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. This DTC is stored when a microphone connection detection signal line is disconnected. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area | |
B1579 | Voice Recognition Microphone Disconnected |
Microphone signal is lost |
- Roof console box sub-assembly
- Telephone microphone assembly
- Radio and display receiver assembly
- DCM (telematics transceiver)
- Harness or connector
| 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 9 |
|
A |
 | |
| 2. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY |
| (a) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G2-22 (MIN-) - Body ground |
Always | Below 1 Ω | |
 |
|
*a | Component with harness connected (Radio and Display Receiver Assembly) | | |
| NG |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
OK | |
| |
| 3. |
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 | |
G9-35 (MCI-) - O10-7 (MCO-) |
Always | Below 1 Ω | |
G9-35 (MCI-) or O10-7 (MCO-) - 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 | |
G2-22 (MIN-) - G9-19 (MCO-) |
Always | Below 1 Ω | |
G2-22 (MIN-) or G9-19 (MCO-) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 5. |
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 | |
| |
| 6. |
INSPECT DCM (TELEMATICS TRANSCEIVER) | (a) Connect the G9 DCM (telematics transceiver) connector.
(b) Connect the G2 radio and display receiver assembly connector.
| (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 | |
 |
|
*a | Component with harness connected
(DCM (Telematics Transceiver)) | | |
| NG |
| REPLACE DCM (TELEMATICS TRANSCEIVER) |
|
OK | |
| |
| 7. |
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) | | |
| OK |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
NG | |
| |
| 8. |
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 | |
B-1 - O10-6 (SNS2) |
Always | Below 1 Ω | |
B-2 - O10-7 (MCO-) |
Always | Below 1 Ω | |
B-1 or O10-6 (SNS2) - O10-15 (GND) |
Always | 10 kΩ or higher | |
B-2 or O10-7 (MCO-) - 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 |
| 9. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY |
| (a) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G2-22 (MIN-) - Body ground |
Always | Below 1 Ω | |
 |
|
*a | Component with harness connected (Radio and Display Receiver Assembly) | | |
| NG |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
OK | |
| |
| 10. |
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 | |
G9-35 (MCI-) - O9-4 (MCO-) |
Always | Below 1 Ω | |
G9-35 (MCI-) or O9-4 (MCO-) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 11. |
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 | |
G2-22 (MIN-) - G9-19 (MCO-) |
Always | Below 1 Ω | |
G2-22 (MIN-) or G9-19 (MCO-) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 12. |
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 | |
| |
| 13. |
INSPECT DCM (TELEMATICS TRANSCEIVER) | (a) Connect the G9 DCM (telematics transceiver) connector.
(b) Connect the G2 radio and display receiver assembly connector.
| (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 | |
 |
|
*a | Component with harness connected
(DCM (Telematics Transceiver)) | | |
| NG |
| REPLACE DCM (TELEMATICS TRANSCEIVER) |
|
OK | |
| |
| 14. |
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) | | |
| OK |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
NG | |
| |
| 15. |
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 | |
B-1 - O9-3 (SNS2) |
Always | Below 1 Ω | |
B-2 - O9-4 (MCO-) |
Always | Below 1 Ω | |
B-1 or O9-3 (SNS2) - O9-11 (GND) |
Always | 10 kΩ or higher | |
B-2 or O9-4 (MCO-) - 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 | | 
