |
REPLACE TELEPHONE MICROPHONE ASSEMBLY |
Registration
REGISTRATION
PROCEDURE
1. BEFORE REGISTRATION
NOTICE:
The transmitter ID is written on the tire pressure warning valve and transmitter.
It is not possible to read the transmitter ID after installing the tire onto the
wheel. Therefore, make a note of the transmitter ID before installing the t ...
Power Outlet Socket(for Front Side)
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. REMOVE INSTRUMENT PANEL LOWER CENTER FINISH PANEL
(See page )
2. REMOVE NO. 1 POWER OUTLET SOCKET ASSEMBLY
(a) Using a screwdriver with its tip wrapped in protective tape, disengage
the 2 claws to remove t ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
If a problem occurs in certain locations or at certain times of day,
check for the possibility of wave interference.
When the electrical key transmitter sub-assembly is brought near the
electrical key and TPMS receiver assembly (RF band), front outs ...