How is the tranny shifting or operating?
Does OD Light blink while driving?
Is Amber ABS Light on too?
You should have only 3 digit codes
526 Neutral Pressure Switch closed or A/C on
528 Clutch Switch Circuit failure (proby
DTCs 522, 525, or 528 resulted from the voltage being high at either:
Pin 10 = A/C input
Pin 30 = PNP/CPP input
while cranking the engine or during Key On Engine Off Diagnostic Test Mode (DTM).
A/C circuit shorted to power.
CPP circuit open.
Starter relay disconnected during Self-Test.
Clutch Pedal Position (CPP) Switch jumper may be off the connector
Wiring Diagram in a 95; from ign switch through CPP to PCM
Starting System Wiring Diagram in a 95; from Ignition Switch through Clutch Pedal Position (CPP) Switch and CPP Jumper to Connector C103F (LH side of engine compartment, top of wheel well, Terminal: 16 Color: BK)
Source: by Seattle FSB (SeattleFSB)
Clutch Pedal Position (CPP) Switch Removal & Connector Pin-Out W/Logic Table & Parts Break-Out Diagrams in 87-96
See my post @ http://fullsizebronco.com/forum/showthread.php?t=201477
for typical PSOM waver testing & info;
For reference purposes:
PSOM Pointer PSOM Pointer Waiver TSB 96-21-11 for 92-96; "..The speedometer needle may waver and or a light surge may occur on some vehicles..." read more
Source: by Ford
This also addresses the tone ring & PSOM unit
EXCERPT; ISSUE: The speedometer needle may waver and/or a light surge may occur on some vehicles when speed control is used at highway speeds between 80-113 km/h (50-70 mph). This may be due to slight dents/chips in either the exciter ring or the Vehicle Speed Sensor (VSS) and air gaps between the VSS and the exciter ring.
ACTION: Replace the Programmable Speedometer/Odometer Module (PSOM) if required. New PSOM's come with increased immunity to system variability. Refer to the following Diagnostic Procedure for details.
BRONCO/F-SERIES - Perform normal PSOM diagnostics per Pinpoint Tests "H" and "J" of the 1996 F-Series/Bronco Body/Chassis Service Manual, Pages 13-01-30 through 13-01-32 and Pinpoint "B" of the 1996 Powertrain/Drivetrain Service Manual, Page 10-03-11.
Any slight dents, chips, etc., in either the exciter ring or VSS will create needle waver. Measure air gap between the VSS and exciter ring. It should be 0.38-0.51mm (0.015-0.020"). Check exciter ring runout per the same ring gear backface runout procedure of the appropriate model 1996 Powertrain/Drivetrain Service Manual, Section 05-00. Make sure the exciter ring is mounted correctly to the ring gear. If runout is more than 0.1mm (0.004"), perform the differential runout check per the procedure in the appropriate model 1996 Powertrain/Drivetrain Service Manual, Section 05-02A or 05-02D, to find cause and repair as needed
Speed Input Signal Test @ PSOM in 93-96 Bronco; "...NOTE: Only wiring harness end of connector is to be probed. * Connect Rotunda Digital Volt-Ohmmeter 014-00407 or equivalent to Pin 4 (speed in ) and Pin 5 (speed in -). * Does the voltage increase smoothly and continuously from 0 to approximately 3.5 volts as vehicle speed increases from 0 to 48 km/h (0 to 30 mph)? OR: If available, a frequency counter may be connected to Pin 4 (Speed in ) and Pin 5 (Speed in -). Does the displayed frequency of the signal increase smoothly and continuously from 0 to approximately 667 Hz at approximately 48 km/h (30 mph)? OR: * If neither a voltmeter nor frequency counter is available, vehicle speed control may be used as a good indicator. If it works normally, then the speedometer module is at least receiving a speed input signal and the wiring and sensor & tone ring can be assumed to be good.
This is tuff to do; suggest using str8 pins to back probe the connector