Inspection Procedure 6

INSPECTION PROCEDURE 6: No Sound from One Speaker. [Vehicles without audio amplifier]

Part 1:

Part 2:

CIRCUIT OPERATION
The speakers sound according to audio signal output from the radio and CD player.

TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty speaker circuit system.

TROUBLESHOOTING HINTS
- Malfunction of the speaker.
- Damaged wiring harness or connector.
- Malfunction of the radio and CD player.

DIAGNOSIS

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?
Tweeter (LH) : Go to Step 2.
Tweeter (RH) : Go to Step 5.
Front door speaker (LH) : Go to Step 8.
Front door speaker (RH) : Go to Step 11.
Rear speaker (LH) : Go to Step 14.
Rear speaker (RH) : Go to Step 17.

STEP 2. Check the tweeter (LH).

1. Remove the tweeter (LH).







2. Check that the tweeter (LH) generates noise when a five-volt voltage is applied on the tweeter (LH) terminal.

Q: Is the tweeter (LH) generating noise?

YES : Go to Step 3.

NO : Replace the tweeter (LH). The tweeter (LH) should sound.

STEP 3. Check tweeter (LH) connector C-129 and radio and CD player connector C-111 for loose, corroded or damaged terminals, or terminals pushed back in the connector.







Q: Are harness connectors C-129 and C-111 in good condition?

YES : Go to Step 4.

NO : Repair or replace the component(s). The tweeter (LH) should sound.

STEP 4. Check the wiring harness between tweeter (LH) connector C-129 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 5 and 13).







- Check the wiring harness for open circuit and short circuit.

Q: Is the wiring harness between tweeter (LH) connector C-129 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 5 and 13) in good condition?

YES : The procedure is complete.

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

STEP 5. Check the tweeter (RH).

1. Remove the tweeter (RH).







2. Check that the tweeter (RH) generates noise when a five-volt voltage is applied on the tweeter (RH) terminal.

Q: Is the tweeter (RH) generating noise?

YES : Go to Step 6.

NO : Replace the tweeter (RH). The tweeter (RH) should sound.

STEP 6. Check tweeter (RH) connector C-108 and radio and CD player connector C-111 for loose, corroded or damaged terminals, or terminals pushed back in the connector.







Q: Are harness connectors C-108 and C-111 in good condition?

YES : Go to Step 7.

NO : Repair or replace the component(s). The tweeter (RH) should sound.

STEP 7. Check the wiring harness between tweeter (RH) connector C-108 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 6 and 14).







- Check the wiring harness for open circuit and short circuit.

Q: Is the wiring harness between tweeter (RH) connector C-108 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 6 and 14) in good condition?

YES : The procedure is complete.

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

STEP 8. Check the front door speaker (LH).

1. Remove the front door speaker (LH).







2. Check that the front door speaker (LH) generates noise when a five-volt voltage is applied on the front door speaker (LH) terminal.

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

YES : Go to Step 9.

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

STEP 9. Check front door speaker (LH) connector E-10 and radio and CD player connector C-111 for loose, corroded or damaged terminals, or terminals pushed back in the connector.







Q: Are harness connectors E-10 and C-111 in good condition?

YES : Go to Step 10.

NO : Repair or replace the component(s). The front door speaker (LH) should sound.

STEP 10. Check the wiring harness between front door speaker (LH) connector E-10 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 5 and 13).







- Check the wiring harness for open circuit and short circuit.







NOTE: Also check intermediate connector C-26 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-26 is damaged, repair or replace the connector.

Q: Is the wiring harness between front door speaker (LH) connector E-10 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 5 and 13) in good condition?

YES : The procedure is complete.

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

STEP 11. Check the front door speaker (RH).

1. Remove the front door speaker (RH).







2. Check that the front door speaker (RH) generates noise when a five-volt voltage is applied on the front door speaker (RH) terminal.

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

YES : Go to Step 12.

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

STEP 12. Check front door speaker (RH) connector E-02 and radio and CD player connector C-111 for loose, corroded or damaged terminals, or terminals pushed back in the connector.







Q: Are harness connectors E-02 and C-111 in good condition?

YES : Go to Step 13.

NO : Repair or replace the component(s). The front door speaker (RH) should sound.

STEP 13. Check the wiring harness between front door speaker (RH) connector E-02 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 6 and 14).







- Check the wiring harness for open circuit and short circuit.

NOTE: Also check intermediate connector C-12 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-12 is damaged, repair or replace the connector.

Q: Is the wiring harness between front door speaker (RH) connector E-02 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 6 and 14) in good condition?

YES : The procedure is complete.

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

STEP 14. Check the rear speaker (LH).

1. Remove the rear speaker (LH).







2. Check that the rear speaker (LH) generates noise when a five-volt voltage is applied on the rear speaker (LH) terminal.

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

YES : Go to Step 15.

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

STEP 15. Check rear speaker (LH) connector D-12 and radio and CD player connector C-111 for loose, corroded or damaged terminals, or terminals pushed back in the connector.







Q: Are harness connectors D-12 and C-111 in good condition?

YES : Go to Step 16.

NO : Repair or replace the component(s). The rear speaker (LH) should sound.

STEP 16. Check the wiring harness between rear speaker (LH) connector D-12 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 2 and 8).







- Check the wiring harness for open circuit and short circuit.

NOTE: Also check intermediate connector C-28 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-28 is damaged, repair or replace the connectors.







Q: Is the wiring harness between the rear speaker (LH) connector D-12 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 2 and 8) in good condition?

YES : Replace the radio and CD player. The rear speaker (LH) should sound.

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

STEP 17. Check the rear speaker (RH).

1. Remove the rear speaker (RH).







2. Check that the rear speaker (RH) generates noise when a five-volt voltage is applied on the rear speaker (RH) terminal.

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

YES : Go to Step 18.

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

STEP 18. Check rear speaker (RH) connector D-09 and radio and CD player connector C-111 for loose, corroded or damaged terminals, or terminals pushed back in the connector.







Q: Are harness connectors D-09 and C-111 in good condition?

YES : Go to Step 19.

NO : Repair or replace the component(s). The rear speaker (RH) should sound.

STEP 19. Check the wiring harness between rear speaker (RH) connector D-09 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 1 and 7).







- Check the wiring harness for open circuit and short circuit.







NOTE: Also check intermediate connector C-28 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-28 is damaged, repair or replace the connectors.

Q: Is the wiring harness between rear speaker (RH) connector D-09 (terminals 1 and 2) and radio and CD player connector C-111 (terminals 1 and 7) in good condition?

YES : Replace the radio and CD player. The rear speaker (RH) should sound.

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