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    1986 Mazda Truck B2000 2.0L 2BL SOHC 4cyl

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    405 N COLLEGE ST
    (479) 443-4043

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    Jeep CJ/Scrambler 1971-1986 Repair Guide

    Turn Signal Switch

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    REPLACEMENT



    See Figures 1, 2, 3, 4, 5, 6, 7 and 8

    1971-75 Models

    The turn signal switch is attached to the steering column; the whole unit is mounted externally. To remove the switch assembly, remove the attaching screws, unfasten the wires and remove the unit from the steering column.

    The most frequent causes of failure in the directional signal system are loose connections and burned out bulbs. A flashing rate of approximately twice normal usually indicates a burned out bulb in the circuit. When trouble in the signal switch is suspected, it is advisable to make a few checks to definitely locate the trouble before going tot he effort of removing the signal switch. First check the fuse. There is an in-line fuse located between the ignition switch and the turn signal flasher. If the fuse checks out OK, next eliminate the flasher unit by substituting a known good flasher. If a new flasher does not cure the trouble, check the signal system wiring connections at the fuse and at the steering column connector.

    If the right front parking light and the right rear stop light are inoperative, switch failure is indicated. If the brake lights function properly, the rear signal lights are OK.

    To check the switch on 1971 models, first put the control lever in the neutral position. Then disconnect the wire to the right side circuit and bridge it to the "L" terminal, thus by-passing the signal switch. If the right side circuit lights, the signal switch is inoperative and must be replaced.

    To check out the switch on the 1972 and 1973 models, disconnect the switch at the six wire connector. Use a jumper wire from the white (battery feed) wire to the other wires. Circuitry is as follows:



    White to Orange: Right rear
     
    White to Black: Right front
     
    White to Yellow: Left front
     
    White to Blue: Left rear
     

    If the lights in any of these circuits light then the switch is bad and must be replaced.



    Click image to see an enlarged view

    Fig. Fig. 1: Steering column components used on 1971 models



    Click image to see an enlarged view

    Fig. Fig. 2: Exploded view of the steering column used on 1972-75 models

    1976-79 Models
    1. Disconnect the negative battery cable.
    2.  
    3. Remove the steering wheel.
    4.  
    5. Loosen the anti-theft cover retaining screws on 1976 models and lift the cover from the steering column. It is not necessary to completely remove these screws.
    6.  
    7. Depress the lockplate and pry the round wire snapring from the steering shaft groove. A lockplate compressor tool is available for compressing the lockplate.
    8.  
    9. Remove the lockplate, directional signal canceling cam, upper bearing preload spring, and thrust washer from the steering shaft.
    10.  
    11. Move the directional signal actuating lever to the right turn position and remove the lever.
    12.  
    13. Depress the hazard warning light switch and remove the button by turning it counterclockwise.
    14.  
    15. Remove the directional signal wiring harness connector block from its mounting bracket on the right side of the lower column.
    16.  
    17. On vehicles equipped with an automatic transmission, use a stiff wire, such as a paper clip, to depress the lock tab which retains the shift quadrant light wire in the connector block.
    18.  
    19. Remove the directional signal switch retaining screws and pull the switch and wiring harness from the steering column.
    20.  
    21. Guide the wiring harness of the new switch into position and carefully align the switch assembly. make sure that the actuating lever pivot is correctly aligned and seated in the upper housing pivot boss prior to installing the retaining screws.
    22.  
    23. Install the directional signal lever and actuate the directional signal switch to assure correct operation.
    24.  
    25. Place the thrust washer, spring, and directional signal canceling cam on the upper end of the steering shaft.
    26.  
    27. Align the lockplate splines with the steering shaft splines and place the lockplate in position with the directional signal canceling cam shaft protruding through the dogleg opening in the lockplate.
    28.  
    29. Install the snapring.
    30.  
    31. Install the anti-theft cover.
    32.  
    33. Install the steering wheel and connect the negative battery cable.
    34.  
    35. Check the operation of the turn signal switch.
    36.  



    Click image to see an enlarged view

    Fig. Fig. 3: Exploded view of the steering column assembly used on 1976079 models

    1980-86 Models
    1. Disconnect the battery ground.
    2.  
    3. Cover the painted areas of the column.
    4.  
    5. Remove the column-to-dash bezel.
    6.  
    7. Loosen the toe plate screws.
    8.  
    9. With tilt columns, place the column in the non-tilt position.
    10.  
    11. Remove the steering wheel.
    12.  
    13. Remove the lock plate cover.
    14.  
    15. Compress the lock plate and unseat the steering shaft snapring as follows:
      1. Check the steering shaft nut threads. Metric threads have an identifying groove in the steering wheel splines. SAE threads do not.
      2.  
      3. With SAE threads use a compressor tool such as tool J-23653 to compress the lock plate and remove the snapring.
      4.  
      5. If the shaft has metric threads, replace the forcing screw in the compressor with metric forcing screw J-23653-4 before using.
      6.  

    16.  
    17. Remove the compressor and snapring.
    18.  
    19. Remove the lock plate, canceling cam and upper bearing preload spring.
    20.  
    21. Place the turn signal lever in the right turn position and remove the lever.
    22.  
    23. Remove the hazard warning knob. Press the knob inward and turn counterclockwise to remove it.
    24.  
    25. Remove the wiring harness protectors.
    26.  
    27. Disconnect the wiring harness connectors.
    28.  
    29. Remove the turn signal switch attaching screws and lift out the switch.
    30.  

    To install:
    1. Install the turn signal switch and attaching screws. Torque the screws to 35 inch lbs.
    2.  
    3. Connect the wiring harness connectors.
    4.  
    5. Install the wiring harness protectors.
    6.  
    7. With the turn signal switch in the neutral position, install the hazard warning knob. Press the knob inward and turn clockwise to install it.
    8.  
    9. Install the lever. Torque the attaching screws to 35 inch lbs.
    10.  
    11. Install the upper bearing preload spring.
    12.  
    13. Install the canceling cam.
    14.  
    15. Install the lock plate.
    16.  
    17. Using the compressor, install the snapring.
    18.  
    19. Install the lock plate cover.
    20.  
    21. Install the steering wheel.
    22.  
    23. Loosen the toe plate screws.
    24.  
    25. Install the column-to-dash bezel.
    26.  
    27. Connect the battery ground.
    28.  



    Click image to see an enlarged view

    Fig. Fig. 4: Exploded view of the steering column assembly used on 1980-86 models with a manual transmission



    Click image to see an enlarged view

    Fig. Fig. 5: Using the lock plate spring compressor



    Click image to see an enlarged view

    Fig. Fig. 6: Lockplate components



    Click image to see an enlarged view

    Fig. Fig. 7: Removing the key warning switch buzzer



    Click image to see an enlarged view

    Fig. Fig. 8: Exploded view of the steering column used in 1980-86 models with automatic transmission

     
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