Part 2

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Microphone Circuit between Microphone and Navigation Receiver Assembly
- Microphone Circuit between Microphone and Navigation Receiver Assembly

Continued

17. INSPECT DCM (TELEMATICS TRANSCEIVER)

(a) Reconnect the L19 DCM (telematics transceiver) connector.

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

Standard Voltage:

Text in Illustration

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

18. 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.

19. INSPECT MAP LIGHT ASSEMBLY

(a) Reconnect the L37 navigation receiver assembly connector.

(b) Reconnect the U3 map light assembly connector.

(c) Turn the power switch on (ACC).

(d) Connect an oscilloscope to terminals 4 (MCO+) and 3 (MCO-) of the U3 map light assembly connector.

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

Result:

Text in Illustration

B -- REPLACE TELEPHONE MICROPHONE ASSEMBLY

A -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

20. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY)

(a) Disconnect the L37 navigation receiver assembly connector.

(b) Disconnect the U13 map light assembly connector.

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

21. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - DCM)

(a) Disconnect the L37 navigation receiver assembly connector.

(b) Disconnect the L19 DCM (telematics transceiver) connector.

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

22. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT ASSEMBLY)

(a) Disconnect the L19 DCM (telematics transceiver) connector.

(b) Disconnect the U13 map light assembly connector.

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

23. INSPECT NAVIGATION RECEIVER ASSEMBLY

(a) Reconnect the L37 navigation receiver assembly connector.

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

Standard Resistance:

Text in Illustration

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

24. INSPECT DCM (TELEMATICS TRANSCEIVER)

(a) Reconnect the L19 DCM (telematics transceiver) connector.

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

Standard Voltage:

Text in Illustration

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

25. 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.

26. INSPECT MAP LIGHT ASSEMBLY

(a) Reconnect the L37 navigation receiver assembly connector.

(b) Reconnect the U13 map light assembly connector.

(c) Turn the power switch on (ACC).

(d) Connect an oscilloscope to terminals 5 (MCO+) and 4 (MCO-) of the U13 map light assembly connector.

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

Result:

Text in Illustration

B -- REPLACE TELEPHONE MICROPHONE ASSEMBLY

A -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

27. REPLACE TELEPHONE MICROPHONE ASSEMBLY

(a) Replace the telephone microphone assembly.

HINT
* w/o Sliding Roof Removal
* w/ Sliding Roof Removal

(b) Check if the same malfunction recurs.

Result:

B -- REPLACE MAP LIGHT ASSEMBLY Removal

A -- END