Voice Guidance does not Function [12/2019 - 10/2022]: Procedure

1. Check that the voice guidance setting is not off.

   OK

   Voice guidance setting is not off.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CHANGE VOICE GUIDANCE SETTING TO ON 

Result: 

OK 

See step  2

1. Disconnect the H3 radio and display receiver assembly connector.
2. Disconnect the H18 navigation ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H3-22 (SI+) - H18-6 (VOI+)	Always	Below 1 Ω
   H3-23 (SI-) - H18-7 (VOI-)	Always	Below 1 Ω
   H3-22 (SI+) or H18-6 (VOI+) - Body ground	Always	10 kΩ or higher
   H3-23 (SI-) or H18-7 (VOI-) - Body ground	Always	10 kΩ or higher
   H18-8 (SLD1) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR