Inspection Procedure 4
INSPECTION PROCEDURE 4: No Sound from One Speaker.Speaker System Circuit <Vehicles With Amplifier>:
CIRCUIT OPERATION
-
- The sound is heard from the speaker according to audio signal output from the radio and CD player.
-
- The sound signals are sent from the radio, tape player and CD auto changer 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 harness wire or connector.
- Malfunction of the radio and CD player
- Malfunction of the amplifier
- Malfunction of the DIN cable
DIAGNOSIS
STEP 1. Check to see which speaker does not sound. Determine which speaker does not sound.
Q: Which speaker is not sounding?
Door speaker (LH): Go to Step 2.
Door speaker (RH) : Go to Step 6.
Rear speaker (LH): Go to Step 10.
Rear speaker (RH) : Go to Step 14.
Tweeter (LH) : Go to Step 18.
Tweeter (RH) : Go to Step 22.
Center speaker : GO to Step 26.
STEP 2. Check the door speaker (LH).
1. Remove the door speaker (LH).
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.
STEP 3. Check door speaker (LH) connector E-10 and radio and audio amplifier connector D-19 for damage.
Q: Are door speaker (LH) connector E-10 and radio and audio amplifier connector D-19 in good condition?
YES: Go to Step 4.
NO: Repair or replace the connector(s). Refer to Harness Connector Inspection. The door speaker (LH) should sound.
STEP 4. Check the wiring harnesses between door speaker (LH) connector E-10 (terminals 1 and 2) and amplifier connector D-19 (terminals 30 and 23).
NOTE: Also check intermediate connector C-211. If intermediate connector C-211 is damaged, repair or replace the connector as described in Harness Connector Inspection.
Q: Are the wiring harnesses between door speaker (LH) connector E-10 (terminals 1 and 2) and amplifier connector D-19 (terminal 30s and 23) in good condition?
YES: Go to Step 5.
NO: Repair the wiring harness(es). The door speaker (LH) should sound.
STEP 5. Replace the radio and CD player.
Q: Do the speakers sound?
YES: There is no action to be taken.
NO: Repair or replace the amplifier. The front speaker (LH) should sound.
STEP 6. Check the door speaker (RH).
1. Remove the door speaker (RH).
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 7.
NO: Replace the door speaker (RH). The door speaker (RH) should sound.
STEP 7. Check door speaker (RH) connector E-01 and amplifier connector D-19 for damage.
Q: Are door speaker (RH) connector E-01 and amplifier connector D-19 in good condition?
YES: Go to Step 8.
NO: Repair or replace the connector(s). Refer to Harness Connector Inspection. The door speaker (RH) should sound.
STEP 8. Check the wiring harnesses between door speaker (RH) connector E-01 (terminals 1 and 2) and amplifier connector D-19 (terminals 28 and 29).
NOTE: Also check intermediate connector C-213. If intermediate connector C-213 is damaged, repair or replace the connector as described in Harness Connector Inspection.
Q: Are the wiring harnesses between door speaker (RH) connector E-01 (terminals 1 and 2) and amplifier connector D-19 (terminals 28 and 29) in good condition?
YES: Go to Step 9.
NO: Repair the wiring harness(es). The door speaker (RH) should sound.
STEP 9. Replace the radio and CD player.
Q: Do the speakers sound?
YES: There is no action to be taken.
NO: Repair or replace the amplifier. The front speaker (RH) should sound.
STEP 10. 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 11.
NO: Replace the rear speaker (LH). The rear speaker (LH) should sound.
STEP 11. Check rear speaker (LH) connector F-15 and amplifier connector D-19 for damage.
Q: Are rear speaker (LH) connector F-15 and amplifier connector D-19 in good condition?
YES: Go to Step 12.
NO: Repair or replace the connector(s). Refer to Harness Connector Inspection. The rear speaker (LH) should sound.
STEP 12. Check the wiring harness between rear speaker (LH) connector F-15 (terminals 1 and 2) and amplifier connector D-19 (terminals 31 and 32).
NOTE: Also check intermediate connector C-210. If intermediate connector C-210 is damaged, repair or replace the connector as described in Harness Connector Inspection.
Q: Are the wiring harnesses between rear speaker (LH) connector F-15 (terminals 1 and 2) and amplifier connector D-19 (terminals 31 and 32) in good condition?
YES: Go to Step 13.
NO: Repair the wiring harness(es). The rear speaker (LH) should sound.
STEP 13. Replace the radio and CD player
Q: Do the speakers sound?
YES: There is no action to be taken.
NO: Repair or replace the amplifier. The rear speaker (LH) should sound.
STEP 14. 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 15.
NO: Replace the rear speaker (RH). The rear speaker (RH) should sound.
STEP 15. Check rear speaker (RH) connector F-07 and amplifier connector D-19 for damage.
Q: Are rear speaker (RH) connector F-07 and amplifier connector D-19 in good condition?
YES: Go to Step 16.
NO: Repair or replace the connector(s). Refer to Harness Connector Inspection. The rear speaker (RH) should sound.
STEP 16. Check the wiring harnesses between door speaker (RH) connector F-07 (terminals 1 and 2) and audio amplifier connector D-19 (terminals 24 and 25).
NOTE: Also check intermediate connector C-210. If intermediate connector C-210 is damaged, repair or replace the connector as described in Harness Connector Inspection.
Q: Are the wiring harnesses between door speaker (RH) connector F-07 (terminals 1 and 2) and audio amplifier connector D-19 (terminals 24 and 25) in good condition?
YES: Go to Step 17.
NO: Repair the wiring harness(es). The rear speaker (RH) should sound.
STEP 17. Replace the radio and CD player.
Q: Do the speakers sound?
YES: There is no action to be taken.
NO: Repair or replace the amplifier. The rear speaker (RH) should sound.
STEP 18. 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 19.
NO: Replace the tweeter (LH). The tweeter (LH) should sound.
STEP 19. Check tweeter (LH) connector E-08 and amplifier connector D-19 for damage.
Q: Are tweeter (LH) connector E-08 and amplifier connector D-19 in good condition?
YES: Go to Step 20.
NO: Repair or replace the connector(s). Refer to Harness Connector Inspection. The tweeter (LH) should sound.
STEP 20. Check the wiring harnesses between tweeter (LH) connector E-08 (terminals 1 and 2) and amplifier connector D-19 (terminals 27 and 22).
NOTE: Also check intermediate connector C-211. If intermediate connector C-211 is damaged, repair or replace the connector as described in Harness Connector Inspection.
Q: Are the wiring harnesses between tweeter (LH) connector E-08 (terminals 1 and 2) and amplifier connector D-19 (terminals 27 and 22) in good condition?
YES: Go to Step 21.
NO: Repair the wiring harness(es). The tweeter (LH) should sound.
STEP 21. Replace the radio and CD player.
Q: Do the speakers sound?
YES: There is no action to be taken.
NO: Repair or replace the amplifier. The tweeter (LH) should sound.
STEP 22. 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 23.
NO: Replace the tweeter (RH). The tweeter (RH) should sound.
STEP 23. Check tweeter (RH) connector E-03 and amplifier connector D-19 for damage.
Q: Are tweeter (RH) connector E-03 and amplifier connector D-19 in good condition?
YES: Go to Step 24.
NO: Repair or replace the connector(s). Refer to Harness Connector Inspection. The tweeter (RH) should sound.
STEP 24. Check the wiring harnesses between tweeter (RH) connector E-03 (terminals 1 and 2) and amplifier connector D-19 (terminals 21 and 26).
NOTE: Also check intermediate connector C-213. If intermediate connector C-213 is damaged, repair or replace the connector as described in Harness Connector Inspection.
Q: Are the wiring harnesses between tweeter (RH) connector E-03 (terminals 1 and 2) and amplifier connector D-19 (terminals 21 and 26) in good condition?
YES: Go to Step 25.
NO: Repair the wiring harness(es). The tweeter (RH) should sound.
STEP 25. Replace the radio and CD player.
Q: Do the speakers sound?
YES: There is no action to be taken.
NO: Repair or replace the amplifier. The tweeter (RH) should sound.
STEP 26. Check the center speaker.
1. Remove the center speaker.
2. Check that the center speaker generates noise when a five-volt voltage is applied on the center speaker terminal.
Q: Is the center speaker generating noise?
YES: Go to Step 27.
NO: Replace the center speaker. The center speaker should sound.
STEP 27. Check center speaker connector C-07 and amplifier connector D-19 for damage.
Q: Are center speaker connector C-07 and amplifier connector D-19 in good condition?
YES: Go to Step 28.
NO: Repair or replace the connector(s). Refer to Harness Connector Inspection. The tweeter (RH) should sound.
STEP 28. Check the wiring harness between center speaker connector C-07 (terminals 1 and 2) and amplifier connector D-19 (terminals 21 and 26).
Q: Is the wiring harness between center speaker connector C-07 (terminals 1 and 2) and amplifier connector D-19 (terminals 21 and 26) in good condition?
YES: Go to Step 29.
NO: Repair the wiring harness. The center speaker should sound.
STEP 29. Replace the radio and CD player.
Q: Do the speakers sound?
YES: There is no action to be taken.
NO: Repair or replace the amplifier. The tweeter (RH) should sound.