Microphone Circuit Between Microphone and Navigation ECU
NAVIGATION: NAVIGATION SYSTEM (for HDD): Microphone Circuit between Microphone and Navigation ECU
- Microphone Circuit between Microphone and Navigation ECU
DESCRIPTION
The display and navigation module display and roof console box assembly (telephone microphone assembly) are connected to each other using the microphone connection detection signal lines.
Using this circuit, the display and navigation module display sends power to the roof console box assembly (telephone microphone assembly), and the roof console box assembly sends microphone signals to the display and navigation module display. (w/o manual (SOS) switch)
Using this circuit, the DCM (telematics transceiver) sends power to the roof console box assembly (telephone microphone assembly), and the roof console box assembly (telephone microphone assembly) sends microphone signals to the display and navigation module display via the DCM (telematics transceiver). (w/ manual (SOS) switch)
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
If the DCM (telematics transceiver) has been replaced, perform the Activate DCM procedure using the Techstream DCM Activation.
PROCEDURE
1. CONFIRM MODEL
(a) Choose the model to be inspected.
Result:
B -- CHECK HARNESS AND CONNECTOR
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR
(a) Disconnect the E62 display and navigation module display connector.
(b) Disconnect the Q2 roof console box assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. INSPECT DISPLAY AND NAVIGATION MODULE DISPLAY
(a) Disconnect the Q2 roof console box assembly connector.
(b) Reconnect the E62 display and navigation module display connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(e) Proceed to the next step based on the inspection result.
Result:
B -- INSPECT ROOF CONSOLE BOX ASSEMBLY
A -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Removal
4. CHECK HARNESS AND CONNECTOR
(a) Disconnect the E62 display and navigation module display connector.
(b) Disconnect the Q2 roof console box assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR
(a) Disconnect the E62 display and navigation module display connector.
(b) Disconnect the E97 DCM (telematics transceiver) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR
(a) Disconnect the E97 DCM (telematics transceiver) connector.
(b) Disconnect the Q2 roof console box assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
7. INSPECT DISPLAY AND NAVIGATION MODULE DISPLAY
(a) Disconnect the E97 DCM (telematics transceiver) connector.
(b) Reconnect the E62 display and navigation module display connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
Text in Illustration:
NG -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Removal
OK -- Continue to next step.
8. INSPECT DCM (TELEMATICS TRANSCEIVER)
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
Text in Illustration:
NG -- REPLACE DCM (TELEMATICS TRANSCEIVER) Removal
OK -- Continue to next step.
9. INSPECT ROOF CONSOLE BOX ASSEMBLY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
Text in Illustration:
NG -- REPLACE TELEPHONE MICROPHONE ASSEMBLY
OK -- Continue to next step.
10. INSPECT ROOF CONSOLE BOX ASSEMBLY
(a) Reconnect the E62 display and navigation module display connector.
(b) Reconnect the E97 DCM (telematics transceiver) connector. (w/ manual (SOS) switch)
(c) Reconnect the Q2 roof console box assembly connector.
(d) Turn the engine switch on (ACC).
(e) Connect an oscilloscope to terminals 13 (MCO+) and 14 (MCO-) of the Q2 roof console box assembly connector.
(f) Check the waveform of the telephone microphone assembly using the oscilloscope.
Result:
Text in Illustration
Text in Illustration:
B -- REPLACE TELEPHONE MICROPHONE ASSEMBLY
A -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table
11. REPLACE TELEPHONE MICROPHONE ASSEMBLY
(a) Replace the telephone microphone assembly Removal.
(b) Check if the same malfunction recurs.
Result:
B -- REPLACE ROOF CONSOLE BOX ASSEMBLY Removal
A -- END