Microphone Circuit between Microphone and Radio Receiver
AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: Microphone Circuit between Microphone and Radio Receiver
- Microphone Circuit between Microphone and Radio Receiver
DESCRIPTION
* Using this circuit, the radio receiver assembly sends power to the roof console box assembly (telephone microphone assembly), and the roof console box assembly sends microphone signals to the radio receiver assembly (w/o Manual (SOS) Switch).
* Using this circuit, the 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 radio receiver assembly via the telematics transceiver. The radio receiver assembly and roof console box assembly (telephone microphone assembly) are connected to each other using the microphone connection detection signal lines (w/ Manual (SOS) Switch).
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
If the 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 -- 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 - ROOF CONSOLE BOX)
(a) Disconnect the D58 radio receiver assembly connector.
(b) Disconnect the T5 roof console box 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 ROOF CONSOLE BOX 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 - ROOF CONSOLE BOX)
(a) Disconnect the D58 radio receiver assembly connector.
(b) Disconnect the T5 roof console box assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPLACE RADIO RECEIVER ASSEMBLY Removal
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - TELEMATICS TRANSCEIVER)
(a) Disconnect the D58 radio receiver assembly connector.
(b) Disconnect the D73 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 - ROOF CONSOLE BOX)
(a) Disconnect the D73 telematics transceiver connector.
(b) Disconnect the T5 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.
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 ROOF CONSOLE BOX ASSEMBLY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE ROOF CONSOLE BOX ASSEMBLY Removal
OK -- Continue to next step.
10. INSPECT ROOF CONSOLE BOX ASSEMBLY
(a) Reconnect the D58 radio receiver assembly connector.
(b) Reconnect the D73 telematics transceiver connector (w/ Manual(SOS) Switch ).
(c) Reconnect the T5 roof console box assembly connector.
(d) Turn the ignition switch to ACC.
(e) Connect an oscilloscope to terminals 13 (MIC+) and 12 (MIC-) of the T5 roof console box assembly connector.
(f) Check the waveform of the telephone microphone assembly using an oscilloscope.
Result
Text in Illustration
B -- REPLACE ROOF CONSOLE BOX ASSEMBLY Removal
A -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table