DESCRIPTION The radio and
display receiver assembly, roof console box sub-assembly and telephone
microphone assembly are connected to each other using the microphone
connection detection signal lines. Using this
circuit, the DCM (telematics transceiver) sends power to the roof
console box sub-assembly and telephone microphone assembly, and the roof
console box sub-assembly and telephone microphone assembly sends
microphone signals to the radio and display receiver assembly via the
DCM (telematics transceiver). WIRING DIAGRAM w/ Sliding Roof
 w/o Sliding Roof
 CAUTION / NOTICE / HINT
NOTICE:
- Depending on the parts that are replaced during vehicle inspection or
maintenance, performing initialization, registration or calibration may
be needed. Refer to Precaution for Audio and Visual System.
Click here 
- When replacing the radio and display receiver assembly, always replace
it with a new one. If a radio and display receiver assembly which was
installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly may not operate normally.
- Before replacing the DCM (telematics transceiver), refer to Registration.
Click here
PROCEDURE (a) Choose the model to be inspected.
|
Result | Proceed to | |
w/ Sliding Roof | A | |
w/o Sliding Roof | B |
| B |
 | GO TO STEP 13 |
|
A |
 | |
| 2. |
CHECK MICROPHONE (OPERATION CHECK) |
| (a) Enter the "Microphone Check" screen. Refer to Check Microphone in Operation Check.
Click here | |
(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.
| NG |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
OK | |
| |
| 3. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ROOF CONSOLE BOX SUB-ASSEMBLY) |
(a) Disconnect the G2 radio and display receiver assembly connector. (b) Disconnect the O10 roof console box sub-assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G2-25 (SNS2) - O10-6 (SNS2) |
Always | Below 1 Ω | |
G2-25 (SNS2) or O10-6 (SNS2) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 4. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) |
(a) Disconnect the G2 radio and display receiver assembly connector. (b) Disconnect the G9 DCM (telematics transceiver) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G2-21 (MIN+) - G9-18 (MCO+) |
Always | Below 1 Ω | |
G2-22 (MIN-) - G9-19 (MCO-) |
Always | Below 1 Ω | |
G2-21 (MIN+) or G9-18 (MCO+) - Body ground |
Always | 10 kΩ or higher | |
G2-22 (MIN-) or G9-19 (MCO-) - Body ground |
Always | 10 kΩ or higher | |
G2-24 (SGND) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 5. |
CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX SUB-ASSEMBLY) |
(a) Disconnect the G9 DCM (telematics transceiver) connector. (b) Disconnect the O10 roof console box sub-assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G9-33 (MCVD) - O10-9 (MACC) |
Always | Below 1 Ω | |
G9-34 (MCI+) - O10-8 (MCO+) |
Always | Below 1 Ω | |
G9-35 (MCI-) - O10-7 (MCO-) |
Always | Below 1 Ω | |
G9-33 (MCVD) or O10-9 (MACC) - Body ground |
Always | 10 kΩ or higher | |
G9-34 (MCI+) or O10-8 (MCO+) - Body ground |
Always | 10 kΩ or higher | |
G9-35 (MCI-) or O10-7 (MCO-) - Body ground |
Always | 10 kΩ or higher | |
G9-32 (SGND) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 6. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY |
(a) Disconnect the G9 DCM (telematics transceiver) connector.
| (b) Connect the G2 radio and display receiver assembly connector. |
 |
|
*a | Component with harness connected (Radio and Display Receiver Assembly) | | |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G2-24 (SGND) - Body ground |
Always | Below 1 Ω | |
G2-22 (MIN-) - Body ground |
Always | Below 1 Ω |
| NG |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
OK | |
| |
| 7. |
INSPECT DCM (TELEMATICS TRANSCEIVER) | (a) Connect the G9 DCM (telematics transceiver) connector.
| (b) Measure the voltage according to the value(s) in the table below.
Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
G9-33 (MCVD) - Body ground |
Power switch on (ACC) |
4 to 6 V | |
 |
|
*a | Component with harness connected (DCM (Telematics Transceiver)) | | |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G9-35 (MCI-) - Body ground |
Always | Below 1 Ω | |
G9-32 (SGND) - Body ground |
Always | Below 1 Ω |
| NG |
| REPLACE DCM (TELEMATICS TRANSCEIVER) |
|
OK | |
| |
| 8. |
INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY |
(a) Remove the roof console box sub-assembly. Click here
(b) Connect the B telephone microphone assembly connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
6 (SNS2) - 7 (MCO-) |
Always | Below 1 Ω | |
 |
|
*a | Component without harness connected
(Roof Console Box Sub-assembly) | | |
| NG |
| GO TO STEP 12 |
|
OK | |
| |
| 9. |
INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (OUTPUT TO DCM (TELEMATICS TRANSCEIVER)) |
(a) Connect the G2 radio and display receiver assembly connector. (b) Connect the O10 roof console box sub-assembly connector.
(c) Connect the G9 DCM (telematics transceiver) connector. (d) Turn the power switch on (ACC).
| (e) Connect an oscilloscope to terminals 8 (MCO+) and 7 (MCO-) of the O10 roof console box sub-assembly connector. |
 |
|
*a | Component with harness connected
(Roof Console Box Sub-assembly) | | |
(f) Check the signal waveform according to the condition(s) in the table below. |
Item | Condition | |
Measurement terminal |
O10-8 (MCO+) - O10-7 (MCO-) | |
Tool setting | 50 mV/DIV., 500 ms/DIV. | |
Vehicle condition |
- Turn the power switch on (ACC).
- Sound is input to the roof console box sub-assembly when the user is
closer than 125 mm from the roof console box sub-assembly sound holes.
| OK: The waveform is similar to that shown in the illustration.
HINT: The oscilloscope waveform shown in the illustration is an example for reference only.
| NG |
| GO TO STEP 11 |
|
OK | |
| |
| 10. |
INSPECT DCM (TELEMATICS TRANSCEIVER) (OUTPUT TO RADIO AND DISPLAY RECEIVER ASSEMBLY) |
(a) Connect the G2 radio and display receiver assembly connector. (b) Connect the O10 roof console box sub-assembly connector.
(c) Connect the G9 DCM (telematics transceiver) connector. (d) Turn the power switch on (ACC).
| (e) Connect an oscilloscope to terminals 18 (MCO+) and 19 (MCO-) of the G9 DCM (telematics transceiver) connector. |
 |
|
*a | Component with harness connected
DCM (Telematics Transceiver) | | |
(f) Check the signal waveform according to the condition(s) in the table below. |
Item | Condition | |
Measurement terminal |
G9-18 (MCO+) - G9-19 (MCO-) | |
Tool setting | 50 mV/DIV., 500 ms/DIV. | |
Vehicle condition |
- Turn the power switch on (ACC).
- Sound is input to the roof console box sub-assembly when the user is
closer than 125 mm from the roof console box sub-assembly sound holes.
| OK: The waveform is similar to that shown in the illustration.
HINT: The oscilloscope waveform shown in the illustration is an example for reference only.
| OK |
| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG |
| REPLACE DCM (TELEMATICS TRANSCEIVER) |
| 11. |
INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY |
(a) Remove the roof console box sub-assembly. Click here
(b) Disconnect the B telephone microphone assembly connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
O10-8 (MCO+) - B-3 |
Always | Below 1 Ω | |
O10-7 (MCO-) - B-2 |
Always | Below 1 Ω | |
O10-8 (MCO+) or B-3 - O10-15 (GND) |
Always | 10 kΩ or higher | |
O10-7 (MCO-) or B-2 - O10-15 (GND) |
Always | 10 kΩ or higher | |
 |
|
*a | Component without harness connected
(Roof Console Box Sub-assembly (No. 1 Roof Wire Side)) | |
*b | Component without harness connected
(Roof Console Box Sub-assembly (Telephone Microphone Assembly Side)) | | |
| OK |
| REPLACE TELEPHONE MICROPHONE ASSEMBLY |
| NG |
| REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY |
| 12. |
INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY |
(a) Remove the roof console box sub-assembly. Click here
(b) Disconnect the B telephone microphone assembly connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
O10-6 (SNS2) - B-1 |
Always | Below 1 Ω | |
O10-7 (MCO-) - B-2 |
Always | Below 1 Ω | |
O10-6 (SNS2) or B-1 - O10-15 (GND) |
Always | 10 kΩ or higher | |
O10-7 (MCO-) or B-2 - O10-15 (GND) |
Always | 10 kΩ or higher | |
 |
|
*a | Component without harness connected
(Roof Console Box Sub-assembly (No. 1 Roof Wire Side)) | |
*b | Component without harness connected
(Roof Console Box Sub-assembly (Telephone Microphone Assembly Side)) | | |
| OK |
| REPLACE TELEPHONE MICROPHONE ASSEMBLY |
| NG |
| REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY |
| 13. |
CHECK MICROPHONE (OPERATION CHECK) |
| (a) Enter the "Microphone Check" screen. Refer to Check Microphone in Operation Check.
Click here | |
(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.
| NG |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
OK | |
| |
| 14. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ROOF CONSOLE BOX SUB-ASSEMBLY) |
(a) Disconnect the G2 radio and display receiver assembly connector. (b) Disconnect the O9 roof console box sub-assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G2-25 (SNS2) - O9-3 (SNS2) |
Always | Below 1 Ω | |
G2-25 (SNS2) or O9-3 (SNS2) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 15. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) |
(a) Disconnect the G2 radio and display receiver assembly connector. (b) Disconnect the G9 DCM (telematics transceiver) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G2-21 (MIN+) - G9-18 (MCO+) |
Always | Below 1 Ω | |
G2-22 (MIN-) - G9-19 (MCO-) |
Always | Below 1 Ω | |
G2-21 (MIN+) or G9-18 (MCO+) - Body ground |
Always | 10 kΩ or higher | |
G2-22 (MIN-) or G9-19 (MCO-) - Body ground |
Always | 10 kΩ or higher | |
G2-24 (SGND) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 16. |
CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX SUB-ASSEMBLY) |
(a) Disconnect the G9 DCM (telematics transceiver) connector. (b) Disconnect the O9 roof console box sub-assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G9-33 (MCVD) - O9-6 (MACC) |
Always | Below 1 Ω | |
G9-34 (MCI+) - O9-5 (MCO+) |
Always | Below 1 Ω | |
G9-35 (MCI-) - O9-4 (MCO-) |
Always | Below 1 Ω | |
G9-33 (MCVD) or O9-6 (MACC) - Body ground |
Always | 10 kΩ or higher | |
G9-34 (MCI+) or O9-5 (MCO+) - Body ground |
Always | 10 kΩ or higher | |
G9-35 (MCI-) or O9-4 (MCO-) - Body ground |
Always | 10 kΩ or higher | |
G9-32 (SGND) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 17. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY |
(a) Disconnect the G9 DCM (telematics transceiver) connector.
| (b) Connect the G2 radio and display receiver assembly connector. |
 |
|
*a | Component with harness connected (Radio and Display Receiver Assembly) | | |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G2-24 (SGND) - Body ground |
Always | Below 1 Ω | |
G2-22 (MIN-) - Body ground |
Always | Below 1 Ω |
| NG |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
OK | |
| |
| 18. |
INSPECT DCM (TELEMATICS TRANSCEIVER) | (a) Connect the G9 DCM (telematics transceiver) connector.
| (b) Measure the voltage according to the value(s) in the table below.
Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
G9-33 (MCVD) - Body ground |
Power switch on (ACC) |
4 to 6 V | |
 |
|
*a | Component with harness connected (DCM (Telematics Transceiver)) | | |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G9-35 (MCI-) - Body ground |
Always | Below 1 Ω | |
G9-32 (SGND) - Body ground |
Always | Below 1 Ω |
| NG |
| REPLACE DCM (TELEMATICS TRANSCEIVER) |
|
OK | |
| |
| 19. |
INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY |
(a) Remove the roof console box sub-assembly. Click here
(b) Connect the B telephone microphone assembly connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
3 (SNS2) - 4 (MCO-) |
Always | Below 1 Ω | |
 |
|
*a | Component without harness connected
(Roof Console Box Sub-assembly) | | |
| NG |
| GO TO STEP 23 |
|
OK | |
| |
| 20. |
INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (OUTPUT TO DCM (TELEMATICS TRANSCEIVER)) |
(a) Connect the G2 radio and display receiver assembly connector. (b) Connect the O9 roof console box sub-assembly connector.
(c) Connect the G9 DCM (telematics transceiver) connector. (d) Turn the engine switch on (ACC).
| (e) Connect an oscilloscope to terminals 5 (MCO+) and 4 (MCO-) of the O9 roof console box sub-assembly connector. |
 |
|
*a | Component with harness connected
(Roof Console Box Sub-assembly) | | |
(f) Check the signal waveform according to the condition(s) in the table below. |
Item | Condition | |
Measurement terminal |
O9-5 (MCO+) - O9-4 (MCO-) | |
Tool setting | 50 mV/DIV., 500 ms/DIV. | |
Vehicle condition |
- Turn the engine switch on (ACC).
- Sound is input to the roof console box sub-assembly when the user is
closer than 125 mm from the roof console box sub-assembly sound holes.
| OK: The waveform is similar to that shown in the illustration.
HINT: The oscilloscope waveform shown in the illustration is an example for reference only.
| NG |
| GO TO STEP 22 |
|
OK | |
| |
| 21. |
INSPECT DCM (TELEMATICS TRANSCEIVER) (OUTPUT TO RADIO AND DISPLAY RECEIVER ASSEMBLY) |
(a) Connect the G2 radio and display receiver assembly connector. (b) Connect the O9 roof console box sub-assembly connector.
(c) Connect the G9 DCM (telematics transceiver) connector. (d) Turn the power switch on (ACC).
| (e) Connect an oscilloscope to terminals 18 (MCO+) and 19 (MCO-) of the G9 DCM (telematics transceiver) connector. |
 |
|
*a | Component with harness connected
DCM (Telematics Transceiver) | | |
(f) Check the signal waveform according to the condition(s) in the table below. |
Item | Condition | |
Measurement terminal |
G9-18 (MCO+) - G9-19 (MCO-) | |
Tool setting | 50 mV/DIV., 500 ms/DIV. | |
Vehicle condition |
- Turn the power switch on (ACC).
- Sound is input to the roof console box sub-assembly when the user is
closer than 125 mm from the roof console box sub-assembly sound holes.
| OK: The waveform is similar to that shown in the illustration.
HINT: The oscilloscope waveform shown in the illustration is an example for reference only.
| OK |
| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG |
| REPLACE DCM (TELEMATICS TRANSCEIVER) |
| 22. |
INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY |
(a) Remove the roof console box sub-assembly. Click here
(b) Disconnect the B telephone microphone assembly connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
O9-5 (MCO+) - B-3 |
Always | Below 1 Ω | |
O9-4 (MCO-) - B-2 |
Always | Below 1 Ω | |
O9-5 (MCO+) or B-3 - O9-11 (GND) |
Always | 10 kΩ or higher | |
O9-4 (MCO-) or B-2 - O9-11 (GND) |
Always | 10 kΩ or higher | |
 |
|
*a | Component without harness connected
(Roof Console Box Sub-assembly (No. 1 Roof Wire Side)) | |
*b | Component without harness connected
(Roof Console Box Sub-assembly (Telephone Microphone Assembly Side)) | | |
| OK |
| REPLACE TELEPHONE MICROPHONE ASSEMBLY |
| NG |
| REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY |
| 23. |
INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY |
(a) Remove the roof console box sub-assembly. Click here
(b) Disconnect the B telephone microphone assembly connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
O9-3 (SNS2) - B-1 |
Always | Below 1 Ω | |
O9-4 (MCO-) - B-2 |
Always | Below 1 Ω | |
O9-3 (SNS2) or B-1 - O9-11 (GND) |
Always | 10 kΩ or higher | |
O9-4 (MCO-) or B-2 - O9-11 (GND) |
Always | 10 kΩ or higher | |
 |
|
*a | Component without harness connected
(Roof Console Box Sub-assembly (No. 1 Roof Wire Side)) | |
*b | Component without harness connected
(Roof Console Box Sub-assembly (Telephone Microphone Assembly Side)) | | |
| OK |
| REPLACE TELEPHONE MICROPHONE ASSEMBLY |
| NG |
| REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY | | 
