DESCRIPTION The stereo
component tuner assembly sends the sound data signal or image data
signal from a device to the radio and display receiver assembly via this
circuit. WIRING DIAGRAM
 PROCEDURE
| 1. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - SATELLITE RADIO TUNER ASSEMBLY) |
(a) Disconnect the K5 and L2 radio and display receiver assembly connectors.
(b) Disconnect the K2 and L3 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 | |
K5-1 (USV4) - K2-1 (USV4) |
Always | Below 1 Ω | |
K5-2 (US4-) - K2-2 (US4-) |
Always | Below 1 Ω | |
K5-3 (US4+) - K2-3 (US4+) |
Always | Below 1 Ω | |
K5-4 (UGD4) - K2-4 (UGD4) |
Always | Below 1 Ω | |
K5-5 (USG4) - K2-5 (USG4) |
Always | Below 1 Ω | |
L2-4 (+B2) - L3-4 (+B2) |
Always | Below 1 Ω | |
L2-3 (ACC2) - L3-3 (ACC2) |
Always | Below 1 Ω | |
L2-8 (GND2) - L3-8 (GND2) |
Always | Below 1 Ω | |
K5-1 (USV4) - Body ground |
Always | 10 kΩ or higher | |
K5-2 (US4-) - Body ground |
Always | 10 kΩ or higher | |
K5-3 (US4+) - Body ground |
Always | 10 kΩ or higher | |
K5-4 (UGD4) - Body ground |
Always | 10 kΩ or higher | |
K5-5 (USG4) - Body ground |
Always | 10 kΩ or higher | |
L2-4 (+B2) - Body ground |
Always | 10 kΩ or higher | |
L2-3 (ACC2) - Body ground |
Always | 10 kΩ or higher | |
L2-8 (GND2) - Body ground |
Always | 10 kΩ or higher | Result |
Result | Proceed to | |
OK | A | |
NG (for Column Shift Type) |
B | | NG (for Floor Shift Type) |
C |
| B |
 | REPAIR OR REPLACE NO. 1 NAVIGATION WIRE |
| C |
| REPAIR OR REPLACE NO. 1 NAVIGATION WIRE |
|
A |
 | |
| 2. |
CHECK NO. 1 NAVIGATION WIRE (LVDS COMMUNICATION LINE) |
(a) Replace the No. 1 navigation wire with a known good one.
- for Column Shift Type: See page
- for Floor Shift Type: See page
(b) Check that the malfunction disappears. OK.: Malfunction disappears
| OK |
| END (NO. 1 NAVIGATION WIRE [LVDS COMMUNICATION LINE] IS DEFECTIVE) |
| NG |
| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE | | 
