Lexus ES: Voice Guidance does not Function
WIRING DIAGRAM
PROCEDURE
| 1. | CHECK VOICE GUIDANCE SETTING |
(a) Check that the voice guidance settings are not off.
OK:
Voice guidance settings are not off.
| NG | .gif) | CHANGE VOICE GUIDANCE SETTINGS TO ON |
|
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| 2. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NAVIGATION ECU) |
(a) Disconnect the G1 radio receiver assembly connector.
(b) Disconnect the G14 navigation ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G1-22 (SI+) - G14-6 (VOI+) | Always | Below 1 Ω |
| G1-23 (SI-) - G14-7 (VOI-) | Always | Below 1 Ω |
| G1-22 (SI+) or G14-6 (VOI+) - Body ground | Always | 10 kΩ or higher |
| G1-23 (SI-) or G14-7 (VOI-) - Body ground | Always | 10 kΩ or higher |
| G14-8 (SLD1) - Body ground | Always | 10 kΩ or higher |
| OK | | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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