Question about 2001 Ford Expedition

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I have a 97 expedition. 4wd did not work

I have a 97 expedition. 4wd did not work sporadicaly. While not working, I tested for power at the transfer case to the engage the 4wd. Had no power going to any terminals other than the 2wd mode. I checked the fuses and relays listed in the owners manual and all are good. removed trim panel on dash with turn nob for 4wd and it was not switching power. replaced it and test drove it and all worked fine. Next day, only 4awd is lighting up and it will no longer shift on the fly as it is supposed to. It feels like 4hi engages but not 4 low. Am I missing something with my diagnoses that maybe I am just reading wrong or should I retest and look at maybe a faulty switch again? Oh yeah, I just did this all with in the last week.

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You can always get a bad switch out of the box, and that is a pretty common problem on thoes vehicles, Id retest the switch as you are thinking before going elsewhere

Posted on Dec 11, 2009

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97' 4wd 4l60e work on 2004 2wd 4l60e


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4 wheel drive actuator


PT 4wd, or AWD?

the car if PT 4wd must not be driving on dry pavement.
only dirt, ice or snow. the reason its called Part time is that fact.
so if PT, and you are on say ice, and the lamp is out.
then the leaver is not working, the lamp does not prove 4wd.
it only proves 1 gear moved to 4wd in the transfer case.
read the FSM on you car, it has all these test.

move car to dirt. grass or ice and try one more time
is the lamp on now, good.
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for 4wd Pt to work the XFR cases need to be in 4wd
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and the front axle must lock up. the fsm has the test for each step.
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I just bought a 2003 superduty crew with a 6.0 diesel it will not go into 4 wheel drive. i have replaced the vacuume pump and the solinoid (they were bad) I have no power to the switch in the dash. i have...


What large square fuse ? The 4X4 switch get's it's B+ voltage from the four - wheel drive control module . computer controlled ! Has two relay's - transfercase hi to low & low to high ,located in the Auxiliary relay box #3 . location left side of radiator core support . Your best bet ,take it to a qualified repair shop that has a diagnostic tool that can communicate with the 4X4 control module . Read code's ! Probably has a code like one of these
P1812 Transmission 4-Wheel Drive Mode Select Circuit Failure 4WD control module Go To Pinpoint Test D . P1815 Transmission 4-Wheel Drive Mode Select Short Circuit to Ground 4WD control module Go To Pinpoint Test A .
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1 Answer

4x4 low light on car will not move


The electronic module (located behind the glove compartment) controls the operation of the transfer case in response to inputs from the electric shift motor, 4x4 mode switch, CPP switch, BPP switch, DTR sensor, throttle position output from the PCM, front and rear OSS sensors, and the VSS. Do you know what DTC'S Are ? Diagnostic trouble codes !

P1804 4WD High Indicator Circuit Failure GEM GO to Pinpoint Test C . P1806 4WD High Indicator Short to Battery GEM GO to Pinpoint Test C . P1808 4WD Low Indicator Circuit Failure GEM GO to Pinpoint Test C . P1810 4WD Low Indicator Short Circuit to Battery GEM GO to Pinpoint Test C . P1812 4WD Mode Select Circuit Failure GEM GO to Symptom Chart. P1815 4WD Mode Select Short Circuit to Ground GEM GO to Symptom Chart. P1820 Transfer Case CW Shift Relay Coil Circuit Open or Short to Ground GEM GO to Pinpoint Test B . P1822 Transfer Case CW Shift Relay Coil Short to Battery GEM GO to Pinpoint Test B . P1824 4WD Electric Clutch Relay Circuit Failure GEM GO to Pinpoint Test A . P1826 4WD Electric Clutch Relay Short to Battery GEM GO to Pinpoint Test A . P1828 Transfer Case CCW Shift Relay Circuit Failure GEM GO to Pinpoint Test B . P1830 Transfer Case CCW Shift Relay Coil Short to Battery GEM GO to Pinpoint Test B . P1836 Transfer Case Front Shaft Speed Sensor Circuit Failure GEM GO to Symptom Chart. P1837 Transfer Case Rear Shaft Speed Sensor Circuit Failure GEM GO to Symptom Chart. P1838 Transfer Case Shift Motor Circuit Failure GEM GO to Pinpoint Test B . P1846 Transfer Case CONTACT PLATE "A" Circuit Failure GEM GO to Pinpoint Test B . P1850 Transfer Case CONTACT PLATE "B" Circuit Failure GEM GO to Pinpoint Test B .

P1854 Transfer Case CONTACT PLATE "C" Circuit Failure (GEM Only) GEM GO to Pinpoint Test B . P1858 Transfer Case CONTACT PLATE "D" Circuit Failure (GEM Only) GEM GO to Pinpoint Test B . P1866 Transfer Case Maintenance Required (GEM Only) (4-wheel drive operation can be restored by clearing the DTC and cycling the ignition.) GEM GO to Pinpoint Test B . P1867 Transfer Case Contact Plate General Circuit Failure (GEM Only) GEM GO to Pinpoint Test B . P1874 Automatic Hall Effect Sensor Power Circuit Failure GEM GO to Symptom Chart. P1875 Automatic Hall Effect Sensor Power Circuit Short to Battery (GEM Only) GEM GO to Symptom Chart. P1891 Transfer Case Contact Plate Ground Return Open Circuit GEM GO to Pinpoint Test B Your best bet , take it to a qualified repair shop

Apr 04, 2017 | 2002 Ford Explorer

2 Answers

Should I drive in a4wd or 2h 2003 expedition


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Apr 17, 2010 | 2003 Ford Expedition

1 Answer

I have a 97 ford expedition eddie bauer an my horn dont work i test the horn and its good i test the wire an there was no power an i dont no were the fuse located at


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Nov 27, 2009 | 1997 Ford Expedition

1 Answer

97 chevy k1500 wil not shift into 4 high, just 4 lo and 2 hi


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1 Answer

Ford 2005 4x4 problem.


2-Speed Torque-On-Demand (TOD) Operation
The automatic 4-wheel drive (A4WD) system is a 2-speed torque-on-demand (TOD) operation that utilizes the following components:
  • Transfer case
  • 4-wheel drive (4WD) control module (integral to the powertrain control module [PCM])
  • Mode select switch (MSS)
  • Gearmotor encoder assembly (part of the transfer case shift motor)
  • Transfer case shift motor
  • Shift motor sense plate (part of the gearmotor encoder assembly)
Principles of Operation
Transfer Case Shift Motor The externally mounted transfer case shift motor, located at the rear of the transfer case, turns the shift cam assembly. As the shift cam assembly turns, it positions the reduction shift fork for desired transfer case operation. An integral position sensor in the shift motor provides shift motor position information to the 4WD control module.
Mode Select Switch (MSS) The push button MSS, mounted on the instrument panel, allows the operator to select the 4x4 Auto, 4x4 High, and 4x4 Low transfer case operating modes. The indicator light, on the instrument cluster push button, will illuminate only when the 4x4 Low position is engaged.
Visual Inspection Chart Mechanical Electrical
  • Axle shafts and CV joints
  • Driveshaft and universal joints
  • Fluid leaks
  • Matching tire sizes
  • Transfer case shift motor
  • Battery junction box (BJB) fuses:
    • 8 (30A)
    • 17 (5A)
    • 18 (20A)
  • Central junction box (CJB) fuses:
    • 12 (5A)
    • 24 (15A)
  • 4x4 module (PCM)
  • Wiring harness
  • Gearmotor encoder contact plate
  • Connector(s)
  • Circuitry
  • Mode indication switch (MSS)

  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. If the concern is not visually evident, connect the diagnostic tool to the data link connector 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:
    • CAN circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
    • No response/not equipped for 4WD module (PCM), Go To Pinpoint Test G .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the 4WD module (PCM) self test.
  1. If the DTCs retrieved are related to the concern, go to the 4WD Control Module (PCM) Diagnostic Trouble Code (DTC) Index to continue diagnostics. 4WD Control Module (PCM) Diagnostic Trouble Code (DTC) Index
    DTC Description Source Action B1317 Battery Voltage HIGH 4WD Module (PCM) REFER to Section 414-00 . B1318 Battery Voltage LOW 4WD Module (PCM) REFER to Section 414-00 . B1319 Driver Door Ajar Circuit Failure 4WD Module (PCM) Go To Pinpoint Test M . B1322 Driver Door Ajar Circuit Short To Ground 4WD Module (PCM) Go To Pinpoint Test M . B1342 ECU is Defective 4WD Module (PCM) CLEAR the DTCs. REPEAT the 4x4 module (PCM) self test. If DTC B1342 is retrieved, INSTALL a new 4x4 module (PCM). REFER to Section 303-14 . CLEAR the DTCs. REPEAT the self test. B1483 Brake Pedal Input Circuit Failure 4WD Module (PCM) Go To Pinpoint Test M . B1485 Brake Pedal Input Short to Battery 4WD Module (PCM) Go To Pinpoint Test M . C1729 Transfer Case Unable to Transition Between 4H and 4L 4WD Module (PCM) Go To Pinpoint Test K . C1970 4WD Low Mode Switch LED Short to Battery 4WD Module (PCM) Go To Pinpoint Test K . C1971 4WD Low Mode Switch LED Circuit Failure 4WD Module (PCM) Go To Pinpoint Test K . P1707 Transfer Case NEUTRAL or PARK/NEUTRAL Indication Circuit 4WD Module (PCM) Go To Pinpoint Test M . P1812 Transmission 4-Wheel Drive Mode Select Circuit Failure 4WD Module (PCM) Go To Pinpoint Test K . P1815 Transmission 4-Wheel Drive Mode Select Short Circuit to Ground 4WD Module (PCM) Go To Pinpoint Test K . P1816 Transmission NEUTRAL Safety Switch Circuit Failure 4WD Module (PCM) Go To Pinpoint Test M . P1819 Transmission NEUTRAL Safety Switch Circuit Short to Ground 4WD Module (PCM) Go To Pinpoint Test M . P1820 Transfer Case Clockwise Shift Relay Coil Circuit Failure 4WD Module (PCM) Go To Pinpoint Test K . P1822 Transfer Case Clockwise Shift Relay Coil Circuit Short To Battery 4WD Module (PCM) Go To Pinpoint Test K . P1824 4-Wheel Drive Clutch Relay Circuit Failure 4WD Module (PCM) Go To Pinpoint Test H . P1826 4-Wheel Drive Low Clutch Relay Short Circuit to Battery 4WD Module (PCM) Go To Pinpoint Test H . P1827 4-Wheel Drive Low Clutch Relay Short Circuit to Ground 4WD Module (PCM) Go To Pinpoint Test H . P1828 Transfer Case Counterclockwise Shift Relay Coil Circuit Failure 4WD Module (PCM) Go To Pinpoint Test K . P1830 Transfer Case Counterclockwise Shift Relay Coil Circuit Short To Battery 4WD Module (PCM) Go To Pinpoint Test K . P1849 Transfer Case Contact Plate A Short Circuit to Ground 4WD Module (PCM) Go To Pinpoint Test K . P1853 Transfer Case Contact Plate B Short Circuit to Ground 4WD Module (PCM) Go To Pinpoint Test K . P1857 Transfer Case Contact Plate C Short Circuit to Ground 4WD Module (PCM) Go To Pinpoint Test K . P1861 Transfer Case Contact Plate D Short Circuit to Ground 4WD Module (PCM) Go To Pinpoint Test K . P1867 Transfer Case Contact Plate General Circuit Failure 4WD Module (PCM) Go To Pinpoint Test K . P1891 Transfer Case Contact Plate Ground Return Open Circuit 4WD Module (PCM) Go To Pinpoint Test K . U1900 CAN Communication BUS Fault 4WD Module (PCM) REFER to Section 418-00 . U2023 External Node Fault 4WD Module (PCM) REFER to Section 418-00 . U2051 One Or More Calibration Files Missing/Corrupt 4WD Module (PCM) Reprogram/Reflash the 4x4 module. REFER to Section 418-00 . - For All Other DTCs 4WD Module (PCM) REFER to Section 418-00 .
  2. Your best bet mite be to take it to a qualified repair shop !

May 30, 2017 | 2005 Ford Explorer

2 Answers

My 1997 ford expedition won't go into 4wd.


You need to specify if it's the high or low 4WD, or both that's the issue. Also, make sure it's not as simple as the indicator light not working but the 4WD is.

I had the same problem on my 2001 Expedition, and it could be a couple of problems. You've eliminated a fuse to the transefr case shift motor, so that's good. If the 4WD system is not used for extended periods it doesn't get oil circulated around the mechanism and it gets stuck. You need to press the 4WD button while the truck is stationary and pull away. You may have to do this a few times until it finally engages. When it kicks in run it in 4WD for a while to give the transfer case a good workout and it should loosen up. Follow the usual precautions about running in 4WD (especially low range) on pavement.

If this doesn't seem to fix the issue, your shift motor that engages the 4WD transfer case may be out. You'll have to get under the vehicle and test for 12V to the shift motor when it's engaged. You may want a dealer to do this for you as getting under a large vehicle when its being put into 4WD is extremely dangerous, even if it's up on stands on 4 corners (which is essential for this as no wheels should touch the ground). I strongly recommend having this done on the correct equipment.

If you have air suspension, as I do, you absolutely must disconnect it from power before propping up your Expedition. If it kicks in, which it can do even when the vehicle is off, it could knock the truck off your stands.

You can disconnect the shift motor electrical connector and test for juice. In all likelyhood, if the first suggestion doesn't free up your 4WD then chances are high that the shift motor is either bad or not getting juice.

You may also want to check the transmission range sensor. If it's faulty then it can prevent the 4WD system from engaging. You can test it as follows: Turn the ignition to "on" but don't start the engine, put the tranny in reverse and see if the back-up lights come on. If they don't, then the sensor is out of alignment or broken. If it's out of alignment, loosening the bolts on the sensor and moving it until the back-up lights come on will fix that. If the back-up lights don't come on even when moving the loosened sensor, then the sensor will need to be replaced. If the back-up lights do work, but either the vehicle won't start in park/neutral, or if it can start in any gear, then it is defective and should be replaced.

Hope this helps.

Dec 21, 2008 | 2001 Ford Expedition

1 Answer

How to replace transfer case shift motor


I have a 1999 f-150. It does not shift into 4WD (hi or low). I checked the fuses and they are ok. I think I may need a new shift motor. Is there a way to test the old motor or should I just replace it? Are there any special instructions for changing the shift motor?

Thank You
Todd

Dec 09, 2008 | 1997 Ford Expedition

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