Audio And Visual System (For Radio And Display Type) Speaker Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK SPEAKER

CHECK FRONT SIDE SPEAKER

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER - FRONT NO. 2 SPEAKER)

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

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

INSPECT REAR SPEAKER ASSEMBLY

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER - REAR SPEAKER)

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 speaker with a new or normally functioning one (Toyota Fortuner RM0000014T702CX.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 R25 radio and display receiver assembly connector.
   

2. Disconnect the T25*1 and/or T24*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
   R25-1 (FR+) - T25-4	Always	Below 1 Ω
   R25-5 (FR-) - T25-2
   R25-1 (FR+) - Body ground	Always	10 kΩ or higher
   R25-5 (FR-) - Body ground

   for LH

   Tester Connection	Condition	Specified Condition
   R25-2 (FL+) - T24-4	Always	Below 1 Ω
   R25-6 (FL-) - T24-2
   R25-2 (FL+) - Body ground	Always	10 kΩ or higher
   R25-6 (FL-) - Body ground

1. Disconnect the S16*1 and/or S15*2 speaker 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 T25*1 and/or T24*2 speaker connector.
   

2. Disconnect the S16*1 and/or S15*2 speaker connector.
   

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

   Standard Resistance:

   for RH

   Tester Connection	Condition	Specified Condition
   T25-3 - S16-1	Always	Below 1 Ω
   T25-1 - S16-2
   T25-3 - Body ground	Always	10 kΩ or higher
   T25-1 - Body ground

   for LH

   Tester Connection	Condition	Specified Condition
   T24-3 - S15-1	Always	Below 1 Ω
   T24-1 - S15-2
   T24-3 - Body ground	Always	10 kΩ or higher
   T24-1 - Body ground

1. Disconnect the S18*1 and/or S17*2 speaker 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 R26 radio and display receiver assembly connector.
   

2. Disconnect the S18*1 and/or S17*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
   R26-1 (RR+) - S18-1	Always	Below 1 Ω
   R26-3 (RR-) - S18-2
   R26-1 (RR+) - Body ground	Always	10 kΩ or higher
   R26-3 (RR-) - Body ground

   for LH

   Tester Connection	Condition	Specified Condition
   R26-2 (RL+) - S17-1	Always	Below 1 Ω
   R26-6 (RL-) - S17-2
   R26-2 (RL+) - Body ground	Always	10 kΩ or higher
   R26-6 (RL-) - Body ground