Audio System Symptom Troubleshooting - Power switch will not turn ON (No information display and no sound) (1DIN 1CD type)

Audio System Symptom Troubleshooting - Power switch will not turn ON (No information display and no sound) (1DIN 1CD type)

Power switch will not turn ON (No information display and no sound) (1DIN 1CD type)


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

Does the audio unit operate and sound properly?


YES - Intermittent failure, the system is OK at this time.n


NO - Go to 2.


2.Turn the ignition switch OFF.

3.Check the No. 23 (10 A) fuse in the uncler-hood fuse/relay box and No. 35 (7.5 A) fuse in the under-dash fuse/relay box.

Are the fuses OK?


YES - Go to 4.


NO - Replace the fuse, and recheck.n


4.Remove the audio unit. Check that the audio unit is properly connected.

Is it connected properly?


YES - Go to 5.


NO - Reconnect the connector, and recheck the function.n


5.Disconnect audio unit connector A (20P).

6.Turn the ignition switch ON (II).

7.Measure the voltage between audio unit connector A (20P) terminal No. 2 and body ground, and between terminal No. 10 terminals and body ground.

 

Is there battery voltage on both terminals?


YES - Go to 8.


NO - Repair open in the wire(s) between the No. 23 (10 A) fuse in the under-hood fuse/relay box and No. 35 (7.5 A) in the under-dash fuse/relay box and the audio unit.n


8.Check for voltage between audio unit connector A (20P) No. 20 terminal and body ground.

 

Is there less than 0.1 V?


YES - Replace the audio unit.n


NO - Repair open in the wire between audio unit connector A (20P) No. 20 terminal and body ground (G505).n