NAVIGATION SYSTEM (for SD) > Speaker Circuit

for Preparation Click here


DESCRIPTION

The navigation receiver assembly sends sound signals to the speaker.

WIRING DIAGRAM


E231116E01


INSPECTION PROCEDURE

1.CHECK SPEAKER

  1. Check the malfunctioning speakers.

    Result 
    Result
    		Proceed to
    Malfunction in front speaker area
    		A
    Malfunction in rear speaker area*
    		B
    1. *: except Regular Cab


B
Go to step 8
A


2.CHECK FRONT SIDE SPEAKER

  1. Check the malfunctioning speakers.

    Result 
    Result
    		Proceed to
    Malfunction in front No. 2 speaker assembly
    		A
    Malfunction in front No. 1 speaker assembly
    		B


B
Go to step 5
A


3.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

  1. Temporarily replace the front No. 2 speaker assembly with a new or normally functioning one.

    1. for Regular Cab: Click here
    2. for Double Cab: Click here
    3. for CrewMax: Click here

  1. Check that the speaker sounds normally.

    OK:
    Malfunction disappears.
    Result 
    Result
    		Proceed to
    OK
    		A
    NG (for Regular Cab)
    		B
    NG (for Double Cab)
    		C
    NG (for CrewMax)
    		D


B
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY (Click here)

C
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY (Click here)

D
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY (Click here)
A


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

  1. Disconnect the K30 navigation receiver assembly connector.

  1. Disconnect the K11*1 and/or K13*2 front No. 2 speaker assembly connector.

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

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

    Standard Resistance:
    for RH:
    Tester Connection
    		Condition
    		Specified Condition
    K30-1 (FR+) - K11-3 (TWR+)
    		Always
    		Below 1 Ω
    K30-5 (FR-) - K11-4 (TWR-)
    		Always
    		Below 1 Ω
    K30-1 (FR+) - Body ground
    		Always
    		10 kΩ or higher
    K30-5 (FR-) - Body ground
    		Always
    		10 kΩ or higher
    for LH:
    Tester Connection
    		Condition
    		Specified Condition
    K30-2 (FL+) - K13-3 (TWL+)
    		Always
    		Below 1 Ω
    K30-6 (FL-) - K13-4 (TWL-)
    		Always
    		Below 1 Ω
    K30-2 (FL+) - Body ground
    		Always
    		10 kΩ or higher
    K30-6 (FL-) - Body ground
    		Always
    		10 kΩ or higher
    Result 
    Result
    		Proceed to
    OK (for Column Shift Type)
    		A
    OK (for Floor Shift Type)
    		B
    NG
    		C


B
REPLACE NAVIGATION RECEIVER ASSEMBLY (Click here)

C
REPAIR OR REPLACE HARNESS OR CONNECTOR
A

REPLACE NAVIGATION RECEIVER ASSEMBLY (Click here)  

5.INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    E192950

  1. Disconnect the M8*1 and/or N10*2 front No. 1 speaker assembly connector.

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

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		Always
    		3.2 to 4.8 Ω
    Result 
    Result
    		Proceed to
    OK
    		A
    NG (for Regular Cab)
    		B
    NG (for Double Cab)
    		C
    NG (for CrewMax)
    		D


B
REPLACE FRONT NO. 1 SPEAKER ASSEMBLY (Click here)

C
REPLACE FRONT NO. 1 SPEAKER ASSEMBLY (Click here)

D
REPLACE FRONT NO. 1 SPEAKER ASSEMBLY (Click here)
A


6.CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)
  1. *1: for RH
  2. *2: for LH

  1. Disconnect the K11*1 and/or K13*2 front No. 2 speaker assembly connector.

  1. Disconnect the M8*1 and/or N10*2 front No. 1 speaker assembly connector.

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

    Standard Resistance:
    for RH:
    Tester Connection
    		Condition
    		Specified Condition
    K11-1 (+) - M8-1
    		Always
    		Below 1 Ω
    K11-2 (-) - M8-2
    		Always
    		Below 1 Ω
    K11-1 (+) - Body ground
    		Always
    		10 kΩ or higher
    K11-2 (-) - Body ground
    		Always
    		10 kΩ or higher
    for LH:
    Tester Connection
    		Condition
    		Specified Condition
    K13-1 (+) - N10-1
    		Always
    		Below 1 Ω
    K13-2 (-) - N10-2
    		Always
    		Below 1 Ω
    K13-1 (+) - Body ground
    		Always
    		10 kΩ or higher
    K13-2 (-) - Body ground
    		Always
    		10 kΩ or higher
    Result 
    Result
    		Proceed to
    OK (for Column Shift Type)
    		A
    OK (for Floor Shift Type)
    		B
    NG
    		C


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


7.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    E146506E19

  1. Disconnect the K11*1 and/or K13*2 front No. 2 speaker assembly connector.

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

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

    Standard Resistance:
    for RH:
    Tester Connection
    		Condition
    		Specified Condition
    1 (+) - 3 (TWR+)
    		Always
    		Below 1 Ω
    2 (-) - 4 (TWR-)
    		Always
    		Below 1 Ω
    for LH:
    Tester Connection
    		Condition
    		Specified Condition
    1 (+) - 3 (TWL+)
    		Always
    		Below 1 Ω
    2 (-) - 4 (TWL-)
    		Always
    		Below 1 Ω
    Text in Illustration 
    *A
    		for RH
    *B
    		for LH
    Result 
    Result
    		Proceed to
    OK (for Column Shift Type)
    		A
    OK (for Floor Shift Type)
    		B
    NG (for Regular Cab)
    		C
    NG (for Double Cab)
    		D
    NG (for CrewMax)
    		E


B
REPLACE NAVIGATION RECEIVER ASSEMBLY (Click here)

C
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY (Click here)

D
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY (Click here)

E
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY (Click here)
A

REPLACE NAVIGATION RECEIVER ASSEMBLY (Click here)  

8.INSPECT REAR NO. 1 SPEAKER ASSEMBLY


    E192950

  1. Disconnect the O1*1 and/or O7*2 rear No. 1 speaker assembly connector.

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

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		Always
    		3.2 to 4.8 Ω
    Result 
    Result
    		Proceed to
    OK
    		A
    NG (for Double Cab)
    		B
    NG (for CrewMax)
    		C


B
REPLACE REAR NO. 1 SPEAKER ASSEMBLY (Click here)

C
REPLACE REAR NO. 1 SPEAKER ASSEMBLY (Click here)
A


9.CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - REAR NO. 1 SPEAKER ASSEMBLY)

  1. Disconnect the K31 navigation receiver assembly connector.

  1. Disconnect the O1*1 and/or O7*2 rear No. 1 speaker assembly connector.

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

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

    Standard Resistance:
    for RH:
    Tester Connection
    		Condition
    		Specified Condition
    K31-1 (RR+) - O1-1
    		Always
    		Below 1 Ω
    K31-3 (RR-) - O1-2
    		Always
    		Below 1 Ω
    K31-1 (RR+) - Body ground
    		Always
    		10 kΩ or higher
    K31-3 (RR-) - Body ground
    		Always
    		10 kΩ or higher
    for LH:
    Tester Connection
    		Condition
    		Specified Condition
    K31-2 (RL+) - O7-1
    		Always
    		Below 1 Ω
    K31-6 (RL-) - O7-2
    		Always
    		Below 1 Ω
    K31-2 (RL+) - Body ground
    		Always
    		10 kΩ or higher
    K31-6 (RL-) - Body ground
    		Always
    		10 kΩ or higher
    Result 
    Result
    		Proceed to
    OK (for Column Shift Type)
    		A
    OK (for Floor Shift Type)
    		B
    NG
    		C


B
REPLACE NAVIGATION RECEIVER ASSEMBLY (Click here)

C
REPAIR OR REPLACE HARNESS OR CONNECTOR
A

REPLACE NAVIGATION RECEIVER ASSEMBLY (Click here)