Sound Signal Circuit between Navigation Receiver Assembly and Stereo Component Amplifier [08/2015 - 08/2021]: Procedure

1. Disconnect the H18 multi-media module receiver assembly connector.
2. for 9 Speakers
   1. Disconnect the H23 stereo component amplifier assembly connector.
3. for 17 Speakers
   1. Disconnect the R32 stereo component amplifier assembly connector.
4. w/ Rear Seat Entertainment System
   1. Disconnect the H35 multi-display controller sub-assembly connector.
5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   for 9 Speakers 

   Tester Connection	Condition	Specified Condition
   H18-2 (MI+) - H23-5 (MO+)	Always	Below 1 Ω
   H18-3 (MI-) - H23-6 (MO-)	Always	Below 1 Ω
   H18-4 (SLDI) - H23-7 (SLDO)	Always	Below 1 Ω
   H18-5 (MO+) - H23-2 (MI+)	Always	Below 1 Ω
   H18-6 (MO-) - H23-3 (MI-)	Always	Below 1 Ω
   H18-7 (SLDO) - H23-4 (SLDI)	Always	Below 1 Ω
   H18-2 (MI+) - Body ground	Always	10 kΩ or higher
   H18-3 (MI-) - Body ground	Always	10 kΩ or higher
   H18-4 (SLDI) - Body ground	Always	10 kΩ or higher
   H18-5 (MO+) - Body ground	Always	10 kΩ or higher
   H18-6 (MO-) - Body ground	Always	10 kΩ or higher
   H18-7 (SLDO) - Body ground	Always	10 kΩ or higher

   for 17 Speakers (w/o Rear Seat Entertainment System) 

   Tester Connection	Condition	Specified Condition
   H18-2 (MI+) - R32-5 (MO+)	Always	Below 1 Ω
   H18-3 (MI-) - R32-6 (MO-)	Always	Below 1 Ω
   H18-4 (SLDI) - R32-7 (SLDO)	Always	Below 1 Ω
   H18-5 (MO+) - H23-2 (MI+)	Always	Below 1 Ω
   H18-6 (MO-) - H23-3 (MI-)	Always	Below 1 Ω
   H18-7 (SLDO) - H23-4 (SLDI)	Always	Below 1 Ω
   H18-2 (MI+) - Body ground	Always	10 kΩ or higher
   H18-3 (MI-) - Body ground	Always	10 kΩ or higher
   H18-4 (SLDI) - Body ground	Always	10 kΩ or higher
   H18-5 (MO+) - Body ground	Always	10 kΩ or higher
   H18-6 (MO-) - Body ground	Always	10 kΩ or higher
   H18-7 (SLDO) - Body ground	Always	10 kΩ or higher

   for 17 Speakers (w/ Rear Seat Entertainment System) 

   Tester Connection	Condition	Specified Condition
   H18-2 (MI+) - H35-5 (MO+)	Always	Below 1 Ω
   H18-3 (MI-) - H35-6 (MO-)	Always	Below 1 Ω
   H18-4 (SLDI) - H35-7 (SLDO)	Always	Below 1 Ω
   H35-2 (MI+) - R32-5 (MO+)	Always	Below 1 Ω
   H35-3 (MI-) - R32-6 (MO-)	Always	Below 1 Ω
   H35-4 (SLDI) - R32-7 (SLDO)	Always	Below 1 Ω
   H35-8 (WUI) - R32-1 (WUO)	Always	Below 1 Ω
   H18-5 (MO+) - R32-2 (MI+)	Always	Below 1 Ω
   H18-6 (MO-) - R32-3 (MI-)	Always	Below 1 Ω
   H18-7 (SLDO) - R32-4 (SLDI)	Always	Below 1 Ω
   H35-2 (MI+) - Body ground	Always	10 kΩ or higher
   H35-3 (MI-) - Body ground	Always	10 kΩ or higher
   H35-4 (SLDI) - Body ground	Always	10 kΩ or higher
   H18-5 (MO+) - Body ground	Always	10 kΩ or higher
   H18-6 (MO-) - Body ground	Always	10 kΩ or higher
   H18-7 (SLDO) - Body ground	Always	10 kΩ or higher
   H35-8 (WUI) - Body ground	Always	10 kΩ or higher
   H18-2 (MI+) - Body ground	Always	10 kΩ or higher
   H18-3 (MI-) - Body ground	Always	10 kΩ or higher
   H18-4 (SLDI) - Body ground	Always	10 kΩ or higher

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] , or refer to PROBLEM SYMPTOMS TABLE [08/2019 - 08/2021] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR