AUDIO AND VISUAL SYSTEM > Speaker Circuit

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DESCRIPTION

The radio receiver sends sound signals to the speakers.

WIRING DIAGRAM


I101508E04


INSPECTION PROCEDURE

1.CHECK SPEAKER
  1. Check that the speaker sounds.

    Result 
    Result
    Proceed to
    Front No. 1 speaker does not operate
    A
    Front No. 2 speaker does not operate
    B
    Rear No. 1 speaker does not operate
    C
    All speakers do not operate
    D


B
Go to step 5

C
Go to step 7

D
PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE
A


2.CHECK FRONT NO. 2 SPEAKER ASSEMBLY
  1. Check that the front No. 2 speaker sounds.

    OK:
    Speaker sounds.


NG
Go to step 5
OK


3.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    E110354E03
  1. Disconnect the H6 or G7 receiver connector.

  1. Measure the resistance of the speaker.

Standard resistance:
Tester Connection
Specified Condition
1 (-) - 2 (TWL-)*1 or (TWR-)*2
Below 1 Ω
3 (+) - 4 (TWL+)*1 or (TWR+)*2
Below 1 Ω
1 (-) - Body ground
10 kΩ or higher
3 (+) - Body ground
10 kΩ or higher

HINT:
*1: for LH
*2: for RH


NG
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY
OK


4.CHECK WIRE HARNESS (FRONT NO. 1 SPEAKER - FRONT NO. 2 SPEAKER)


    I101966E04
  1. Disconnect the H1 and H6, or G1 and G7 connectors.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    Specified Condition
    H1-1 - H6-3 (+)
    Below 1 Ω
    H1-1 - Body ground
    10 kΩ or higher
    H1-2 - H6-1 (-)
    Below 1 Ω
    H1-2 - Body ground
    10 kΩ or higher
    G1-1 - G7-3 (+)
    Below 1 Ω
    G1-1 - Body ground
    10 kΩ or higher
    G1-2 - G7-1 (-)
    Below 1 Ω
    G1-2 - Body ground
    10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY 

5.CHECK WIRE HARNESS (RADIO RECEIVER - FRONT NO. 2 SPEAKER)


    I101967E05
  1. Disconnect the E90 receiver connector.

  1. Disconnect the H6 or G7 speaker connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    Specified Condition
    E90-1 (FR+) - G7-4 (TWR+)
    Below 1 Ω
    E90-5 (FR-) - G7-2 (TWR-)
    Below 1 Ω
    E90-1 (FR+) - Body ground
    10 kΩ or higher
    E90-5 (FR-) - Body ground
    10 kΩ or higher
    E90-2 (FL+) - H6-4 (TWL+)
    Below 1 Ω
    E90-6 (FL-) - H6-2 (TWL-)
    Below 1 Ω
    E90-2 (FL+) - Body ground
    10 kΩ or higher
    E90-6 (FL-) - Body ground
    10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


6.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY
  1. Check that the malfunction disappears when another speaker in good condition is installed.

    OK:
    Malfunction disappears.

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


OK
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY
NG

PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE 

7.CHECK WIRE HARNESS (RADIO RECEIVER - REAR NO. 1 SPEAKER)


    I043620E06
  1. Disconnect the E91 receiver connector.

  1. Disconnect the J2 or I2 receiver connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    Specified Condition
    E91-1 (RR+) - I2-1
    Below 1 Ω
    E91-3 (RR-) - I2-2
    Below 1 Ω
    E91-1 (RR+) - Body ground
    10 kΩ or higher
    E91-3 (RR-) - Body ground
    10 kΩ or higher
    E91-2 (RL+) - J2-1
    Below 1 Ω
    E91-6 (RL-) - J2-2
    Below 1 Ω
    E91-2 (RL+) - Body ground
    10 kΩ or higher
    E91-6 (RL-) - Body ground
    10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


8.INSPECT REAR NO. 1 SPEAKER ASSEMBLY
  1. Check the rear No. 1 speaker (Click here).

    OK:
    Rear No. 1 speaker is normal.


NG
REPLACE REAR NO. 1 SPEAKER ASSEMBLY
OK

PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE