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Toyota Corolla Repair Manual: Sound quality is bad only when cd is played(volume is too low)

Toyota Corolla Repair Manual / Diagnostics / Audio system / Sound quality is bad only when cd is played(volume is too low)

Inspection procedure

1 Replace cd with another and recheck

  1. Replace the cd with another and recheck.
  1.  Check the installation condition of the radio receiver assembly.

    Standard: malfunction disappear.

Check and replace radio receiver assy

Check and replace radio receiver assy

Cd cannot be taken out
Wiring diagram Inspection procedure 1 Check if radio autosearch functions properly Check if the radio autosearch function properly.  Perform the autoresearch of the radio and check ...

Cd sound skips
Inspection procedure 1 Disc cleaning Disk cleaning ) if the disk gets dirty, clean the disk by wiping the surface from the center to outside in the radial directions with a soft clo ...

Other materials:

Inspection procedure
1 Check p squib circuit(airbag sensor assy center instrument panel passenger airbag assy) Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the instrument panel pas ...

Inspection procedure
1 Inspect transmission wire(sl) Disconnect the transmission wire connector from the transaxle.  measure the resistance according to the value(s) in the table below. Standard: 2 Check harness and connector(transmission wire ecm) Connect the transmission wire con ...

Inspection
1. Inspect inner rear view mirror assy Inspect the electro chromic inner mirror operation.  Connect the positive (+) lead from the battery to terminal 1 and negative () lead to terminal 2. ) Attach black colored tape to the forward sensor to prevent it from sensing.   ...

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