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5. Perform the self-diagnostic function (see SELF-DIAGNOSTIC FUNCTION ). 6. Press the "No. 1" button. Is the low-frequency hum sound heard? YES - Go to step 7. NO - Go to step 29. 7. Check that the low-frequency hum sound continues sounding for about 1 minute. Does the low-frequency hum sound continue sounding for about 1 minute? YES - Go to step 51. NO - Go to step 8. 8. Check for the No. 32 (10A) and the No. 5 (7.5A) ('06-07 models) fuses in the driver's under-dash fuse/relay box. Is the fuse OK? YES - Go to step 9. NO - Replace the fuse, and recheck. 9. Turn the ignition switch to LOCK (0). 10. Disconnect active noise control front microphone connector B (3P) and active noise control rear microphone connector B (3P). 11. Turn the ignition switch ON (II). 12. Measure the voltage between active noise control front and rear microphone connector B (3P) No. 3 terminal and body ground. Fig. 80: Measuring Voltage Between No. 3 Terminal And Body Ground Is there battery voltage?
2007 Acura RL 2005-08 ACCESSORIES AND EQUIPMENT Audio System - RL
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