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Old 04-02-2008   #3
tccrab
 
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Join Date: Oct 2004
Location: Folsom CA
Posts: 1,661
Default Re: trouble with my zr1

Code 61 & 22 are telling you that the secondary solenoid is not functional.

<stolen from a un-named internet forum>
When DTC Code 61 sets, engine rpm is limited to 3K.

A vacuum sensor located under the plenum monitors how much vacuum is applied to the secondary actuators. By monitoring the Vacuum Sensor voltage output, the ECM knows how much vacuum is present.

During Full Power Mode when the secondary solenoid opens, the Secondary vacuum pump turns on at around 41 kPa/ 12hg to supplement engine vacuum. DTC61 will set if the vacuum drops below 21kPa.

During Normal engine power operation DTC 61 will set if any vacuum is present at the secondary valve actuators.

DTC 61 will set
Secondary air inlet valves are commanded closed (Secondary Solenoid closed) and vacuum sensor signal is between .74volts and 4.89 volts.

Secondary air inlet valves are commanded open (Secondary solenoid open) and vacuum sensor signal is less than 1.7 volts.

ECM monitors the secondary valve actuator sensor on the ECM Red connector Pin 12 a Gray/Black wire.

Here is everything you need to know about your secondary port vacuum system:
http://corvetteactioncenter.com/foru...ad.php?t=14272

There is a 10amp fuse in the Instrument Panel fuse block, I don't know exactly which one it is.

TomC

Last edited by tccrab; 04-02-2008 at 07:01 PM.
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