| 1. | With the ignition switch ON (II), push the power switch ON to see if the audio unit turns ON. Does the power turn on by turning the power switch? YES - Operation is normal.n NO - Go to 2. |
| 2. | Turn the ignition switch OFF. Check the No. 5 (7.5A) and No. 32 (7.5A) fuses in the under-dash fuse/relay box. Are they in good condition? YES - Go to 3. NO - Replace the fuses and recheck.n |
| 3. | Remove the audio-HVAC-display module unit. Check the audio unit connector A (20P) is correctly connected. Is it connected properly? YES - Go to 4. NO - Reconnect the connector and recheck the power.n |
| 4. | Measure the voltage between the audio unit connector A10 terminal and body ground. Is there battery voltage? YES - Go to 5. NO - An open circuit or poor wire connection between the under-dash fuse/relay box N11 terminal and audio unit connector A10 terminal.n |
| 5. | Turn the ignition switch ON (II), measure the voltage between the audio unit connector A2 terminal and body ground. Is there battery voltage? YES - Go to 6. NO - An open circuit or poor wire connection between the under-dash fuse/relay box N39 terminal and audio unit connector A2 terminal.n |
| 6. | Check for continuity between the audio unit connector A20 terminal and body ground. Is there continuity? YES - Faulty audio unit.n NO - An open in the wire between the audio unit connector A20 terminal and body ground (G504).n |