4R70W shifting/Wiring HELP....

[longboss351]

Hello guys,
Sorry to jump in,, I have learned to much from people on here and The Rangerstation!!
So,, What I have is a 88 Ranger that I put a 98 Explorer motor and trans in. It was a all wheel drive combo. But I have a under drive unit after the 4R70W and a NP 205.

So to clarify that I am using in the Ranger,, 1998 motor and trans with a under drive and a NP 205 transfer case. Now,, with all the issues I have had,, I did get a 1996 motor and trans harness with the matching PCM and VSS sensor. Also the trans range selector switch.. And thanks so so many people it runs!!!But having shifting issues....

Update… I did hook up the VSS in the rear of my np205. Verified pulse.. Took the truck for a drive,, same issue with shifting as before! I found on the Explorer forum that the pins in plug # C111 need to be swapped to match the 98 trans..

So a 96 trans harness is different at plug # C111. So I swapped the pins around from the 96 harness to match the 98 C111. With the 2 power wires not used… Still have a shifting problem.
Also hooked up the TC on/off from plug # C115 42 pin connector, pin 4 brake on/off to a relay so the trans sees ground in normal driving. Then apply brakes and it gets power to kick TC off.. “NOT WORKING”??
Also hooked up pin 12 from C115 “interment cluster” for O/D on and off to a momentary switch to send power to signal the PCM to turn on and off O/D… “also not working” And pin 40 from C115 on a led to indicate O/D off.. “also not working”

HELP!!! Im going crazy!!!! Lol
Thanks for any help or advice,Chris AZ

 

[boominXplorer]

The plug on the passenger side of the transmission is re-pinned between the years. Its the same physical plug but the pins are different. I used a 97 harness with a 98 transmission and just cut the connector off the 98 harness and spliced the wires into the 97 harness.

 

[longboss351]

Wiring update// questions

I did wire mine the same way!!!! Thanks for the reply!!
I do have more questions, I am also posting on the Ranger fourm so sorry if some of these dont make sense... I would really like some one to double look over my work, tell me what you guys think..


42 Pin 1996 plug

Pin...Circuit..Color.................Purpose
1.....16......Red/Lt Green.......PCM Power to relay
2.....11......Tan/Yellow..........tachometer data link
3.....915.....Pink/Lt Blue........Data Link Connector pin 10
4.....511.....Lt Green............Brake On/Off switch
5.....238.....Dk Green/Yellow..Power From Fuel Pump Relay (Fuel pump on signal)
6.....658.....Pink/Lt Green......Malfunction Indicator (CEL)
7.....679.....Gray/Black.........Speed output from VSS
8.....37......Yellow...............Continuous Power
9.....361.....Red..................Fuel Pump relay coil
10.....29.....Yellow/White......Fuel level sender
11....914.....Tan/Orange.......Data Link Connector pin 2
12....224.....Tan/White.........Instrument Cluster
13....676.....Pink/Orange......VSS and PCM Ground
14....91......Purple/White......Canister Vent Solenoid coil
15....926.....Lt Blue/Orange...Fuel Pump relay coil
16....39......Red/White..........Engine temp gauge
17....791.....Red/Pink............Fuel Tank Pressure Transducer (Signal)
18....359.....Gray/Red...........Sensor reference voltage
19....351.....Brown/White......Fuel Tank Pressure Transducer (Power supply)
20....199.....Lt Blue/Yellow....Transmission Controls/Clutch Pedal Position Jumper
21....140.....Black/Pink.........reversing lamps at transmission range sensor
22....107.....Purple..............Data Link Connector Pin 13
23
24....329.....Pink.................starter system at transmission range sensor
25....298.....Purple/Orange....reversing lamps at transmission range sensor
26....253.....Dk Green/White..oil pressure gauge
27....305.....Lt Blue/Pink.......Message Center pin 5
28....394.....Orange/Black.....Automatic ride control module pin 6
29....784.....Lt Blue/Black......4WD Low Range indicator
30....331.....Pink/Yellow........WOT A/C relay coil
31....32......Red/Lt Blue........starter system at transmission range sensor
32
33....463.....Red/White..........Neutral switch for GEM
34....570.....Black/White........Ground
35
36....34......Lt Blue/Orange.....PCM Power from relay
37....198.....Dk Green/Orange..Power to Pin 30 WOT A/C relay
38
39....191.....Lt Green/Black.....Vapor Management Valve coil
40....911.....White/Lt Green....Transmission Control Indicator in dash (overdrive off lamp)
41
42....570.....Black/White.........Ground



Pin 1 is power for the ignition coils, hot in run & start.
Pin 5, hot to fuel pump
Pin 8, continious power
Pin 9 is power for fuel injectors, IAC, & MAF, hot in run & start
pin 15 is fuel pump relay, this turns the fuel pump relay (coil wire) on from the ecu
pin 36 is power to trans & O2 sensors is hot in run.
pin 13,34 and 42 are ground.

pin 4 brake on/off T/C lock out
pin 12 from interment cluster for O/D on and off
pin 40 led to indicate O/D off

If there isn't power going to the solenoids, which includes the EPC, the trans won't act or shift right.

All power going to the trans goes through the EEC relay




Ok,, can you check me to see if these are correct. This is how I have all the wires wired.....
But, I had a thought... Pin 36 is power to trans & 02,, I may not have a good enough power source to power them... After looking at what I am posting,, I am thinking this. I have that hard wired from the 88 Ranger single small wire from org harness. Ill hook up a relay with separate power source...


Also,, I did connect all 3 hot wires at trans together,, no luck there, but if there is not enough power, "like you said or lack of",, this could be the problem...

Also,, do I have a EPC and EEC????? What are they and where are they?? Sorry for the dumb questions, I am still learning but the truck is running now,, just having shifting issues..
Thanks again for everyone's help!!!Chris AZ

 

[TestPoint]

Pin 1 is power for the ignition coils, hot in run & start.
Pin 5, hot to fuel pump
Pin 8, continious power
Pin 9 is power for fuel injectors, IAC, & MAF, hot in run & start
pin 15 is fuel pump relay, this turns the fuel pump relay (coil wire) on from the ecu
pin 36 is power to trans & O2 sensors is hot in run.
pin 13,34 and 42 are ground.

pin 4 brake on/off T/C lock out
pin 12 from interment cluster for O/D on and off
pin 40 led to indicate O/D off

Here are the C115 leads that I found useful in getting my '00 302 connected to a foreign body:

1.) Pin 1 (red/light green) (circuit 16, page 13-16) Ignition coils power
2.) Pin 2 (tan/yellow) (circuit 11, page 62-2) Tachometer
3.) Pin 3 (pink/light blue) (circuit 915, page 25-6) Data port
4.) Pin 4 (red/light green) (circuit 810, pages 30-2, 59-6) Brake torque converter unlock
5.) Pin 5 (dark green/yellow) (circuit 238, page 25-1) Fuel pump on signal
6.) Pin 6 (pink/light green) (circuit 658, page 23-2) Dash MIL/CEL
7.) Pin 8 (yellow) (circuit 37, page 25-1) PCM permanent B+
8.) Pin 9 (red) (circuit 361, page 25-2) Fuel injector/IAC/MASF B+
9.) Pin 11 (tan/orange) (circuit 914, page 25-6) Data Port
10.) Pin 12 (tan/white) (circuit 234, page 30-2) Transmission Control Switch (OD Lock out)
11.) Pin 15 (light blue/orange) (circuit 926, page 25-1) Fuel pump relay
12.) Pin 16 (red/white) (circuit 39, page 62-2) Coolant Temperature Sensor
13.) Pin 22 (violet) (circuit 107, page 14-1, 25-6) PCM reprogramming power from Data Port
14.) Pin 26 (dark green/white) (circuit 253, page 62-2) engine oil sensor
15.) Pin 34 (black/white) (circuit 570, page 10-2) Ground
16.) Pin 36 (light blue/orange) (circuit 34, page 13-5, 25-6) O2 sensor/transmission power
17.) Pin 40 (white/light green) (circuit 911, page 62-6) 'OD OFF' indicator light
18.) Pin 41 (light green/red) (circuit 904, page 12-1) ALT light
19.) Pin 42 (yellow/white) (circuit 36 page 12-1) Alternator power

 

[disciplerocks]

I know this is a bit old but I was wondering if you guys could post the wiring differences between the 96 8 wire range sensor and a 99 12 wire?

I busted mine when pulling out of the donor and picked up a newer one not knowing the wiring was different.

 

[TestPoint]

Here is a link to the wiring harness connector drawing of the 4R70W 1992 to 1997 and 1998 to 2008:

http://www.explorerforum.com/forums/showpost.php?p=3018002&postcount=31

 

[disciplerocks]

Thanks, but those are for the soleniods, not the range sensor.

 

[disciplerocks]

What I got:

 

[TestPoint]

Sorry.

Here is the '98 to '08 schematic and connector pin out. Someone else will have to supply the earlier version.