Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Audio system / No sound is heard from speaker in all modes

Toyota Corolla (E120): No sound is heard from speaker in all modes

Wiring diagram

Inspection procedure

Inspection procedure

1 Check lcd (liquid crystal display) for lighting

  1. Lcd illumination check
  1.  turn the ignition switch acc.
  2.  Turn the radio receiver assembly on.

    Standard: lcd illumination of the radio receiver assembly light.

2 Control fader and adjust sound balance

2 Control fader and adjust sound balance

  1. Fader and balance adjustment
  1.  operate the radio receiver assembly to adjust the fader and the balance to identify the speaker that does not sound.

3 Inspect front no.1 Speaker assy

3 Inspect front no.1 Speaker assy

  1. Preparation for check
  1.  disconnect the connector of the speaker.
  1.  resistance check
  1.  check the resistance between the terminals of the speaker.

Notice

: the speaker should not be removed for checking.

Standard value: 4 Ω

4 Inspect front no.2 Speaker assy

4 Inspect front no.2 Speaker assy

  1. Check that malfunction disappear when a known good speaker is installed.

    Standard: malfunction disappear.

Hint

: connect the all connectors of speakers.

5 Inspect rear speaker assy

5 Inspect rear speaker assy

  1. Preparation for check
  1.  disconnect the connector of the speaker.
  1.  resistance check
  1.  check the resistance between the terminals of the speaker.

Notice

: the speaker should not be removed for checking.

Standard value: 6 w

6 Check harness and connector(between radio receiver assy and

6 Check harness and connector(between radio receiver assy and speaker)

Check and replace radio receiver assy

Check and replace radio receiver assy

7 Inspect radio receiver assy(+b, acc, gnd)

  1. Check that the continuity between terminals at each condition, as shown in the chart.

Standard:

  1. Check that the voltage between terminals at each condition, as shown in the chart.

Standard:

Repair or replace harness or connector

Repair or replace harness or connector

    Share this page:

    Other materials:

    Inspection procedure
    Hint: if different dtcs related to different systems that have terminal e2 as the ground terminal are output simultaneously, terminal e2 may be open. Read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malf ...

    Circuit description
    Refer to dtc p0120 Dtc no. Dtc detection condition Trouble area P0121 The following condition is met 4 times. After the vehicle speed has exceeded 19 mph (30 km/h) once, the throttle position sensor output value is out of normal range when the throttle ...

    Replacement
    Hint: components: 1. Precaution 2. Disconnect battery negative terminal 3. Remove air bag front rh sensor Disconnect the connector from the airbag front rh sensor.  remove the 2 bolts and airbag front rh sensor. 4. Inspect air bag front rh sensor 5. Install air bag front rh ...