DESCRIPTION
WIRING DIAGRAM
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) |
(a) Disconnect the G49 radio and display 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 |
---|---|---|
G49-4 (MACC) - U2-14 (MACC) |
Always |
Below 1 Ω |
G49-5 (MIN+) - U2-13 (MCO+) |
Always |
Below 1 Ω |
G49-6 (SNS2) - U2-15 (SNS2) |
Always |
Below 1 Ω |
G49-19 (MIN-) - U2-12 (MCO-) |
Always |
Below 1 Ω |
G49-4 (MACC) - Body ground |
Always |
10 kΩ or higher |
G49-5 (MIN+) - Body ground |
Always |
10 kΩ or higher |
G49-6 (SNS2) - Body ground |
Always |
10 kΩ or higher |
G49-18 (SGND) - Body ground |
Always |
10 kΩ or higher |
G49-19 (MIN-) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY |
(a) Reconnect the G49 radio and display receiver assembly connector.
(b) Reconnect the U2 map light assembly (telephone microphone assembly) 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:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G49-18 (SGND) - Body ground |
Always |
Below 1 Ω |
G49-19 (MIN-) - Body ground |
Always |
Below 1 Ω |
*a |
Component with harness connected (Radio and Display Receiver Assembly) |
NG |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
3. |
INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) |
(a) Disconnect the U2 map light assembly (telephone microphone assembly) connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
GO TO STEP 5 |
|
4. |
INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) |
(a) Reconnect the G49 radio and display receiver assembly connector.
(b) Reconnect the U2 map light assembly (telephone microphone assembly) connector.
(c) Turn the ignition switch to ACC.
(d) Connect an oscilloscope to terminals 13 (MCO+) and 12 (MCO-) of the U2 map light assembly (telephone microphone assembly) connector. Text in Illustration
|
|
(e) Check the waveform of the telephone microphone assembly using the oscilloscope.
Result |
Proceed to |
---|---|
A waveform synchronized with the voice input to the map light assembly (telephone microphone assembly) is output |
A |
A waveform synchronized with the voice input to the map light assembly (telephone microphone assembly) is not output |
B |
A |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
5. |
REPLACE TELEPHONE MICROPHONE ASSEMBLY |
(a) Replace the telephone microphone assembly (See page ).
(b) Check if the same malfunction recurs.
Result |
Proceed to |
---|---|
Malfunction does not recur (returns to normal) |
A |
Malfunction recurs |
B |
A |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
B |
REPLACE MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) |
Menu list of the hands-free phone system
Normal operation
Using a short cut key
Automatic volume adjustment
When vehicle speed reaches 50 mph (80 km/h) or more, the volume automatically
increases. The volume returns to the previous volume setting when vehicle speed
drops to 43 mph (70 k ...
VSC OFF Indicator Light Remains ON
DESCRIPTION
Operation of the VSC OFF switch changes the vehicle between normal mode, TRAC
OFF mode*1 (AUTO LSD mode*2) and VSC OFF mode. During normal mode, pressing the
VSC OFF switch for a short amount of time changes vehicle to TRAC OFF mode*1 (AUTO
...