Audio System Symptom Troubleshooting - No sound is heard from the speaker(s) (display is normal) (without premium audio system)
No Sound is heard from the speaker(s) (display is normal) (without premium audio system)
NOTE:
  1. Turn the ignition switch to ON (II).
  1. Turn on the audio unit and make sure the volume button is not set to the MIN level.
Is it at the MIN level?
YES -
Raise the volume level, and recheck the function.■
NO -
Go to Step 3 .
Do all speakers produce a tone?
YES -
Intermittent failure; the system is OK at this time. Check for poor connections at the audio unit and speakers.
NO -
Go to Step 4 .
  1. Turn the ignition switch to LOCK (0).
  1. Check the speaker with sound for any damage.
Is there any damage?
YES -
Substitute the speaker and recheck.■
NO -
Go to Step 6 .
  1. Remove the speaker(s) with no sound, and disconnect its connector.
  1. Check the speaker 2P connector for a loose or poor connection.
Reconnect the speaker 2P connector and recheck the symptom; does it still fail?
YES -
Go to Step 8 .
NO -
Operation is normal.■
  1. Measure the resistance between the terminals No. 1 and No. 2 of the speaker.
    NOTE: If the problem is in the front door speakers, measure the resistance of the door speaker and the door tweeter.
Is there about 4 Ω?
YES -
Go to Step 9 .
NO -
Replace the faulty speaker(s).■
  1. Remove the audio unit. Disconnect audio unit connector A (24P).
    NOTE: Eject all the CDs before removing the audio unit and CD changer to prevent damaging the CD player's load mechanism.
  1. Check the resistance between the following terminals of audio unit connector A (24P) according to the table.
    Speaker
    Terminal
    Wire color
    Left front door speaker, Left front door tweeter
    A23 (+)
    LT GRN
    A22 (−)
    PNK
    Right front door speaker, Right front door tweeter
    A19 (+)
    GRY
    A18 (−)
    RED
    Left rear speaker
    A11 (+)
    YEL
    A10 (−)
    BRN
    Right rear speaker
    A7 (+)
    BLU
    A6 (−)
    ORN

Is there continuity?
YES -
Go to Step 11 .
NO -
Repair an open in the wires between the audio unit and speaker(s).■
  1. Disconnect the speaker 2P connector.
  1. Check for continuity between audio unit connector A (24P) and body ground according to the table.
    Audio unit connector
    Wire color
    A6
    ORN
    A7
    BLU
    A10
    BRN
    A11
    YEL
    A18
    RED
    A19
    GRY
    A22
    PNK
    A23
    LT GRN

Is there continuity?
YES -
Repair short to body ground in the wire(s) between the audio unit and speaker(s).■
NO -
Substitute a known-good audio unit, and recheck. If the symptom/indication goes away, replace the original audio unit. ■