INSPECTION PROCEDURE 7: No sound from door speaker or woofer. < Vehicles with audio amplifier>: Diagnosis

Required Special Tools: 

• MB991223: Harness set
• MB992006: Extra Fine Probe

1. STEP 1. Check which speaker has no sound on the vehicles with audio amplifier. 

   Determine which speaker does not sound.

   Q: Which speaker does not sound? 

   Door speaker (LH) :  Go to Step  2.

   Door speaker (RH) :  Go to Step  5.

   Woofer :  Go to Step  8.

2. STEP 2. Check the door speaker (LH). 
   1. Remove the door speaker (LH). Refer to < TWEETER/DOOR SPEAKER/QUARTER SPEAKER> .
   2. Check that the door speaker (LH) generates noise when a five-volt voltage is applied on the door speaker (LH) terminal.

   Q: Is the door speaker (LH) generating noise? 

   YES:  Go to Step  3.

   NO:  Replace the door speaker (LH). The door speaker (LH) should sound.

   Fig 1: Checking Speaker

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. STEP 3. Check door speaker (LH) connector E-13 and audio amplifier connector C-114 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

   Q: Are harness connectors E-13 and C-114 in good condition? 

   YES:  Go to Step  4.

   NO:  Repair or replace the component(s). Refer to HARNESS CONNECTOR INSPECTION . The door speaker (LH) should sound.

   Fig 2: Identifying Connector C-114 Terminals

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 3: Locating Door Speaker (LH) Connector E-13

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4. STEP 4. Check the wiring harness between door speaker (LH) connector E-13 (terminals 1 and 2) and audio amplifier connector C-114 (terminals 8 and 18). 
   Fig 4: Identifying Connector C-114 Terminals

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   Fig 5: Locating Door Speaker (LH) Connector E-13

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   NOTE: Also check intermediate connector C-25 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-25 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

   Q: Is the wiring harness between front door speaker (LH) connector E-13 (terminals 1 and 2) and audio amplifier connector C-114 (terminals 8 and 18) in good condition? 

   YES:  Replace the audio amplifier. The door speaker (LH) should sound.

   NO:  Repair the wiring harness. The door speaker (LH) should sound.

   Fig 6: Locating Intermediate Connector C-25

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5. STEP 5. Check the door speaker (RH). 
   1. Remove the door speaker (RH). Refer to < TWEETER/DOOR SPEAKER/QUARTER SPEAKER> .
   2. Check that the door speaker (RH) generates noise when a five-volt voltage is applied on the door speaker (RH) terminal.

   Q: Is the door speaker (RH) generating noise? 

   YES:  Go to Step  6.

   NO:  Replace the door speaker (RH). The door speaker (RH) should sound.

   Fig 7: Checking Speaker

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
6. STEP 6. Check door speaker (RH) connector E-07 and audio amplifier connector C-114 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

   Q: Are harness connectors E-07 and C-114 in good condition? 

   YES:  Go to Step  7.

   NO:  Repair or replace the component(s). Refer to HARNESS CONNECTOR INSPECTION . The door speaker (RH) should sound.

   Fig 8: Identifying Connector C-114 Terminals

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 9: Locating Door Speaker (RH) Connector E-07

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7. STEP 7. Check the wiring harness between door speaker (RH) connector E-07 (terminals 1 and 2) and audio amplifier connector C-114 (terminals 7 and 17). 
   Fig 10: Locating Audio Amplifier Connector C-114 And Intermediate Connector C-09

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   Fig 11: Locating Door Speaker (RH) Connector E-07

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   NOTE: Also check intermediate connector C-09 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-09 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

   Q: Is the wiring harness between front door speaker (RH) connector E-07 (terminals 1 and 2) and audio amplifier connector C-114 (terminals 7 and 17) in good condition? 

   YES:  Replace the audio amplifier. The door speaker (RH) should sound.

   NO:  Repair the wiring harness. The door speaker (RH) should sound.

8. STEP 8. Check the woofer. 
   1. Remove the woofer. Refer to < TWEETER/DOOR SPEAKER/QUARTER SPEAKER> .
   2. Check that the woofer generates noise when a five-volt voltage is applied on the woofer terminal.

   Q: Is the woofer generating noise? 

   YES:  Go to Step  9.

   NO:  Replace the woofer. The woofer should sound.

   Fig 12: Checking Woofer

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9. STEP 9. Check woofer connector D-12 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

   Q: Is harness connector D-12 in good condition? 

   YES:  Go to Step  10.

   NO:  Repair or replace the component(s). Refer to HARNESS CONNECTOR INSPECTION . The woofer should sound.

   Fig 13: Locating Woofer Connector D-12 (Eclipse)

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 14: Locating Woofer Connector D-12 (Eclipse Spyder)

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
10. STEP 10. Check the sub harness between the woofer and the woofer connector. Measure the resistance at woofer connector D-12. 
    NOTE: Check the sub harness with the woofer connected to the sub harness.
    1. Disconnect woofer connector D-12, and measure the resistance available at the component side of the connector.
       Fig 15: Locating Woofer Connector D-12 (Eclipse)

       Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
       Fig 16: Locating Woofer Connector D-12 (Eclipse Spyder)

       Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    2. Measure the resistance between woofer connector D-12 terminals 1 and 2.
       • The resistance should be 2 ohms or less.
    3. Measure the resistance between woofer connector D-12 terminals 3 and 4.
       • The resistance should be 2 ohms or less.

    Q: Is the measured resistance 2 ohms or less? 

    YES:  Go to Step  11.

    NO:  Repair the sub harness. The woofer should sound.

    Fig 17: Measuring Resistance Between Woofer Connector D-12 Terminals 1 And 2

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
11. STEP 11. Check audio amplifier connector C-114 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Is harness connector C-114 in good condition? 

    YES:  Go to Step  12.

    NO:  Repair or replace the component(s). Refer to HARNESS CONNECTOR INSPECTION . The woofer should sound.

    Fig 18: Identifying Connector C-114 Terminals

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
12. STEP 12. Check the wiring harness between woofer connector D-12 (terminals 1, 2, 3 and 4) and audio amplifier connector C-114 (terminals 10, 2, 9 and 1). 
    Fig 19: Locating Audio Amplifier Connector C-114 And Intermediate Connector C-11

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    Fig 20: Locating Woofer Connector D-12 (Eclipse)

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 21: Locating Woofer Connector D-12 (Eclipse Spyder)

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    NOTE: Also check intermediate connector C-11 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-11 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between woofer connector D-12 (terminals 1, 2, 3 and 4) and audio amplifier connector C-114 (terminals 10, 2, 9 and 1) in good condition? 

    YES:  Replace the audio amplifier. The woofer should sound.

    NO:  Repair the wiring harness. The woofer should sound.