Audio Unit Power Switch Will Not Turn on (No Information Display and No Sound) (08-10 Models)

Audio System Symptom Troubleshooting - Audio unit power switch will not turn on (No information display and no sound) ('08-10 models)

Audio unit power switch will not turn on (No information display and no sound) ('08-10 models)

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.

1. With the ignition switch turned to ON (II), push the audio unit power switch on to see if it turns on.

Does the audio unit display operate properly, and does the audio unit sound normal?

YES -

Intermittent failure, the system is OK at this time.�

NO -

Go to step 2.

2. Make sure the ignition switch is in LOCK (0).

3. Check the No. 5 (10 A) fuse and No. 32 (10 A) fuse in the driver's under-dash fuse/relay box.

Are the fuses OK?

YES -

Go to step 4.

NO -

Replace the fuse, and recheck.�

4. Remove the audio unit Audio Unit Removal/Installation. Check that the audio unit is properly connected.

Is the audio unit connected properly?

YES -

Go to step 5.

NO -

Reconnect the connector, and recheck the function.�

5. Turn the ignition switch to ON (II).

6. Measure the voltage between body ground and audio unit connector A (17P) terminals No. 14 and No. 17 individually.





Is there battery voltage?

YES -

Go to step 7.

NO -

Repair an open in the wire(s) between the No. 5 (10 A) fuse and No. 32 (10 A) in the driver's under-dash fuse/relay box and the audio unit.�

7. Measure the voltage between audio unit connector A (17P) terminal No. 9 and body ground.





Is there less than 0.2 V?

YES -

Replace the audio unit Audio Unit Removal/Installation.�

NO -

Repair an open or high resistance in the wire between audio unit connector A (17P) and body ground (G503).�