First Plenum Pull - Code 16 - ZR-1 Net Registry Forums

rebelz · 05-02-2012

What would be the most common cause of a code 16 after a plenum pull to R & R a starter. I get a SES "Code 16" about 2 second after start. If I clear it by removing the battery cable, it resets the next start in the same time frame. If someone could give some advice I would appreciate it. I did have some trouble getting that Da%# rear bolt on connector in place so if the most common cause would be a bent pin I can take it off again, but I don't want to re-pull if I don't need to. I have not yet run through the FSM diagnostics tree, it will take quite a bit of time to get up to speed on the procedure, pin outs etc.
Rich

Ok I pulled the plenum to remove and replace the starter, I did change to a new set of Corvette LT5 plug wires. Of course all of the connectors for the Ignition Module and Coil Packs had to be unplugged. I only had trouble with the one with the 1/4 inch bolt.

ZZZZZR1 · 05-02-2012

hey there,

Please say what you did when you pulled the plenum?

Did you change injectors? Coil packs? Spark plug wires?

I'll let the experts chime in, but they will need what you were working on first.

Did you have issues before the plenum pull?

David

1990 quasar blue · 05-02-2012

I think 16 is drivers side air bag sensor. I'll check the fsm to be sure. Infl rest light on?

tomtom72 · 05-02-2012

DTC 16 is Direct Ignition System fault line circuit. I don't know what that means and I'll go run down the page & report back.

Tom

Okay this is an involved one. two steps into the flow chart if you get a "NO" answer go to DTC 36 flow chart....anyway cut to the chase. You may have put the DIS main connector on upside down and bent a pin. I'll read further and report back again. Peace/out!

RHanselman · 05-02-2012

Sounds like a bent pin in the 40 pin connector...

rebelz · 05-02-2012

Quote:

Originally Posted by tomtom72

DTC 16 is Direct Ignition System fault line circuit. I don't know what that means and I'll go run down the page & report back.

Tom
Okay this is an involved one. two steps into the flow chart if you get a "NO" answer go to DTC 36 flow chart....anyway cut to the chase. You may have put the DIS main connector on upside down and bent a pin. I'll read further and report back again. Peace/out!

Tom
Can the connector actually be bolted in upside down? I didn't turn it over at any time but it was off center to each side more than once during the process of trying to get it into the fitting.
Rich

Z51JEFF · 05-02-2012

Quote:

Originally Posted by rebelz

Tom
Can the connector actually be bolted in upside down? I didn't turn it over at any time but it was off center to each side more than once during the process of trying to get it into the fitting.
Rich

I dont think its possible to put it in upside down,should have guides in the plug allowing installation only one way.

tomtom72 · 05-03-2012

Technically No is the short answer to the question of will it go on upside down.

There is a slot and tab to line up. All I can say for sure that it is possible because I'm the bone head that did it!

among the host of things that can be at issue to get a 16: bad ECM; bad DIS; several bad circuits and bad grounds. Do you have the FSM?

Tom

Z51JEFF · 05-03-2012

One thing to look at on the connector are the 2 plastic push type pins,one on each side of the plug.Could these be there to hold the plug in place while trying to get the 2 bolts started?

rebelz · 05-03-2012

Quote:

Originally Posted by tomtom72

Technically No is the short answer to the question of will it go on upside down.

There is a slot and tab to line up. All I can say for sure that it is possible because I'm the bone head that did it!

among the host of things that can be at issue to get a 16: bad ECM; bad DIS; several bad circuits and bad grounds. Do you have the FSM?

Tom

Yes I have the FSM, I don't see how anyone could work on one of these beasts without it. I'll start the flow chart to see if I can trace it down.
Thanks for all the Fish to all responders. (obscure reference) I'll let you know what I find out.
Rich

05-02-2012	#1
rebelz Join Date: Jul 2007 Location: Anchorage, AK Posts: 106	First Plenum Pull - Code 16 What would be the most common cause of a code 16 after a plenum pull to R & R a starter. I get a SES "Code 16" about 2 second after start. If I clear it by removing the battery cable, it resets the next start in the same time frame. If someone could give some advice I would appreciate it. I did have some trouble getting that Da%# rear bolt on connector in place so if the most common cause would be a bent pin I can take it off again, but I don't want to re-pull if I don't need to. I have not yet run through the FSM diagnostics tree, it will take quite a bit of time to get up to speed on the procedure, pin outs etc. Rich Ok I pulled the plenum to remove and replace the starter, I did change to a new set of Corvette LT5 plug wires. Of course all of the connectors for the Ignition Module and Coil Packs had to be unplugged. I only had trouble with the one with the 1/4 inch bolt. Last edited by rebelz; 05-02-2012 at 08:40 PM. Reason: ZZZZZR1's response

05-02-2012	#2
ZZZZZR1 Banned BANNED Join Date: Oct 2006 Location: MD Posts: 3,674	Re: First Plenum Pull - Code 16 hey there, Please say what you did when you pulled the plenum? Did you change injectors? Coil packs? Spark plug wires? I'll let the experts chime in, but they will need what you were working on first. Did you have issues before the plenum pull? David

05-02-2012	#3
1990 quasar blue Join Date: Feb 2004 Location: Ma Posts: 403	Re: First Plenum Pull - Code 16 I think 16 is drivers side air bag sensor. I'll check the fsm to be sure. Infl rest light on?

05-02-2012	#4
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,609	Re: First Plenum Pull - Code 16 DTC 16 is Direct Ignition System fault line circuit. I don't know what that means and I'll go run down the page & report back. Tom Okay this is an involved one. two steps into the flow chart if you get a "NO" answer go to DTC 36 flow chart....anyway cut to the chase. You may have put the DIS main connector on upside down and bent a pin. I'll read further and report back again. Peace/out! __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member Last edited by tomtom72; 05-02-2012 at 05:46 PM.

05-02-2012	#5
RHanselman Join Date: Jul 2005 Location: Cresson, TX Posts: 970	Re: First Plenum Pull - Code 16 Sounds like a bent pin in the 40 pin connector...

05-03-2012	#8
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,609	Re: First Plenum Pull - Code 16 Technically No is the short answer to the question of will it go on upside down. There is a slot and tab to line up. All I can say for sure that it is possible because I'm the bone head that did it! among the host of things that can be at issue to get a 16: bad ECM; bad DIS; several bad circuits and bad grounds. Do you have the FSM? Tom __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

05-03-2012	#9
Z51JEFF Join Date: Dec 2007 Location: Fremont, CA Posts: 3,093	Re: First Plenum Pull - Code 16 One thing to look at on the connector are the 2 plastic push type pins,one on each side of the plug.Could these be there to hold the plug in place while trying to get the 2 bolts started?