DESCRIPTION
The navigation receiver assembly and map light assembly (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 Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1579 |
Telephone microphone signal is lost. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
After replacing the navigation receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary.
PROCEDURE
1. |
INSPECT NAVIGATION RECEIVER ASSEMBLY |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
|
2. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
Model |
Proceed to |
---|---|
w/ Manual (SOS) Switch |
A |
w/o Manual (SOS) Switch |
B |
B |
GO TO STEP 7 |
|
3. |
CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) |
(a) Disconnect the F39 DCM (telematics transceiver) connector.
(b) Disconnect the U2 map light assembly (telephone microphone assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F39-35 (MCI-) - U2-12 (MCO-) |
Always |
Below 1 Ω |
F39-35 (MCI-) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) |
(a) Disconnect the G37 navigation receiver assembly connector.
(b) Disconnect the F39 DCM (telematics transceiver) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G37-19 (MIN-) - F39-19 (MCO-) |
Always |
Below 1 Ω |
G37-19 (MIN-) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) |
(a) Disconnect the G37 navigation receiver assembly connector.
(b) Disconnect the U2 map light assembly (telephone microphone assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G37-6 (SNS2) - U2-15 (SNS2) |
Always |
Below 1 Ω |
G37-6 (SNS2) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
6. |
INSPECT DCM (TELEMATICS TRANSCEIVER) |
(a) Reconnect the F39 DCM (telematics transceiver) connector.
(b) Reconnect the G37 navigation receiver assembly connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(d) Proceed to the next step based on the inspection result.
Result |
Proceed to |
---|---|
NG |
A |
OK |
B |
*a |
Component with harness connected (DCM (Telematics Transceiver)) |
A |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
B |
GO TO STEP 8 |
7. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) |
(a) Disconnect the G37 navigation receiver assembly connector.
(b) Disconnect the U2 map light assembly (telephone microphone assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G37-6 (SNS2) - U2-15 (SNS2) |
Always |
Below 1 Ω |
G37-19 (MIN-) - U2-12 (MCO-) |
Always |
Below 1 Ω |
G37-6 (SNS2) - Body ground |
Always |
10 kΩ or higher |
G37-19 (MIN-) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
8. |
INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
NG |
REPLACE MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) |
Terminals Of Ecu
TERMINALS OF ECU
1. RADIO AND DISPLAY RECEIVER ASSEMBLY
Terminal No. (Symbols)
Wiring Color
Terminal Description
Condition
Specification
G48-1 (FR+) - G48-7 (GND)
P - BR
...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful bec ...