DESCRIPTION
The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the navigation receiver assembly via this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier assembly, and then is sent to the speakers.
If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, DCM (telematics transceiver)*1 or speakers.
WIRING DIAGRAM
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) |
(a) Disconnect the G37 navigation receiver assembly connector. |
|
(b) Disconnect the G53 No. 1 stereo jack adapter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G37-25 (ADPG) - G53-9 (AUXO) |
Always |
Below 1 Ω |
G37-26 (VAR+) - G53-6 (ARO) |
Always |
Below 1 Ω |
G37-28 (VAL+) - G53-7 (ALO) |
Always |
Below 1 Ω |
G37-27 (VA-) - G53-8 (ASGN) |
Always |
Below 1 Ω |
G37-11 (AGND) - G53-10 (AGND) |
Always |
Below 1 Ω |
G37-25 (ADPG) - Body ground |
Always |
10 kΩ or higher |
G37-26 (VAR+) - Body ground |
Always |
10 kΩ or higher |
G37-28 (VAL+) - Body ground |
Always |
10 kΩ or higher |
G37-27 (VA-) - Body ground |
Always |
10 kΩ or higher |
G37-11 (AGND) - Body ground |
Always |
10 kΩ or higher |
*a |
Front view of wire harness connector (to Navigation Receiver Assembly) |
*b |
Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly) |
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK OCCUPANT CLASSIFICATION ECU
Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
a9-1 (+B) - a9-3 (GND)
W - W-B
...
Navigation Receiver Assembly Power Source Circuit
DESCRIPTION
This is the power source circuit to operate the navigation receiver assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following
inspection procedure.
PROCE ...