Welcome to our BIG BRONCO site!
TD1 KEY ON ENGINE OFF DIAGNOSTIC TROUBLE CODES (DTCS) 67/634, 522 AND 654
CHECK MANUAL LEVER POSITION (MLP) SENSOR ALIGNMENT
miesk5 Note, as of 1994, the Neutral Safety Switch or Neutral Drive Switch (NDS) is referred to as a Manual Lever Position Sensor (MLPS) or Transmission Range (TR) Sensor.
DTCs 522 and 654
indicate the gear selector was not in Park during Self-Test.
Open or short in harness circuits.
Damaged MLP sensor.
Apply parking brake.
Place transmission in NEUTRAL.
Verify that Manual Lever Position (MLP) Sensor Tool (Rotunda T91P-7010-AHT) or equivalent fits in the appropriate slot.
□miesk5 note, try this test instead of the tool or ask l9cal dealer service if tool is still in usel;
MLPS TEST w/ Connector Pin Diagram w/colors by RLA @ 1993_f_series_mlps_pinout_and_testing_2cb56e2ae312 f5db2a43e732b5c9092d719e2c82
Does the tool fit properly?
Yes REMOVE tool. GO to TD2.
No PLACE the transmission in NEUTRAL. LOOSEN the two MLP sensor mounting bolts. MOVE the sensor to allow insertion of the Transmission Range Sensor Tool in the appropriate slots. TIGHTEN the two mounting bolts to specification. REMOVE tool. VERIFY shift linkage adjustment. CLEAR Continuous Memory (REFER to Quick Test Appendix, Section 5A). RERUN Quick Test.
Shift Cable Adjustment & Indicator Cable Adjustment in 92-96
Shift Cable Adjustment
CAUTION: Under no circumstances should the cable be adjusted in any position other than (D) (overdrive) for the E4OD transmission.
1. From inside the vehicle, place the transmission range selector lever in the OVERDRIVE position (4R70W and E4OD). Hang an improvised three-pound weight (#1) on the transmission range selector lever (#2).
2. Raise vehicle on a hoist and position suitable safety stands under vehicle.
3. Remove the shift cable (#5) from the transmission lever ball stud.
4. Pull down the lock tab on the shift cable body.
5. Position the transmission range selector lever (#2) in the DRIVE position (C6) or the OVERDRIVE position (E4OD). This is three detents from the front-most lever position with the first position counting as one.
6. Connect the cable end fitting to the transmission lever ball stud.
7. Push up on the lock tab to lock the cable in the correctly adjusted position.
8. Remove safety stands and lower vehicle from hoist. Remove the three-pound weight from the transmission range selector lever.
9. After making the adjustment, check for park engagement. Check the transmission range selector lever in all detent positions with the engine (6007) running to make sure correct detent/transmission actions. Readjust if necessary.
Shift Indicator Cable
1. Remove the four screws from the lower steering column shroud. Remove the lower steering column shroud.
2. Rotate transmission range selector lever clockwise until it bottoms out in first gear.
3. Rotate transmission range selector lever counterclockwise three detents (overdrive position).
4. Hang a three pound weight on the transmission range selector lever.
5. Center pointer in the middle of D if equipped with C6 transmission, or (D) if equipped with E4OD transmission, by rotating the thumbwheel located on right-hand side of steering column actuator housing.
See image @ http://web.archive.org/web/201005300...djustments.jpg
TD2 CHECK CONTINUITY OF MLP SENSOR HARNESS CIRCUITS
Disconnect Powertrain Control Module (PCM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.
Disconnect MLP sensor.
Using a mirror, inspect both ends of transmission harness connector at MLP sensor for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.
Install breakout box, leave PCM disconnected.
miesk5 Note This set of tests includes use of Ford's old Break-Out Box; so, as I mentioned in another thread here; In place of the break-out box, go to the EEC connector pin instead; Substitute EEC connector pin Number for breakout box number
EEC IV Connector Pin Diagram
Source: by Ryan M at
EEC IV Connector Pin LEGEND Bronco & Ford Truck & Van: 4.9, 460, 5.0, 5.8;
Source: by Ryan M (Fireguy50) at Ford Fuel Injection
Measure resistance between Test Pin 30 at the breakout box and MLP signal circuit at the MLP sensor vehicle harness connector.
Measure resistance between Test Pin 46 at the breakout box and SIG RTN circuit at the MLP sensor vehicle harness connector.
Is each resistance less than 5.0 ohms?
Yes GO to TD3.
No SERVICE open circuit(s). REMOVE breakout box. RECONNECT all components. RERUN Quick Test.
TD3 CHECK TR CIRCUIT FOR SHORT TO POWER AND GROUND
MLP sensor disconnected.
Breakout box installed, PCM disconnected.
Measure resistance between Test Pin 30 and Test Pins 37/57, 40/60 and 46 at the breakout box.
Measure resistance between Test Pin 30 at the breakout box and chassis ground.
Is each resistance greater than 10,000 ohms?
Yes GO to TD4.
No SERVICE short circuit(s). REMOVE breakout box. RECONNECT all components. RERUN Self Test.
TD4 CHECK TR SENSOR RESISTANCE
Connect MLP sensor.
Breakout box installed, PCM disconnected.
Unlock steering column.
Measure resistance between Test Pin 30 and Test Pin 46 at the breakout box in each gear selector position. Refer to the MLP sensor resistance specification table.
Is each resistance within specification?
REPLACE PCM. REMOVE breakout box. RERUN Self Test.
No REPLACE MLP sensor. REMOVE breakout box. RERUN Self Test.
Was speed control, if equipped recall work completed by dealership? Call local dealer or register and view status @ https://owner.ford.com
; or @ https://vinrcl.safercar.gov/vin/
... have VIN ready.
"Summary: ON CERTAIN PICKUP TRUCKS, PASSENGER VEHICLES, SPORT UTILITY VEHICLES, AND MOTOR HOMES CHASSIS, THE SPEED CONTROL DEACTIVATION SWITCH MAY, UNDER CERTAIN CONDITIONS, LEAK INTERNALLY AND THEN OVERHEAT, SMOKE, OR BURN. THIS COULD RESULT IN AN UNDERHOOD FIRE.
See this guide by jowens1126 to confirm recall status @ https://www.fullsizebronco.com/forum...ml#post6530073
Note that the 93 recall is different than 94-96
Here is the 1995 Bronco Dealer Brochure
For any Bronco questions or to chat about it's planned modifications or build, it's better to post each seperately in Noobie Bronco Tech Questions. Flame free zone. This will get more attention and you can build up your post count to get into other sections such as Bronco and Ford Parts/Accessories (75 posts required to view).
Please fill out your Bronco Info with year, engine size, transmission type, transfer case type (manual or electric shift), locking hub type (automatic or manual) info & major mods such as a Lift, etc. for better responses.
Click User CP
Edit Your Details,
Scroll down to Bronco Info
Forum Common Replies to FAQs @ https://www.fullsizebronco.com/forum...lies-faqs.html
Includes such as:
How to post pics @ How to POST PICTURES - Ford Bronco Forum
We do enjoy Bronco pics!
How to Use Search @ https://www.fullsizebronco.com/forum...-advanced.html
Baba Looey's Favorite FSB Links (lots and lots of tech links) @ https://www.fullsizebronco.com/forum...ech-links.html
... Includes such as, How do I fix my back window?
Free registration for some wiring diagrams (86 through 96) and Technical Service Bulletins, (80 through 96) with Recalls, same as by Ford @ BBB Industries- Premium Alternators, Starters, Power Steering Products | TSB's & Wiring Diagrams
➡️ Try to find time to participate and VOTE
in our Full-Size of the Month (F.O.T.M.) & Full-Size of the Year (F.O.T.Y.) Contests @ https://www.fullsizebronco.com/forum/27-f-o-t-m-voting/
Contests will be held in JANUARY, MARCH, MAY, JULY & SEPTEMBER'S
. Each month in-between will be used for nominating contestants to run in the following Month.
You will get ideas by those competing. Also see the prizes. They are awesome as compared to other sites' "contests"!
Then get ready for the Full-Size of the Year (F.O.T.Y.)⚠️