Part 1 of 2

Speaker System Circuit <vehicles Without Amplifier> Part 1:

Speaker System Circuit <vehicles With Amplifier> Part 1:

Speaker System Circuit <vehicles With Amplifier> Part 2:

amplifier>
- The sound is heard from the speaker according to audio signal output from the radio and CD player.
- amplifier>
- The sound signals are sent from the radio, and CD player into the amplifier. After the signals are amplified and filtered, the sound signals are sent to the speaker.

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.
- Malfunction of the amplifier .
- Malfunction of the DIN cable amplifier>.

DIAGNOSIS

STEP 1A. Check which speaker has no sound on the vehicles without amplifier?
Use the speaker test to determine which speaker does not sound.

Q: Which speaker has no sound on the vehicles without amplifier?

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

STEP 1B. Check which speaker has no sound on the vehicles with amplifier?
Use the speaker test to determine which speaker does not sound.

Q: Which speaker has no sound on the vehicles with amplifier?

Front Door speaker (LH): Go to Step 20.
Front Door speaker (RH): Go to Step 24.
Rear speaker (LH): Go to Step 28.
Rear speaker (RH): Go to Step 32.
Woofer: Go to Step 36.
Tweeter (LH): Go to Step 40.
Tweeter (RH): Go to Step 44.

STEP 2. 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 3.

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

STEP 3. Check front door speaker (LH) connector E-10 and radio and CD player connector C-22 for damage.

Q: Are harness connectors E-10 and C-22 in good condition?

YES: Go to Step 4.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. The door speaker (LH) should sound.

STEP 4. Check the wiring harness between front door speaker (LH) connector E-10 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 5 and 13).

NOTE: After inspecting intermediate connector C-91, inspect the wire. If intermediate connector C-91 is damaged, repair or replace the wiring harness. Refer to Harness Connector Inspection.

Q: Are the wiring harness between front door speaker (LH) connector E-10 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 5 and 13) in good condition?

YES: Repair or replace the radio and CD player. The front door speaker (LH) should sound.

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

STEP 5. 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 6.

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

STEP 6. Check front door speaker (RH) connector E-01 and radio and CD player connector C-22 for damage.

Q: Are harness connectors E-01and C-22 in good condition?

YES: Go to Step 7.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. The front door speaker (RH) should sound.

STEP 7. Check the wiring harness between front door speaker (RH) connector E-01 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 6 and 14).

NOTE: After inspecting intermediate connector C-95, inspect the wire. If intermediate connector C-95 is damaged, repair or replace the wiring harness. Refer to Harness Connector Inspection.

Q: Are the wiring harness between front door speaker (RH) connector E-01 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 6 and 14) in good condition?

YES: Repair or replace the radio and CD player. The front door speaker (RH) should sound.

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

STEP 8. 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 9.

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

STEP 9. Check rear speaker (LH) connector F-23 or D-22 and radio and CD player connector C-22 for damage.

Q: Are harness connectors F-23 or D-22 and C-22 in good condition?

YES: Go to Step 10.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. The rear speaker (LH) should sound.

STEP 10. Check the wiring harness between rear speaker (LH) connector F-23 (terminal 1 and 2) or D-22 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 2 and 8).

NOTE: After inspecting intermediate connector C-90, inspect the wire. If intermediate connector C-90 is damaged, repair or replace the wiring harness. Refer to Harness Connector Inspection.

Q: Are the wiring harness between the rear speaker (LH) connector F-23 (terminal 1 and 2) or D-22 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 2 and 8) in good condition?

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

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

STEP 11. 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 12.

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

STEP 12. Check rear speaker (RH) connector F-19 or D-21 and radio and CD player connector C-22 for damage.

Q: Are harness connectors F-19 or D-21 and C-22 in good condition?

YES: Go to Step 13.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. The rear speaker (RH) should sound.

STEP 13. Check the wiring harness between rear speaker (RH) connector F-19 (terminal 1 and 2) or D-21 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 1 and 7).

NOTE: After inspecting intermediate connector C-90 inspect the wire. If intermediate connector C-90 is damaged, repair or replace the wiring harness. Refer to Harness Connector Inspection.

Q: Are the wiring harness between rear speaker (RH) connector F-19 (terminal 1 and 2) or D-21 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 1 and 7) in good condition?

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

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

STEP 14. 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 15.

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

STEP 15. Check tweeter (LH) connector E-08 and radio and CD player connector C-22 for damage.

Q: Are harness connectors E-08 and C-22 in good condition?

YES: Go to Step 16.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. The tweeter (LH) should sound.

STEP 16. Check the wiring harness between tweeter (LH) connector E-08 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 5 and 13).

NOTE: After inspecting intermediate connector C-91, inspect the wire. If intermediate connector C-91 is damaged, repair or replace the wiring harness. Refer to Harness Connector Inspection.

Q: Are the wiring harness between tweeter (LH) connector E-08 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 5 and 13) in good condition?

YES: Repair or replace the radio and CD player. The tweeter (LH) should sound.

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

STEP 17. 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 speaker terminal.

Q: Is the tweeter (RH) generating noise?

YES: Go to Step 18.

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

STEP 18. Check tweeter (RH) connector E-03 and radio and CD player connector C-22 for damage.

Q: Are harness connectors E-03 and C-22 in good condition?

YES: Go to Step 19.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. The tweeter (RH) should sound.

STEP 19. Check the wiring harness between tweeter (RH) connector E-03 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 6 and 14).

NOTE: After inspecting intermediate connector C-95, inspect the wire. If intermediate connector C-95 is damaged, repair or replace the wiring harness. Refer to Harness Connector Inspection.

Q: Are the wiring harness between tweeter (RH) connector E-03 (terminal 1 and 2) and radio and CD player connector C-22 (terminal 6 and 14) in good condition?

YES: Repair or replace the radio and CD player. The tweeter (RH) should sound.

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

STEP 20. 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 21.

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

STEP 21. Check front door speaker (LH) connector E-10 and radio and audio amplifier connector D-20 for damage.

Q: Are harness connectors E-10 and D-20 in good condition?

YES: Go to Step 22.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. The door speaker (LH) should sound.

STEP 22. Check the wiring harness between front door speaker (LH) connector E-10 (terminal 1 and 2) and amplifier connector D-20 (terminal 5 and 6).

NOTE: After inspecting intermediate connectors C-91, inspect the wire. If intermediate connectors C-91 is damaged, repair or replace the wiring harness. Refer to Harness Connector Inspection.

Q: Are the wiring harness between door speaker (LH) connector E-10 (terminal 1 and 2) and amplifier connector D-20 (terminal 5 and 6) in good condition?

YES: Go to Step 23.

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

STEP 23. Check the DIN cable between amplifier and radio and CD player.

Q: Is the DIN cable between amplifier and radio and CD player in good condition?

YES: Repair or replace the amplifier or radio and CD player. The front door speaker (LH) should sound.

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

STEP 24. 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 25.

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

STEP 25. Check front door speaker (RH) connector E-01 and amplifier connector D-20 for damage.

Q: Are harness connectors D-20 and E-01 in good condition?

YES: Go to Step 26.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. The front door speaker (RH) should sound.