Question on diagnostic codes from a 97 civic DX

1st it thru a code 14, which is:
"14 Idle Control System Malfunction - Defective IAC valve, defective fast idle thermo valve, throttle body "

tried it again then it thru code 15, which is:
"15 Ignition Output Signal - Missing, defective or noisy Ignition Output Signal"

any ideas

 

get a book and check the sensor voltage. The sensor's tell all.

 

thanx, i'll try that this weekend...