2001 2500HD

Hey I had the question about the 2001 2500HD, I didn't have the second ignition wire hooked up, so I hooked it up to pin 2 through a relay, and now I have no power to several things on the dash(4x4 switch, cruise, wipers, heater fan, etc.) It also blew the fuses for the remote starter.  Any ideas what I did wrong?Thanks

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Ryan

how did you hook up the relay give detail of pins connections and also are you sure you got the white ignition 12+ wire and not something else???

I hooked up the relay as follows:pin 85 to pin 2 on J2 plug, pin 86 to ground, pin 87 to fused constant 12V , pin 30 to second ignition wire(white 12V small wire from igition harness).  It's like I lost most accessory power.

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Ryan

well it sounds like the relay coil has 2 negative signals which it will not energize to open up is the j2 pin 2 a negative ouput if so then pin 86 on the relay needs to go to 12 volts + not ( - ) also the white wire is approx 14 guage and is right next to the starter wire in the factory connector .

J2 pin is + output

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Ryan

ok so that should work. but you can try to going to 12 v+ and ground with the relay and see if also did you check the wire to make sure it test properly???

When I tested the ignition wires, I have no power on the brown accessory wire or the orange hvac1 wire.  Help!!!!!!!

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Ryan

Here is some more info- when both fuses for constant 12v are in J1 plug and the key is in the "run" position everything works, but the starter runs.  When I take one of the fuses out the gauges work but still no heat or 4x4 switch, when I take the other fuse out the horn goes off with key in "run" position.  Any ideas?

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Ryan

Hey Ryan, can you please enter all the wires that you attached from the CS unit to the colors on the truck ? This way we can trouble shoot better to see if there was a connection  that you used wrong or if you require additional relays or diodes.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

I'm at work now, but I will do that tonight, probably around 8:30 or 9:00.  Thanks for the help guys.

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Ryan

OK here's what I've got:

J1 pin 1-red, pin 2-orange, pin 3-yellow, pin 4-ground, pin 5-pink, pin 6-pink/white.

J2 pin 1-blue @ switch, pin 2-White with relay, pin 3-not used, pin 4-not used, pin 5-to wire at purple plug in BCM, pin 6-not used, pin 7-not used, pin 8-to bypass module, pin 9-at fuse panel, pin 10-at fuse panel, pin 11-black, pin 12-white at brake switch, pin 13-white @ECM, pin 14- hood pin switch.

Bypass module- "true ignition" to pink(same as pin 5 on J1)

the only changes I made after it was working were the second ignition wire(wasn't hooked up)and I moved the true ignition wire from bypass module from yellow wire to pink.

Thanks

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Ryan

Here is what I found to be different about your hook ups:

PINK/WHITE ( P6 ) : Double check to make sure this is a constant wire with a DMM

BLUE (J2 Pin 1 ) This BLUE wire that you attached the WHITE wire to , did you test this for 12 volts when the lights are turned on ? I have this color to be a BROWN wire at the lt. blue plug at BCM ( The BCM is located behind the drivers side of the dash. The plugs on the BCM face towards the rear of the vehicle. The parking lights are in pin A5 and the headlights are in pin A11. )

PURPLE ( J2 Pin 5 ) : This is your disarm (-) output that should be going to a LIGHT GREEN wire in the driver's kick panel. It is also found in the PURPLE PLUG ( not the PURPLE wire ) in the BCM. I think this is your problem here as this affects parts of the BCM that controls various other functions of the interior.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

J2 pin 1 has 12V with parking lights on, J2 pin 5 is hooked to light green wire in purple plug of BCM

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Ryan

One more bit of info-I accidentally grounded the constant 12V wire for the relay for pin 2(second ignition) and everything powered up-starter heater horn etc.  I am lost

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Ryan

Where did you get the 12 volts constant from for that relay that was shorted ? This may be your problem then, not the RS unit. If for any reason a power wire gets shorted to ground, you will get damage in the BCM, ECM or CPU .

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

J1 pin 1-not really shorted just touched to metal

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Ryan

Just wanted to let you know that I finally found the problem.  After checking all my connections and fuses for the 15th time I found the fuse for IGN 2 blown.  Now everything is back to normal.  Hooking up the second ignition wire took care of the security light staying on after remote start, but it still won't shift out of third after remote start.  Passlock bypass resistance is off by .02 ohms-could this cause the shifting problem?

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Ryan

The bypass unit only fools the vehicle into thinking a key is in the key cylinder.  If it is not working properly, the vehicle will not crank and stay running.  Does your check engine light come on at all now?  Did it before?  If so, you may have to visit a dealer and have it reset.  I have heard that if the second ignition wire is not hooked up on these trucks, the ecm will send a code for the torque converter, which could be causing your shifting problems.  I hope this helps.