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Toyota Corolla Repair Manual: Although system is powered,cd cannot be played

Toyota Corolla Repair Manual / Diagnostics / Audio system / Although system is powered,cd cannot be played

Wiring diagram

Inspection procedure

1 Check if a proper cd is inserted

  1. Check that a proper cd is inserted.
  1.  Make sure that the cd is a normal audio cd, and that there is no deformation, flaw, stain, burr and other defects on the cd.

    Standard: normal audio cd.

Reference:

2 Check that a proper cd is inserted

2 Check that a proper cd is inserted

  1. Check that a proper cd is inserted.
  1.  Check whether or not the cd is inserted upside down.

    Standard: not upside down.

3 Disc cleaning

3 Disc cleaning

  1. Disk cleaning
  1.  if the disk gets dirty, clean the disk by wiping the surface from the center to outside in the radial directions with a soft cloth.

Notice

: do not use a conventional record cleaner or anti–static preservative.

4 Replace cd with another and recheck

4 Replace cd with another and recheck

  1. Replace the cd with another and recheck.
  1. Replace the faulty cd with the normal one to see if the same trouble occurs again.

    Standard: malfunction disappear.

5 Check if radio auto–search functions properly

5 Check if radio auto–search functions properly

  1. Check if the radio auto–search function properly.
  1.  Perform the auto–research of the radio and check that the operation is normal.

    Standard: malfunction disappear.

6 Did the temperature in the cabin change rapidly?

6 Did the temperature in the cabin change rapidly?

  1. Did the temperature in the cabin change rapidly?
  1.  Check whether or not the rapid temperature change occurred in the cabin.

    Standard: the rapid temperature change occurred.

    Reference: the rapid temperature change creates condensation inside the cd player, which may disable playing cd.

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

Cd cannot be inserted or is ejected right after insertion
Wiring diagram Inspection procedure 1 Check if a proper cd is inserted Check that a proper cd is inserted.  Make sure that the cd is normal audio cd, and that there is no deformati ...

Cd cannot be taken out
Wiring diagram Inspection procedure 1 Check if radio auto–search functions properly Check if the radio auto–search function properly.  Perform the auto–research of the radio and check ...

Other materials:

Front differential oil seal (atm)
Replacement 1. Remove front wheels 2. Remove engine under cover rh 3. Remove engine under cover lh 4. Drain automatic transaxle fluid  remove the drain plug, gasket and drain atf.  install a new gasket and drain plug. Torque: 17.5 Nvm (178 Kgf·cm, 13 ft·lbf) 5. Remove front ...

How to proceed with troubleshooting
1 Vehicle brought to workshop 2 Customer problem analysis 3 Check and clear dtcs and freeze frame data 4 Problem symptom confirmation Symptom does not occur: go to step 5 Symptom occurs: go to step 6 5 Symptom simulation 6 Dtc check There is no output: go to step 7 There is outp ...

Inspection
1. Intake air flow meter sub–assy Inspect the intake air flow meter resistance.  Using an ohmmeter, measure the resistance between terminals tha and e2. Resistance: at –20 c (–4 f) 13.6 To 18.4 KΩ at 20 c (68 f) 2.21 To 2.69 KΩ at 60 c (140 f) 0.49 To 0.67 KΩ ...

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