Voice Guidance does not Function [11/2017 - ]: Procedure

1. Check that the voice guidance settings are not off.

   OK

   Voice guidance settings are not off.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CHANGE VOICE GUIDANCE SETTINGS TO ON 

Result: 

OK 

See step  2

1. Disconnect the O148 radio receiver assembly connector.
2. Disconnect the O150 navigation ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O148-22 (SI+) - O150-6 (VOI+)	Always	Below 1 Ω
   O148-23 (SI-) - O150-7 (VOI-)	Always	Below 1 Ω
   O148-22 (SI+) or O150-6 (VOI+) - Body ground	Always	10 kΩ or higher
   O148-23 (SI-) or O150-7 (VOI-) - Body ground	Always	10 kΩ or higher
   O150-8 (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 [11/2017 - 03/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [03/2019 - 09/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [09/2020 - 01/2023]  , or refer to  PROBLEM SYMPTOMS TABLE [01/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR