LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

No power to PCM, HELP!!!

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Old Dec 4, 2006 | 09:22 PM
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19z28camaro02's Avatar
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Exclamation No power to PCM, HELP!!!

With the key on, engine off, the SES light is not illuminated. I have power to all fuses and relays, fusable links are ok. No power to the fuel pump relay or fuel pump. Wiring Diagram for the PCM anyone? Need to figure out which wire to the PCM is power, and no, shoebox doesnt have it.
Old Dec 4, 2006 | 09:28 PM
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ok, shoebox updated recently. But where does the PCM Battery Feed cable, come from. as in where does it hook up to the juice? Wiring schematic would be great here if anyone has one.

Last edited by 19z28camaro02; Dec 4, 2006 at 09:44 PM.
Old Dec 4, 2006 | 10:07 PM
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Do you have any dash lights? The PCM is powered through the ignition switch.
Old Dec 4, 2006 | 10:13 PM
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I do not have power to the pins 15 and 31 on the black connector of the pcm, where do those wires get their power from, i need the wiring diagram for it
Old Dec 4, 2006 | 10:28 PM
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Originally Posted by 19z28camaro02
I do not have power to the pins 15 and 31 on the black connector of the pcm, where do those wires get their power from, i need the wiring diagram for it
PCM BAT fuse. I meant to say previously, that the part of the PCM that powers up when you turn the key is via the ignition switch. The PCM BAT fuse sends power to the PCM at al times. Feeds through the orange wire in cavity C of connector C210 under the RH kick panel.
Old Dec 4, 2006 | 10:36 PM
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i thought that the PCM battery fuse was in the fuse block, or the one on the left of the dash, i dont remember specifically in which location it is at this moment.
Old Dec 4, 2006 | 11:04 PM
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It's in the left side of the dash.
Old Dec 4, 2006 | 11:11 PM
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so the PCM Battery fuse is in the passenger side kicker panel?
Old Dec 4, 2006 | 11:14 PM
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Originally Posted by 19z28camaro02
so the PCM Battery fuse is in the passenger side kicker panel?
Whaaat?? Did you see my previous post? You are not following. The feed passes through the RH kick panel. The fuse is in the fuse block in the dash.
Old Dec 5, 2006 | 07:28 AM
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so then where does the PCM Battery Feed (wires/pin #15 & #31 on the BLACK Cable) come from?
Old Dec 6, 2006 | 05:38 AM
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From the #3 fuse(15amp) in the IP fuse panel. On the orange wire that goes thru connector C210 which is the black 4 pin connector located behind the LH kick panel. Then thru a splice that splits it out to the 2 pins.
Old Dec 6, 2006 | 07:14 AM
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Originally Posted by speedygonzales
From the #3 fuse(15amp) in the IP fuse panel. On the orange wire that goes thru connector C210 which is the black 4 pin connector located behind the LH kick panel. Then thru a splice that splits it out to the 2 pins.
You mean RH kick panel, yes?
Old Dec 6, 2006 | 07:35 AM
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wait, so is it the RH, or the LH, cuz you came off a little sarcastic there and now i'm confused
Old Dec 6, 2006 | 07:56 AM
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Originally Posted by 19z28camaro02
wait, so is it the RH, or the LH, cuz you came off a little sarcastic there and now i'm confused
Dude. If you can't find a single wire with all the help you've been given, you need to take the car somewhere and have somebody work on it for you.
Old Dec 6, 2006 | 07:57 AM
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HEY, one guys saying left, one is saying right, there are smileys coming out of left field!

lemme get this straight, the PCM battery fuse, the wire from that, goes to the RH kicker, correct?



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