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Toyota Corolla Repair Manual: Radio broadcast cannot be received (bad reception)

Toyota Corolla Repair Manual / Diagnostics / Audio system / Radio broadcast cannot be received (bad reception)

Inspection procedure

1 Check if radio autosearch functions properly

  1. Check if the radio autosearch functions properly.
  1.  Perform the autosearch of the radio and check that it functions normally.

    Standard: the radio autosearch functions properly.

2 Check optional component

2 Check optional component

  1. Check optional component (sun shade film, telephone antenna etc.).
  1.  Check whether or not any optional component is installed, such as the sunshade film and the telephone antenna, is installed.

    Standard: optional component is installed.

3 Check antenna for noise production

3 Check antenna for noise production

  1. Noise check with antenna
  1.  with the ignition switch in acc, turn on the radio and choose the am mode.
  2.  Place a tip of a screwdriver or the antenna of the antenna assembly w/ holder and check that the noise heard from the speaker.

    Standard: noise occurs.

4 Inspect radio receiver assy(antenna)

4 Inspect radio receiver assy(antenna)

  1. Preparation for check
  1.  remove the antenna plug of the radio receiver assembly.
  1.  noise check
  1.  with the radio receiver assembly connector connected, turn the ignition switch to acc.
  2. Turn on the radio and choose the am mode.
  3.  Place a flathead screwdriver or a metal such as a thin wire on the antenna jack of the radio receiver assembly and check that the noise heard from the speaker.

    Standard: noise occurs.

Replace amplifier antenna assy

Replace amplifier antenna assy

Sound quality is bad in all modes (volume is too low)
Wiring diagram Inspection procedure 1 Adjust sound quality Adjust the sound quality.  Operate the radio receiver assy to adjust the sound quality. Standard: malfunction disappear. ...

Cassette tape cannot be inserted or played
Wiring diagram Inspection procedure 1 Check for any foreign object Check for any foreign object.  Check that no foreign object or defect is detected in the cassette tape player of ...

Other materials:

Circuit description
Hint: these dtcs indicate a malfunction related to the primary circuit. If dtc p0351 is displayed, check the no.1 Ignition coil with igniter circuit. If dtc p0352 is displayed, check the no.2 Ignition coil with igniter circuit. If dtc p0353 is displayed, check the no.3 Ignition coil ...

Sound quality is bad only when playing tape
Inspection procedure 1 Replace cassette tape with another and recheck Replace the cassette tape with another and recheck.  Replace the faulty cassette tape with the normal one to see if the same trouble occurs again. Standard: malfunction disappear. 2 Check for any foreig ...

Bluetooth
■When using the Bluetooth audio system ●In the following situations, the system may not function. The portable player does not support Bluetooth The cellular phone is located outside the service area The Bluetooth device is switched off The Bluetooth device has a low bat ...

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