Won't start in Neutral or Park.

OLDBULL8

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Need a circuit diagram for a 99.5 4R100 trans. The MLPS has 12 contacts and 11 wires hooked to it. I can turn the key on and jump the starter relay and it runs, temporarily run a fused B+ thru a momentary push button to the starter relay. Any suggestions on why the key won't start it. Could the MLPS have gone bad? Hate to buy one and it's not the problem, there expensive, Dealer $84, Auto store is $139.
 

IDIoit

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is it throwing any codes?
my 98 does this, with a lift of the shifter, itll start
 

OLDBULL8

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No codes Brian. Shifter MLPS is right on the neutral mark. I've got wiring diagrams of the E4OD, but not the 4R100

Won't start no matter what I do with the shift lever.
 

trackspeeder

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Yes the DTRS could have gone bad.

Like any sensors, try to use factory parts. Most aftermarket parts suck.

Pin 1 not used.
Pin 2 (GY/RD) Signal return.
Pin 3 (LB/YE) TR#A Signal to PCM.
Pin 4 (YE/BK) TR1 Signal to PCM.
Pin 5 (LB/BK) TR2 Signal to PCM
Pin 6 (WH/BK) TR4Signal to PCM.
Pin 7 (VT/YE) Vehicle Ground.
Pin 8 (RD/WH) NEUTRAL Input.
Pin 9 (LB?PK) Fused Power Feed (Hot in run).
Pin 10 (WH/PK) Starter Relay Enable.
Pin 11 (BK/PK) Starter Relay Enable.
Pin 12(TN/RD) Start Signal From Steering Column. Ignition?Lighting Control Module.


I left out the circuit numbers. Post up if you need them.:D
 

OLDBULL8

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Thanks trackspeeder.
I keep referring to the DTRS as MLPS. Damn digital crap. I think I lost pin #7 the Violet/Yellow ground after checking it out yesterday.
When I first got this truck back in 08, the Gem module kept trying to shift in ?, so had to put a switch on the TC shift motor, worked great, no shifting "EOSF" when I didn't activate it.

Might have done, I don't know what, but I might have shifted it into 4WD Lo with the rear wheels spinning when I was getting the 5er unstuck. Ford says DON'T DO THAT, may take up to 45 seconds to activate, ***.

I've got it out of 4WD now and the Trans, shifts thru all the gears now, but have NO 4WD indication, no indicating lite. Gem gone bad ?.
 
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