Toyota CH-R Service Manual: Voice Guidance does not Function

Toyota CH-R Service Manual / Navigation / Multi Info Display / Navigation System / Voice Guidance does not Function

WIRING DIAGRAM

PROCEDURE

1.	CHECK VOICE GUIDANCE SETTING

(a) Check that the voice guidance setting is not off.

OK:

Voice guidance setting is not off.

CHANGE VOICE GUIDANCE SETTING TO ON

2.	CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NAVIGATION ECU)

(a) Disconnect the F130 radio and display receiver assembly connector.

(b) Disconnect the F135 navigation ECU connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F130-22 (SI+) - F135-6 (VOI+)	Always	Below 1 Ω
F130-23 (SI-) - F135-7 (VOI-)	Always	Below 1 Ω
F130-22 (SI+) or F135-6 (VOI+) - Body ground	Always	10 kΩ or higher
F130-23 (SI-) or F135-7 (VOI-) - Body ground	Always	10 kΩ or higher
F135-8 (SLD1) - Body ground	Always	10 kΩ or higher

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

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