Toyota Corolla Quiz
Diagnostics

No sound is heard from speaker in all modes

In this manual: Diagnostics
Introduction — 31Preparation — 32Service specifications — 19Diagnostics — 497Engine control system — 6Fuel — 13Emission control — 28Exhaust — 3Cooling — 13Lubrication — 7Ignition — 3Starting & charging — 13Front suspension — 12Rear suspension — 9Tire & wheel — 1Drive shaft / propeller shaft — 15Brake — 42Automatic transmission / trans — 47Clutch — 19Steering column — 9Power steering — 11Heater & air conditioner — 20Supplemental restraint system — 27Seat belt — 12Lighting — 18Wiper & washer — 9Audio & visual — 12Wiring — 1Communication system — 1Windshield/windowglass/mirror — 31Seat — 10Theft deterrent & door lock — 10Sliding roof/convertible — 8Engine hood/door — 12Exterior/interior trim — 20Vehicle control system — 1Cruise control — 5Maintenance — 8
13steps
~78min
3/5difficulty
Done 0 of 13
Wiring diagram
Toyota Corolla. Wiring diagram
Inspection procedure 1 Check lcd (liquid crystal display) for lighting
  1. Lcd illumination check
  2. turn the ignition switch acc.
  3. 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
  2. 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
  2. disconnect the connector of the speaker.
  3. resistance check
  4. 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
  2. disconnect the connector of the speaker.
  3. resistance check
  4. 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)
Toyota Corolla. Inspect radio receiver assy
  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

Test yourself

A quick Toyota Corolla quiz: every answer comes with an explanation and a link to the manual page.