Question about 2001 Ford F150 Styleside SuperCrew

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Transmission Control Switch Inoperative...wiring from PCM to switch all good.

2001 F150 5.4L 4R70W Trans Control Switch Inoperative. Trouble shot wiring to PCM...it's all good. Book says hook up 104 pin breakout box....don't have one....not paying for one....out of a job so I'm not going to pay a dealer to fix.....all signs point to PCM but I'm not one to change parts to fix problems....any help would be great . Thanks GW

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  • gwizi812 May 30, 2009

    Thanks....I'll tear into it and see what I find.

  • gwizi812 May 31, 2009

    Thanks Warlock61......I ran the shifter as I checked for continuity at connecter 251 under the dash and found it shorting out in drive. ripped the covers off and found the wire crushed at the base of the shifter....removed repaired and reinstalled the shift handle and wiring. Installed a chafe guard and trimmed the steering cover....no more crushed wiring here!!



    Again...Thanks Dude

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  • Master
  • 659 Answers

If you mean the o/d switch in the shift lever, check for broken wires where the wires come out of the shift lever in the column

Posted on May 30, 2009

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I believe I have a loose/dirty electrical connection related to my cruise control on my 2006 Mercury Milan. Where are the connections exterior of the cab that I can check?


You have no idea what's up , all computer controlled ! The cruise control switches are input's to the PCM - engine computer ! There is no pressure sensor near the master cylinder for the CC . The vehicle has ETC - electronic throttle control . Your best bet ,take it to a qualified repair shop.
Here is a web site for free wiring diagrams http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model an engine size . Under system click on engine ,then under subsystem click speed controls . Click the search button ,then the blue links one at a time .
Speed Control The speed control system consists of the following components:
  • Speed control switches
  • Speed control deactivator switch (part of the stoplamp switch)
  • Stoplamp switch
  • Clutch pedal speed control deactivator switch (manual transaxle)
  • Speed control indicator
  • Powertrain control module (PCM)
Principles of Operation
The speed control system is controlled by the powertrain control module (PCM). The speed control system is designed to maintain a selected vehicle speed between 48-200 km/h (30-124 mph). The speed control system is controlled by the steering wheel mounted switches (ON, OFF, SET+, SET- and RESUME), the stoplamp switch, the clutch pedal speed control deactivator switch (manual transaxle), and the speed control deactivator switch (part of the stoplamp switch). The steering wheel mounted switches are hardwired to the PCM through the clockspring.
The speed control functions include:
  • turning the speed control system on.
  • setting and maintaining the desired vehicle speed.
  • accelerating the vehicle speed.
  • decelerating the vehicle speed.
  • turning the vehicle speed control system off.
  • canceling the speed control.
  • Do you know what DTC'S - diagnostic trouble codes are ?
  • Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index DTCs Description Source Action P0500 Vehicle Speed Error PCM REFER to the Powertrain Control/Emissions Diagnosis (PC/ED) manual. P0579 Cruise Control Multifunction Input A Circuit Range/Performance PCM Go To Pinpoint Test C . P0581 Cruise Control Multifunction Circuit High PCM Go To Pinpoint Test C . P0833 Clutch Pedal Switch B Circuit PCM Go To Pinpoint Test D . P1572 Brake Pedal Switch Circuit PCM Go To Pinpoint Test B . P1703 Brake Switch Out of Self-Test Range PCM Go To Pinpoint Test B . All other DTCs - PCM REFER to the Powertrain Control/Emissions Diagnosis (PC/ED) manual to continue diagnosis. Symptom Chart
    Symptom Chart Condition Possible Sources Action
    • The speed control is inoperative
    • Stoplamp switch
    • Clutch pedal position (CPP) switch
    • Speed control switch
    • Digital transmission range (TR) sensor
    • Vehicle speed signal
    • Powertrain control module (PCM)
    • Go To Pinpoint Test A .

Jul 24, 2017 | Mercury Cars & Trucks

1 Answer

Codes 1826, 1825 and 1819. Car wont start. Do we need to remove trans to reset? Trans was used.


DTC P1819
Internal Mode Switch-No Start/Wrong Range

DTC P1825
Internal Mode Switch - Invalid Range

DTC P1826
Internal Mode Switch C Circuit High Voltage

The transmission internal mode switch (IMS) is a sliding contact switch attached to the selector detent inside the transmission side cover. The four inputs to the PCM indicate the position of the transmission range selector. The input voltage level at the PCM is high (B+) when the IMS is open and low when the switch is closed to ground. The four input parameters represented are Signals A, B, C and P (Parity). Refer to Transmission Internal Mode Switch Logic

Install a Scan Tool . A professional scan tool !
Turn ON the ignition, with the engine OFF.
Important: Before clearing the DTC, use the Scan Tool in order to record the Freeze Frame and Failure Records. Using the Clear Info function erases the Freeze Frame and Failure Records from the PCM.
Record the DTC Freeze Frame and Failure Records.
Clear the DTC.
Select IMS on the Scan Tool .
Place the gear select lever in PARK range, then move to NEUTRAL range.
Does each range selected match the Scan Tool IMS display?
.Replace the lever assembly-manual shaft detent with internal mode switch.
Refer to Transmission Overhaul in the 4T65-E Section of the Transmission Unit Repair Manual.

Mar 15, 2016 | 2001 Buick LeSabre Limited

1 Answer

Why aren't lights for center console on the shifter working?


Could have a wiring problem , a wiring pin backed out of a connector ! If you don't know about automotive electrical an wiring diagrams an electrical wiring trouble shooting I suggest you take it to a ASE certified repair shop .
Instrument Cluster and Panel Illumination The instrument cluster and panel illumination is used to provide backlighting to the instrument panel, switches, and control components when the headlamp switch is in either the PARKING LAMPS ON or HEADLAMPS ON position. The level of intensity is adjustable by pushing the instrument panel dimmer switch either up to increase intensity or down to decrease intensity.
The dimmable backlighting components are:
  • Instrument cluster
  • Hazard switch
  • Rear defroster switch
  • Message center switches
  • Parking aid switch (if equipped)
  • Transmission range selector
  • Fog lamp switch
The non-dimmable backlighting components are:
  • Driver front door lock and power window control switch
  • Passenger front door lock and power window control switch
  • Driver rear door power window control switch
  • Passenger rear door power window control switch
Principles of Operation
The instrument cluster sends a signal to the instrument panel dimmer switch. The instrument cluster provides a variable pulse width modulated (PWM) signal to the dimmable backlighting components in accordance with the position of the instrument panel dimmer switch.
  1. Verify the customer concern.
  1. Visually inspect the following for obvious signs of mechanical or electrical damage.

    Visual Inspection Chart Mechanical Electrical
    • Instrument panel dimmer switch
    • Smart junction box (SJB) fuse(s):
      • 7 (10A)
      • 15 (30A)
    • Circuitry
    • Illumination bulbs
    • Instrument cluster
    • SJB
    1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
    1. NOTE: Make sure to use the latest scan tool release software.
      If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
    1. NOTE: The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.
      If the scan tool does not communicate with the VCM:
      • Check the VCM connection to the vehicle.
      • Check the scan tool connection to the VCM.
      • Refer to Section 418-00 , No Power To The Scan Tool, to diagnose no communication with the scan tool.
    1. If the scan tool does not communicate with the vehicle:
      • Verify the ignition key is in the ON position.
      • Verify the scan tool operation with a known good vehicle.
      • Refer to Section 418-00 to diagnose no response from the powertrain control module (PCM).
    1. Carry out the network test.
      • If the scan tool responds with no communication for one or more modules, refer to Section 418-00 .
      • If the network test passes, retrieve and record the continuous memory DTCs.
    1. Clear the continuous DTCs and carry out the self-test diagnostics for the instrument cluster.
    1. If the DTCs retrieved are related to the concern, go to the Instrument Cluster Diagnostic Trouble Code (DTC) Index. For all other DTCs, refer to Section 419-10 .
    1. If no DTCs related to the concern are retrieved, GO to Symptom Chart .
Symptom Chart Condition Possible Sources Action
  • One or more module-controlled illumination source(s) is inoperative
  • Circuitry
  • Inoperative illumination source component
  • Go To Pinpoint Test A .
A2 CHECK VOLTAGE TO THE INOPERATIVE ILLUMINATION SOURCE
  • Key in OFF position.
  • Disconnect: Inoperative Illumination Source Connector.
  • Key in ON position.
  • Place the headlamp switch in the PARKING LAMPS ON position.
  • Measure the voltage between the inoperative illumination source, harness side and ground according to the following table:

    Illumination Source Connector- Pin Circuit Rear window defrost switch C2340-3 19 (LB/RD) Hazard flasher switch C2039-8 19 (LB/RD) Parking aid disable switch C2339-3 19 (LB/RD) Message center INFO switch C269a-3 19 (LB/RD) Message center SET switch C269b-3 19 (LB/RD) Transmission range selector C2096-4 19 (LB/RD) Fog lamp switch C2341-3 19 (LB/RD)
  • Is the voltage greater than 10 volts?

Feb 02, 2016 | 2008 Mercury Mariner

1 Answer

I have a 2004 Chrysler 300m with a 3.5l engine and getting a 0871 and 0700 code.


Please don't forget to rate!


Trouble Code: P0871 (3.5L V6 VIN G Auto)
A/T O/D Pressure Switch Circuit Malfunction


Trouble Code Conditions:
Engine started; vehicle driven in a forward gear, and the PCM detected that the O/D Pressure Switch circuit indicated open or closed at the wrong time.

Possible Causes:

  • Related DTCs may be present
  • O/D pressure is incorrect, or internal transmission faults exist
  • O/D pressure switch circuit is open, shorted to ground or power
  • O/D pressure switch is damaged or it has failed
  • TCM relay power circuit to O/D switch is open (loss of B+)
  • Intermittent wiring or connector problems exist
  • PCM or TCM has failed


Trouble Code: P0700 (3.5L V6 VIN G Auto)
Automatic Transmission Control System Malfunction


Trouble Code Conditions:
Ignition on or engine started. The PCM received a message over the CCD Bus from the Transmission Control Module (TCM) that it had detected a problem and set a trouble code in memory.

Possible Causes:

  • The presence of this code means the TCM detected a problem
  • TCM related Sensor has solenoid is damaged or has failed
  • This code is for information only - check for other TCM codes
  • TCM or PCM has failed

May 08, 2011 | 2004 Chrysler 300M

1 Answer

Is there more than one sensor on a 1998 transmission f-150 4x4,I have looked up several links an even the dealer,i need the one that helps control ecm module?or is it the one one the rearend.does anyone...


If you put 4R70W into your search ,
you should have all kinds of info
and pictures

Trans sensors are output sensors
They report to the PCM,not control

What is the vehicles problem?

Jan 28, 2011 | 1998 Ford F150 Regular Cab

1 Answer

Code po741 on a cadillac deville dhs 2001


P0741 Torque Converter Clutch Circuit Performance or Stuck Off

Your car actually has a viscous converter clutch inside the torque converter instead of a (mechanical) torque converter clutch to lock up the torque converter for fuel economy improvement. You will see it referred to as the VCC and/or TCC.....

The TCC/VCC has a variety of components in the system including an electrical circuit supplying the transmission, the apply solenoid inside the trans, the torque converter itself, the PCM that controls the apply, etc. It is impossible to diagnose from afar. Unlikely that it is a "sensor" inside the trans as the PCM controls the VCC apply and uses engine and trans data that it receives from a variety of sources. If a "sensor" had failed the trouble code for that sensor would be setting......

Something as simple as the brake switch can cause the VCC to not apply correctly. There is a safety switch on the brake pedal that activates the brake lights and disconnects the VCC circuit. If it is misadjusted then the trans cannot apply the VCC. Lots of other trouble shooting items on the VCC system. If you don't have a service manual and cannot trouble shoot the system, I would recommend a Cadillac dealer as they have the trouble shooting information for the specific VCC that the Cadillac 4T80E trans has that a trans shop is simply not familiar with. No sense working on the trans until you actually know what is wrong.

Jan 13, 2010 | 2001 Cadillac DeVille

1 Answer

Sport trac cruise control works off and on


First thing , knowing what all is involved in the cruise control system helps
Speed Control The speed control system is designed to maintain vehicle speed between 48 and 200 km/h (30 and 125 mph).
Normally, when the brake pedal is applied, the speed control module deactivates the speed control system. Under increased brake pedal effort, the deactivator switch, a normally closed switch, will open and remove power to the speed control actuator clutch, releasing the throttle independently of the speed control module.

Principles of Operation
The brake pedal position (BPP) switch is normally closed to ground. When the brake pedal is applied with the speed control system engaged, the BPP switch closes (to battery voltage), putting the speed control in stand-by mode.
NOTE: A redundant brake deactivator (BPA) switch is provided as an additional safety feature.
NOTE: The speed control module is integral to the powertrain control module (PCM).
The clockspring provides the electrical interface between the steering column wiring and the speed control switches in the steering wheel.
The inputs to the powertrain control module (PCM) required to operate the speed control system are the:
  • anti-lock brake (ABS) module
  • digital transmission range (TR) sensor
  • speed control deactivator switch
  • speed control switches
  • vehicle speed signal (VSS)
The inputs to the speed control actuator come from the powertrain control module (PCM).
The outputs of the speed control actuator go to the speed control cable controlled throttle position sensor.

Special Tool(s) 73III Automotive Meter
105-R0057 or equivalent Worldwide Diagnostic System (WDS)
418-F224,

New Generation STAR (NGS) Tester
418-F052, or equivalent diagnostic tool with appropriate adapter cable
Inspection and Verification
  1. Verify the customer concern.
  1. Verify the speedometer operates correctly without using the speed control by test driving the vehicle. If the speedometer does not operate correctly, refer to Section 413-00 .
  1. Verify the stoplamps operate correctly with the ignition switch in the OFF position. If the stoplamps do not operate correctly, refer to Section 417-01 .
  1. Verify the parking brake is not applied and is operating correctly. If the parking brake is not operating correctly, refer to Section 206-00 .
  1. Visually inspect for obvious signs of mechanical and electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Speed control cable
  • Throttle lever
  • Speed control actuator
  • Battery junction box (BJB) fuse 40 (15A)
  • Circuitry
  • Powertrain control module (PCM)

  1. If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
    • SCP or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
    • No response/not equipped for PCM, Go To Pinpoint Test A .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the KOEO Test.
  1. If the DTCs retrieved are related to the concern, go to the Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index to continue diagnostics.
  1. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.
NOTE: DTC P0703 and DTC P1572 must be repaired before any other DTC.

Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index DTCs Description Source Action P0500 Vehicle Speed Error PCM REFER to the Powertrain Control/Emissions Diagnosis (PC/ED) manual. P1565 Speed Control Command Switches High/Out of Range PCM Go To Pinpoint Test A . P1566 Speed Control Command Switches Low/Out of Range PCM Go To Pinpoint Test B . P1567 Speed Control Output Circuit PCM Go To Pinpoint Test C . P1568 Speed Control Unable to Hold Speed PCM Go To Pinpoint Test D . P1572 Brake On/Off Failure PCM Go To Pinpoint Test E . P0703 Brake Switch Input Malfunction PCM Go To Pinpoint Test E . IF thier are no codes go to the Symptom Chart

Symptom Chart Condition Possible Sources Action
  • No communication with the powertrain control module (PCM)
  • Battery junction box (BJB) fuse(s):
    • 11 (40A)
    • 40 (15A).
  • Circuitry.
  • PCM.
  • REFER to Section 418-00 to continue communication diagnostics.
  • The speed control switch is inoperative - no DTCs
  • Speed control switch.
  • INSTALL a new speed control switch. REFER to Speed Control Switch - With Remote Audio/Climate Controls or Speed Control Switch - Without Remote Audio/Climate Controls in this section.
  • The speed control is inoperative - no DTCs
  • Low battery voltage.
  • Circuitry.
  • Digital transmission range (TR) sensor (automatic transmission only).
  • Parking brake switch.
  • Go To Pinpoint Test F .
  • The speed control indicator lamp is always on
  • Circuitry.
  • Instrument cluster.
  • Powertrain control module (PCM).
  • Go To Pinpoint Test G .

Jul 07, 2017 | 2003 Ford Explorer Sport Trac

4 Answers

No reverse lights, bulbs are good. 1996 F250 5speed


If there is no power at socket, check for a blown fuse, if fuse is good still check it for power, you can check the b/u switch on the trani, I think your is part of the neutral safety switch,do a wiggle check( might be able to see a loose connection) do it with key on wheels chocked and/or E-brake applied,and the trani in reverse. the truck does not have to be running. Just the key in the run position. and you can check for continuity(good ground) at socket. Good luck.

Apr 28, 2009 | 1996 Ford F250 Crew Cab

3 Answers

1999 ford expedition - transmission slip?


the flashing O/D light usually means you have a bad speed sensor that sends speed info to the engine & trans computer.

Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 42) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.
-------------------------------------------------------------------
Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 42) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.

-------------------------------------------
Some trans use an OSS, Output Shaft Sensor instead of a VSS. Depends on which trans you have, 4R100 or 4R70W

Transmission Control Switch (TCS) and Transmission Control Indicator Lamp (TCIL)
The transmission control switch (TCS) is a momentary contact switch. When the switch is pressed, a signal is sent to the powertrain control module (PCM) to allow automatic shifts from first through fourth gears or first through third gears only. The PCM energizes the transmission control indicator lamp (TCIL) when the switch is off.

The TCIL indicates overdrive cancel mode activated (lamp on) and electronic pressure control (EPC) circuit shorted (lamp flashing) or monitored sensor failure.

Output Shaft Speed (OSS) Sensor
The output shaft speed (OSS) sensor is a magnetic pickup, located at the output shaft ring gear, that sends a signal to the powertrain control module (PCM) to indicate transmission output shaft speed. The OSS is used for torque converter clutch control, shift scheduling and to determine electronic pressure control.

Apr 18, 2009 | 1998 Ford Expedition

1 Answer

Where is transmission drain plug 2001 FRD Explorer Sport


2001 Ford Explorer,depending on the engine option,will have either a 4R70W or 5R55E model transmission.Neither trans has a drain or fill plug in the pan or case.Changing the fluid is achieved either by removing all the pan bolts,removing the pan and fluid,then reinstalling and adding fluid through the filler tube,or by a shop that has a total flush machine that usually hooks into the cooler lines.I also change the filter on both transmissions as part of the fluid service.The 4R70W trans has a gasket that is reuseable for the life of the vehicle.The 5R55E pan requires a new gasket if dropping the pan.

Jul 17, 2008 | 2001 Ford Explorer Sport

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