9. Check for DTCs with the HDS.
Is DTC B1775 or B1776 indicated?
YES -
Troubleshoot the indicated DTC.?
NO -
Go to step 12.
10. Select the Mic in the System Links.
11. Press the TALK button on the steering wheel switch, then check the Mic Level.
Is the microphone level OK?
YES -
Intermittent failure, the system is OK at this time.?
NO -
Replace the HFL-navigation microphone See: Accessories and Optional Equipment/Voice Activation System/Voice Activation
Microphone/Service and Repair/HFL-Navigation Microphone Removal/Installation.?
12. Measure the voltage between body ground and HFL-navigation microphone 7P connector terminals No. 6 and No. 7 individually.
Is there battery voltage?
YES -
Go to step 13.
NO -
Repair an open in the wire(s) between the No. 7 (10 A) fuse in the under-dash fuse/relay box, the
No. 32 (10 A) fuse in the under-dash fuse/relay box and the HFL-navigation microphone.?
13. Measure the voltage between HFL-navigation microphone 7P connector terminal No. 1 and body ground.
Is there less than 0.2 V?
YES -
Replace the HFL-navigation microphone See: Accessories and Optional Equipment/Voice Activation System/Voice Activation
Microphone/Service and Repair/HFL-Navigation Microphone Removal/Installation.?
