Microphone Circuit Between Microphone And Navigation ECU

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (w/o Navigation System): Microphone Circuit between Microphone and Navigation ECU
- Microphone Circuit between Microphone and Navigation ECU

DESCRIPTION

* Using this circuit, the display and navigation module display sends power to the map light assembly (telephone microphone assembly), and the map light assembly sends microphone signals to the display and navigation module display (w/o Safety Connect system).

* Using this circuit, the telematics transceiver sends power to the map light assembly (telephone microphone assembly), and the map light assembly (telephone microphone assembly) sends microphone signals to the display and navigation module display via the telematics transceiver. The display and navigation module display and map light assembly (telephone microphone assembly) are connected to each other using the microphone connection detection signal lines (w/ Safety Connect system).

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CONFIRM MODEL

(a) Choose the model to be inspected.

Result





B -- INSPECT RADIO RECEIVER ASSEMBLY
A -- Continue to next step.

2. INSPECT RADIO 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:





Text in Illustration





NG -- REPLACE RADIO RECEIVER ASSEMBLY Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - MAP LIGHT)

(a) Disconnect the F39 radio receiver assembly connector.

(b) Disconnect the R7 map light 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





B -- INSPECT MAP LIGHT ASSEMBLY

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR

4. INSPECT RADIO RECEIVER ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





Text in Illustration





NG -- REPLACE RADIO RECEIVER ASSEMBLY Removal
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - MAP LIGHT)

(a) Disconnect the F39 radio receiver assembly connector.

(b) Disconnect the R7 map light 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.

6. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - TELEMATICS TRANSCEIVER)

(a) Disconnect the F39 radio receiver assembly connector.

(b) Disconnect the P2 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.

7. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - MAP LIGHT)

(a) Disconnect the P2 telematics transceiver connector.

(b) Disconnect the R7 map light 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.

8. INSPECT TELEMATICS TRANSCEIVER

(a) Measure the voltage according to the value(s) in the table below.





Standard Voltage:





Text in Illustration





NG -- REPLACE TELEMATICS TRANSCEIVER Removal
OK -- Continue to next step.

9. INSPECT MAP LIGHT ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





Text in Illustration





NG -- REPLACE TELEPHONE MICROPHONE ASSEMBLY
OK -- Continue to next step.

10. INSPECT MAP LIGHT ASSEMBLY

(a) Reconnect the F39 radio receiver assembly connector.

(b) Reconnect the P2 telematics transceiver connector (w/ Safety Connect system).

(c) Reconnect the R7 map light assembly connector.





(d) Turn the engine switch on (ACC).

(e) Connect an oscilloscope to terminals MI1+ and MIC- of the R7 telephone microphone assembly connector.

(f) Check the waveform of the telephone microphone assembly using an oscilloscope.

Result





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 MAP LIGHT ASSEMBLY Removal

A -- END