WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.
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PROCEDURE
1. | CHECK VOICE GUIDANCE SETTING |
(a) Check that the voice guidance settings are not off.
OK:
Voice guidance settings are not off.
NG | ![]() | CHANGE THE VOICE GUIDANCE SETTINGS TO ON |
|
2. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NAVIGATION ECU) |
(a) Disconnect the J149 radio receiver assembly connector.
(b) Disconnect the J153 navigation ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J149-22 (SI+) - J153-6 (VOI+) | Always | Below 1 Ω |
J149-23 (SI-) - J153-7 (VOI-) | Always | Below 1 Ω |
J149-22 (SI+) or J153-6 (VOI+) - Body ground | Always | 10 kΩ or higher |
J149-23 (SI-) or J153-7 (VOI-) - Body ground | Always | 10 kΩ or higher |
J153-8 (SLD1) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | CHECK AUDIO FUNCTION |
(a) Check that sound can be heard from a front speaker.
OK:
Sound can be heard.
OK | ![]() | REPLACE NAVIGATION ECU |
NG | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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