Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Audio system / Sound quality is bad only when cd is played(volume is too low)

Toyota Corolla (E120): 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

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    Circuit description
    While driving uphill with cruise control activated, in order to minimize gear shifting and provide smooth cruising overdrive may be prohibited temporarily under some conditions. The cruise control ecu sends o/d cut signals to the ecm as necessary and the ecm cancels overdrive shifting until ...

    Changing the engine switch positions
    1 “LOCK” The steering wheel is locked and the key can be removed. (Vehicles with an automatic transmission or continuously variable transmission: The key can be removed only when the shift lever is in P.) 2 “ACC” Some electrical components such as the audio system can be used. 3 “ON ...

    Inspection procedure
    1 Inspect park/neutral position switch assy Disconnect the park/neutral position switch connector.  measure resistance according to the value(s) in the table below when the shift lever is moved to each position. Standard: 2 Check harness and connector(park/neutral position ...