NSX V6-3.0L DOHC (1991)
12.
Press this sequence of keys on the handset to check the electronic voice groups:
Fcn, 0, 9, 1. Clr
Fcn, 0, 9, 2, Clr
13.
Then, press the Telephone button once.
Does the phone speak?
Yes - Check connections at the control box and transceiver. Make sure the handset is securely plugged into the control box.[ ]
No - Replace the control box.[ ]
The "[ ]" symbol indicates the end of troubleshooting for this symptom.