IPR Voltage
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
As Tim said, It's a pulse width deal or a duty cyle. The voltage remains the same it just goes on and off. There are no adjustments per se.
Here's is the service manual has to say:
Output Functions
Injection Pressure Regulator (IPR) — A variable position valve that controls injection control pressure. The powertrain control module (PCM) uses many input variables to determine the desired injection control pressure.
Battery voltage is supplied to the IPR when the ignition key is in the ON position. Valve position is controlled by switching the output signal circuit to ground inside the PCM. ON/OFF time is modulated from 0 to 50% dependent upon the desired injection control pressure.
DTC Descriptions P1211 = If set during normal engine operation, indicates engine is operating in open loop control and injection control pressure is above or below desired pressure. If set during KOER test, indicates ICP system failed step test and could not maintain commanded pressure.
P1282 = Injection control pressure was greater than 3675 psi for 1.5 seconds (possible grounded IPR control circuit). Refer to injection control pressure diagnostics if not electronic concern.
P1283 = Output circuit check detected during KOEO test; indicates high or low resistance in circuit
Here's is the service manual has to say:
Output Functions
Injection Pressure Regulator (IPR) — A variable position valve that controls injection control pressure. The powertrain control module (PCM) uses many input variables to determine the desired injection control pressure.
Battery voltage is supplied to the IPR when the ignition key is in the ON position. Valve position is controlled by switching the output signal circuit to ground inside the PCM. ON/OFF time is modulated from 0 to 50% dependent upon the desired injection control pressure.
DTC Descriptions P1211 = If set during normal engine operation, indicates engine is operating in open loop control and injection control pressure is above or below desired pressure. If set during KOER test, indicates ICP system failed step test and could not maintain commanded pressure.
P1282 = Injection control pressure was greater than 3675 psi for 1.5 seconds (possible grounded IPR control circuit). Refer to injection control pressure diagnostics if not electronic concern.
P1283 = Output circuit check detected during KOEO test; indicates high or low resistance in circuit
Hotshot
Joined: Aug 2006
Posts: 10,764
Likes: 39
It sounds like He is getting 12 v W /key on on both wires ,
When running,
PM sends a pulse width ground ,One wire will still be 12 running ,& the other (an unmeasureable pulse)?... ??????
When running,
PM sends a pulse width ground ,One wire will still be 12 running ,& the other (an unmeasureable pulse)?... ??????
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Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
Oh yeah I guess I read that wrong. ok we're still on track I think. Sorry for not being able to read! in order to measure the pulse width you need a scanner to read duty cycle % or a lab scope to measure the oscillation.
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Hotshot
Joined: Aug 2006
Posts: 10,764
Likes: 39
Originally Posted by tjbeggs
Oh yeah I guess I read that wrong. ok we're still on track I think. Sorry for not being able to read! in order to measure the pulse width you need a scanner to read duty cycle % or a lab scope to measure the oscillation.
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
Originally Posted by edo379
well theres 2 powers going in.... a 12 volt, and then a signal wire....i want to know what the signal wire should be.
The other wire, Yellow w/red stripe is the signal side and goes to the PCM
Why? or what are you attempting to do.
If you are having trouble you should describe it.
Hotshot
Joined: Aug 2006
Posts: 10,764
Likes: 39
Originally Posted by tjbeggs
OH yeah. I think I might just quit going home if its wet out! i need a clean truck more than my wife and kids....No wait I guess I can wash my truck a few times a week if need be!
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
Thats a good Idea. doubt my wife will fall for it. She'll tell me to walk in if I don't like it. Then she will tell me to wash her car too! (a side note to those who have no idea what we are talking about. The house I am living in right now is right on the shore of lake michigan but it requires about 2 mile of dirt road to be driven on. So when it rains like yesterday my truck get incredible dirty and I don't like it much!! I was over at Rick's today and he saw my truck)
Now for a more on topic thoughts. Like Jim said, I think it would be good to let us know what your working on with the IPR. Maybe we can help you.
Now for a more on topic thoughts. Like Jim said, I think it would be good to let us know what your working on with the IPR. Maybe we can help you.