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1993 Northstar PCM pin-outs & circuits by AJxtcman
Started on: 02-04-2007 01:55 PM
Replies: 11
Last post by: AJxtcman on 03-07-2007 07:43 AM
AJxtcman
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Report this Post02-04-2007 01:55 PM Click Here to See the Profile for AJxtcmanSend a Private Message to AJxtcmanDirect Link to This Post
I will list more soon
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AJxtcman
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Report this Post02-04-2007 03:03 PM Click Here to See the Profile for AJxtcmanSend a Private Message to AJxtcmanDirect Link to This Post
Ignition circuits
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AJxtcman
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Report this Post02-04-2007 03:14 PM Click Here to See the Profile for AJxtcmanSend a Private Message to AJxtcmanDirect Link to This Post

AJxtcman

1098 posts
Member since Nov 2006
Powertrain System Diagnosis
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redneck56
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Report this Post02-04-2007 04:11 PM Click Here to See the Profile for redneck56Send a Private Message to redneck56Direct Link to This Post
ha AJxtcman
keep the info coming it is helping me wiht the swap that i want to do thanks
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AJxtcman
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Report this Post02-04-2007 10:31 PM Click Here to See the Profile for AJxtcmanSend a Private Message to AJxtcmanDirect Link to This Post
All wire will remain the same if a 4T80E is used EXCEPT the following
Red connector
1A5 - - should have B+ ran to it. The P/S switch is normaly closed in the non high load state.
1B11 -- To the IPC terminal C4. VSS output 4000 pulse per mile.
1B12 -- can be left not used. disconnected
1B16 -- needs to either be connected to a low coolant switch or left not used."disconnected"

[This message has been edited by AJxtcman (edited 02-05-2007).]

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AJxtcman
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Report this Post02-05-2007 07:19 AM Click Here to See the Profile for AJxtcmanSend a Private Message to AJxtcmanDirect Link to This Post
The White connector connect all the same EXCEPT the following
2C6 - This is the Desired Torque Input from the EBTCM / ABS module. Jump this to 3E11 Blue connector.
---------- I have not Verified this. If this does not trick the PCM it will start in 2nd.
2C7 - This is the extended brake switch input. Needs to be jumped to B+ or add a extended brake switch.
2C8 - PASS-Key decoder Fuel enable input. 2.5V? or Run it to A3 of the PK module.
2C12 - Circuit #800 Data line out same as 2C13. Run this to The IPC C2 or any module or ALDL / DLC.
2C13 - Circuit #800 same as above.
2D7 - - Fast Idle Request input from heated windsheild module. Leave disconnected. Not used.
2D10 - Brake booster vacuum input. This may cause 2nd gear starts if not connected.
----------The sensor is mounted on the brake booster and bolted on with the master cylinder.
----------This sensor needs to be teed into the Brake Booster Hose after the check valve.
2D12 - Cruise brake switch. Comes from the cruise switch terminal B to a brake switch.
---------- When the brake switch is depressed and the cruise switch is on you will have B+ at PCM
2D13- TCC brake switch input. This needs to be connected to a brake switch that is closed with no brake
----------and open when the brake pedal is depressed. It will need to have B+ at this terminal with out the brake depresed
2D14 - connect to cruise switch terminal B
2D15 - connect to cruise switch terminal D
2D16 - connect to cruise switch terminal C

[This message has been edited by AJxtcman (edited 02-05-2007).]

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AJxtcman
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Report this Post02-05-2007 07:49 AM Click Here to See the Profile for AJxtcmanSend a Private Message to AJxtcmanDirect Link to This Post

AJxtcman

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Member since Nov 2006
Blue Connector
3E6 - Starter Inhibit output. Run this to the PASS- Key module terminal A7
3E11- Delivered Torque Output. This is the one jumped to the White connector terminal 2C7
3E12- EVAP Purge solenoid. It is mounted to the rear valve cover.
---------One hose connects to the intake port the other side connects to the Charcoal canister of you choice.
3E15- AC clutch relay control. This is a ground circuit to the relay. Page 6E-A-37
3F5 -- SES light run this to terminal A6 if you plan on running the Caddy IPC or needs too be connected to the stock IPC
3F7 -- High speed fan. Can be ran to C500 terminal D2 Lt Green/Black Fan switch (with optional two speed fan only)
3F8 -- Low speed fan. Can be ran to C500 terminal D1 Dk Green/white Fan switch Connect to ECM fan output
3F11 - Lift / dive output to the RSS module. Leave disconnected.
I will add more info on other modules you want to use.
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AJxtcman
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Report this Post02-26-2007 07:06 AM Click Here to See the Profile for AJxtcmanSend a Private Message to AJxtcmanDirect Link to This Post
Reminder to bring home books.
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ray b
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Report this Post02-26-2007 08:04 AM Click Here to See the Profile for ray bSend a Private Message to ray bDirect Link to This Post
thank you for posting all this info

------------------
Question wonder and be wierd
are you kind?

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Deabionni
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Report this Post02-26-2007 08:55 AM Click Here to See the Profile for DeabionniSend a Private Message to DeabionniDirect Link to This Post
Another thread bookmarked!

Thanks for taking the time to post this.
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AJxtcman
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Report this Post02-27-2007 08:10 PM Click Here to See the Profile for AJxtcmanSend a Private Message to AJxtcmanDirect Link to This Post
IPC and data line
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8C1-10

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8C1-11

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8D-3

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Cadillac Tech
ASE MASTER TECH since 1988

86 Northstar Fiero
85 RX7 former SCCA car
56 TR3 small mouth 6.0L
A.J. Whiteley

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AJxtcman
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Report this Post03-07-2007 07:43 AM Click Here to See the Profile for AJxtcmanSend a Private Message to AJxtcmanDirect Link to This Post
What was I requested or do I need to post?

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Cadillac Tech
ASE MASTER TECH since 1988

86 Northstar Fiero
85 RX7 former SCCA car
56 TR3 small mouth 6.0L
A.J. Whiteley

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