DESCRIPTION
The stereo component tuner assembly sends the sound data signal or image data signal from a device to the navigation receiver assembly via this circuit.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
After replacing the navigation receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary.
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - STEREO COMPONENT TUNER ASSEMBLY) |
(a) Disconnect the s1 and t1 navigation receiver assembly connectors.
(b) Disconnect the s2 and t2 stereo component tuner assembly connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
s1-1 (USV4) - s2-1 (USV4) |
Always |
Below 1 Ω |
s1-2 (US4-) - s2-2 (US4-) |
Always |
Below 1 Ω |
s1-3 (US4+) - s2-3 (US4+) |
Always |
Below 1 Ω |
s1-4 (UGD4) - s2-4 (UGD4) |
Always |
Below 1 Ω |
s1-5 (USG4) - s2-5 (USG4) |
Always |
Below 1 Ω |
t1-4 (+B2) - t2-4 (+B2) |
Always |
Below 1 Ω |
t1-3 (ACC2) - t2-3 (ACC2) |
Always |
Below 1 Ω |
t1-8 (GND2) - t2-8 (GND2) |
Always |
Below 1 Ω |
s1-1 (USV4) - Body ground |
Always |
10 kΩ or higher |
s1-2 (US4-) - Body ground |
Always |
10 kΩ or higher |
s1-3 (US4+) - Body ground |
Always |
10 kΩ or higher |
s1-4 (UGD4) - Body ground |
Always |
10 kΩ or higher |
s1-5 (USG4) - Body ground |
Always |
10 kΩ or higher |
t1-4 (+B2) - Body ground |
Always |
10 kΩ or higher |
t1-3 (ACC2) - Body ground |
Always |
10 kΩ or higher |
t1-8 (GND2) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
2. |
REPLACE NO. 1 NAVIGATION WIRE |
(a) Replace the No. 1 navigation wire (See page ).
(b) Check that the malfunction disappears.
OK:
Malfunction disappears.
OK | ![]() |
END (NO. 1 NAVIGATION WIRE IS DEFECTIVE) |
NG | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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