Have these three extra wires, where do they go?
- Thread starter Hammer
- Start date
ah.b.normal
Goblin Guru
Have you figured these wires out yet?
Yeah I think it’s the abs, I’m going to remove all the grounds again idk why but still no start and the throttle body doesn’t move either fuel pump is primed and has power but it still won’t turn over and there is stilll a clicking relay on the bcm when I try to start it, I relearned the key too. Not sure what’s going on.
Ark :D
Goblin Guru
Pretty sure those wires have nothing to do with ABS. I don't recall what they are, since I did my harness almost 4 years ago now, but I believe they are addressed in the wiring videos.
No throttle body movement means no data flow to the ECM. Trace your data wires (tan and tan/black twisted pair) from the OBDII port all the way back to the ECM, check continuity. Note, they change to brown for one step of the way, for some reason.
No throttle body movement means no data flow to the ECM. Trace your data wires (tan and tan/black twisted pair) from the OBDII port all the way back to the ECM, check continuity. Note, they change to brown for one step of the way, for some reason.
Chris_WNC
Well-Known Member
Do those go to the little sensor around the key hole?
I'm going by some old photos and I have a red or pink, br/wht, and gr coming from a bundle heading toward the ignition switch. I can't see where it connects going by the photos though. I can look later after I get home from work.
I'm going by some old photos and I have a red or pink, br/wht, and gr coming from a bundle heading toward the ignition switch. I can't see where it connects going by the photos though. I can look later after I get home from work.
Theft Deterrent Control Module (GM name) is a 5 pin connector with 4 wires:
Two wire colors match up, but not the grey. Grey is used for the cruise control wiring, and dash illumination, but those would be smaller wires. That's not a brown wire is it?
Pin | Wire | Circuit | Function |
|---|---|---|---|
1 | 0.35 RD/WH | 1540 | Battery Positive Voltage |
2 | 0.35 BN | 4 | Accessory Voltage Signal |
3 | 0.35 BK/WH | 1051 | Ground |
4 | 0.35 D-GN | 5060 | Low Speed GMLAN Serial Data |
5 | — | — | Not Used |
Two wire colors match up, but not the grey. Grey is used for the cruise control wiring, and dash illumination, but those would be smaller wires. That's not a brown wire is it?
escapepilot
Goblin Guru
That grey wire has me stumped. The color seems wrong - too dark - and it seems to be a different strand than is typically used in auto wiring. It may just be the pic, but it reminds me of the typical spool of wire you get at Lowes.
ah.b.normal
Goblin Guru
Thanks for calling out the tan to brown pair change. I had seen it but didn’t really notice what I was looking at. I thought the twisted pair browns were doing something else. Good to know.
I should say that the above stuff is for a 2008 Cobalt. Other years may differ. But the larger brown wire shown above is documented in a few places in the service stuff. Good to know you have seen it, so the documentation is known to be correct.
Just need to hear back from Hammer, see what he finds.
Just need to hear back from Hammer, see what he finds.
Idk I have the data wires all connected so I’m just stumped at this point.
It looks grey idk man I just can’t believe I can’t the thing to fire just stumped at this point
Idk it looks grey to me it’s looks too light to be brown. Idk what else to check at this point I’ll take all the wiring off and inspect it and see I can figure something out outside of that just confused on if I did something wrong, all good I’m sure I’ll eventually figure it out or I guess I’ll have to get another harness thanks for your help everyone.
Yeah I’m just taking all the wires apart again it’s too hard to see with them on there and connected let you know what I can find, thanks for your help
Traé
Well-Known Member
I have my harness in the basement somewhat unwrapped. I have the green and pink with a white striped pulled near the ignition like you do and labeled “driver mirror turn signal” I have an orange wire with them though. I’ll try to watch through the wiring harness videos again and see if I can remember pulling them together.
