Navigation System Speaker Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK SPEAKER

CHECK FRONT SIDE SPEAKER

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)

INSPECT REAR SPEAKER ASSEMBLY

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Check the malfunctioning speakers.
   

   Result

   Result	Proceed to
   Malfunction in front speaker area	A
   Malfunction in rear speaker area	B

1. Check the malfunctioning speakers.
   

   Result

   Result	Proceed to
   Front No. 2 speaker assembly	A
   Front No. 1 speaker assembly	B

1. Temporarily replace the front No. 2 speaker with a new or normally functioning one (HILUX_TGN26 RM0000014T7034X.html).
   

2. Check that the malfunction disappears.
   

   HINT:

   1. Connect all the speaker connectors to the speakers.
      
   2. When there is a possibility that either the right or left speaker is defective, inspect by interchanging the right one with the left one.
      

   Result

   Result	Proceed to
   Malfunction disappears	A
   Malfunction does not disappear	B

1. Disconnect the G105 navigation receiver assembly connector.
   

2. Disconnect the H6*1 and/or I6*2 front No. 2 speaker connector.
   

   1. *1: for RH
      
   2. *2: for LH
      

3. Measure the resistance according to the value(s) in the table below.
   
   

   Standard Resistance:

   for RH

   Tester Connection	Condition	Specified Condition
   G105-1 (FR+) - H6-4 (TWR+)	Always	Below 1 Ω
   G105-5 (FR-) - H6-2 (TWR-)
   G105-1 (FR+) - Body ground	Always	10 kΩ or higher
   G105-5 (FR-) - Body ground

   for LH

   Tester Connection	Condition	Specified Condition
   G105-2 (FL+) - I6-4 (TWL+)	Always	Below 1 Ω
   G105-6 (FL-) - I6-2 (TWL-)
   G105-2 (FL+) - Body ground	Always	10 kΩ or higher
   G105-6 (FL-) - Body ground

1. Disconnect the H4*1 and/or I1*2 front No. 1 speaker assembly connector.
   

   1. *1: for RH
      
   2. *2: for LH
      

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	4 Ω

1. *1: for RH
   
2. *2: for LH
   

1. Disconnect the H6*1 and/or I6*2 front No. 2 speaker assembly connector.
   

2. Disconnect the H4*1 and/or I1*2 front No. 1 speaker assembly connector.
   

3. Measure the resistance according to the value(s) in the table below.
   
   

   Standard Resistance:

   for RH

   Tester Connection	Condition	Specified Condition
   H6-3 (+) - H4-1	Always	Below 1 Ω
   H6-1 (-) - H4-2
   H6-3 (+) - Body ground	Always	10 kΩ or higher
   H6-1 (-) - Body ground

   for LH

   Tester Connection	Condition	Specified Condition
   I6-3 (+) - I1-1	Always	Below 1 Ω
   I6-1 (-) - I1-2
   I6-3 (+) - Body ground	Always	10 kΩ or higher
   I6-1 (-) - Body ground

1. Disconnect the J7*1 and/or J3*2 rear speaker assembly connector.
   

   1. *1: for RH
      
   2. *2: for LH
      

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	4 Ω

1. Disconnect the G104 navigation receiver assembly connector.
   

2. Disconnect the J7*1 and/or J3*2 rear speaker assembly connector.
   

   1. *1: for RH
      
   2. *2: for LH
      

3. Measure the resistance according to the value(s) in the table below.
   
   

   Standard Resistance:

   for RH

   Tester Connection	Condition	Specified Condition
   G104-1 (RR+) - J7-1	Always	Below 1 Ω
   G104-3 (RR-) - J7-2
   G104-1 (RR+) - Body ground	Always	10 kΩ or higher
   G104-3 (RR-) - Body ground

   for LH

   Tester Connection	Condition	Specified Condition
   G104-2 (RL+) - J3-1	Always	Below 1 Ω
   G104-6 (RL-) - J3-2
   G104-2 (RL+) - Body ground	Always	10 kΩ or higher
   G104-6 (RL-) - Body ground