ISUZU Amigo/Pick-ups/Rodeo/Trooper 1981-1996

Turn Signal (Combination) Switch

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REMOVAL & INSTALLATION



Except Hombre
WITHOUT AIR BAG

See Figure 1



Click image to see an enlarged view

Fig. Fig. 1: Combination switch and steering components-Amigo

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the steering wheel. Refer to the procedure in this section.
  4.  

Do not strike the steering column or use air tools to loosen the steering wheel nut. The impact may damage the steering column's energy-absorbing properties.

  1. Remove the steering column upper and lower covers. Remove the horn contact ring.
  2.  
  3. Remove the turn signal canceling sleeve.
  4.  
  5. Disconnect the harnesses from the combination switch.
  6.  
  7. Remove the combination switch-to-steering column screws. Then, remove the switch.
  8.  

On vehicles equipped with cruise control, the cruise control switch is an integral part of the combination switch.

To install:
  1. Install the combination switch to the steering column and secure it with the retainer screws.
  2.  
  3. Connect the combination switch harness.
  4.  
  5. Install the steering column upper and lower covers.
  6.  
  7. Install the contact ring.
  8.  
  9. Install the steering wheel and horn pad.
  10.  
  11. Connect the negative battery cable.
  12.  
  13. Check both the combination switch and horn functions before driving the vehicle.
  14.  

WITH AIR BAG

See Figure 2



Click image to see an enlarged view

Fig. Fig. 2: Air bag equipped combination switch and steering wheel components

1995 models are available with and without dual Air Bags. Air Bags were added as standard equipment during the middle of the year's production run. Air Bag equipped vehicles may be referred to as 19951/2models in parts and service listings.


CAUTION
The Air Bag system must be disabled before the steering wheel and combination switch are removed. Failure to disable the system may result in repairs and possible personal injury. Do not damage, cut, or attempt to alter the yellow Air Bag wiring harness.

On vehicles with Air Bags, the headlight and wiper switches are integral parts of the combination switch and Air Bag cable reel assembly.

  1. Disconnect the negative then positive battery cables.
  2.  
  3. Disarm the Air Bag system.
  4.  
  5. Remove the steering wheel.
  6.  
  7. Remove the lower dashboard cover and disconnect the dimmer switch.
  8.  
  9. Remove the upper and lower steering column covers. Be careful with the wiring harness that runs through the lower cover; it contains the Air Bag wiring.
  10.  
  11. Unscrew and remove the combination switch and Air Bag cable reel assembly.
  12.  

The combination switch and cable reel assembly cannot be disassembled. They are serviced and replaced as one complete assembly.

To install:
  1. Install the combination switch and cable reel assembly onto the steering column shaft.
  2.  
  3. Reconnect the switch wiring harnesses.
  4.  
  5. Install the lower steering column cover, making sure that the Air Bag wiring is routed correctly and not pinched. Install the upper steering column cover.
  6.  
  7. Reconnect the dimmer switch and install the dashboard lower cover.
  8.  
  9. Check the alignment of the Air Bag cable reel.
    1. Turn the cable reel clockwise to its fully locked position. Don't turn the cable reel past the point at which you begin to feel resistance to its rotation.
    2.  
    3. Turn the cable reel about three turns in the opposite direction until the pointer on the cable reel is aligned with the neutral mark.
    4.  

  10.  
  11. Install the steering wheel and tighten the nut to 25 ft. lbs. (34 Nm).
  12.  
  13. Reconnect the positive and negative battery cables.
  14.  
  15. Turn the ignition to the ON position, but don't start the engine. The AIR BAG warning light should turn on and flash on and off for seven seconds, and then turn off. This light sequence indicates that the Air Bag system is functioning normally. If the AIR BAG light doesn't come on, or stays on longer than seven seconds, the system must be diagnosed.
  16.  
  17. Check the operation of the combination switch and horn controls.
  18.  

Hombre

See Figure 3



Click image to see an enlarged view

Fig. Fig. 3: Turn signal switch-Hombre


CAUTION
The Air Bag system must be disabled before the steering wheel and combination switch are removed. Failure to disable the system may result in repairs and possible personal injury. Do not damage, cut, or attempt to alter the yellow Air Bag wiring harness.

  1. Disconnect the negative battery cable.
  2.  
  3. Disarm the Air Bag system, if equipped.
  4.  
  5. Matchmark and remove the steering wheel. Refer to the procedure in this section for details.
  6.  
  7. Remove the shaft lock cover.
  8.  
  9. Using a shaft lock compressor tool, push downward on the shaft lock assembly until the snapring is exposed.
  10.  
  11. Remove the shaft lock retaining snapring, then carefully release the tool and remove the shaft lock from the column.
  12.  
  13. Remove the turn signal canceling cam assembly.
  14.  
  15. For standard columns, remove the upper bearing spring and thrust washer.
  16.  
  17. For tilt columns, remove the upper bearing spring, inner race seat and inner race.
  18.  
  19. Move the turn signal lever upward to the Right Turn'' position.
  20.  
  21. Remove the access cap and disengage the multi-function lever harness connector, then grasp the lever and pull it from the column.
  22.  
  23. Loosen and remove the hazard knob retaining screw, then remove the screw, button, spring and knob.
  24.  
  25. Remove the screw and the switch actuator arm.
  26.  
  27. Remove the turn signal switch retaining screws, then pull the switch forward and allow it to hang from the wires. If the switch is only being removed for access to other components, this may be sufficient.
  28.  
  29. If the switch is being completely removed, disengage the wiring at the base of the column. Attach a length of mechanic's wire to the switch harness connector, then pull the harness through the column, leaving the mechanic's wire in place for installation purposes.
  30.  

On some vehicles access to the connector may be difficult. If necessary, remove the column support bracket assembly and properly support the column, and/or remove the wiring protectors.

  1. Remove the switch and harness from the vehicle.
  2.  

To install:
  1. Install the switch and harness to the vehicle. If the switch was completely removed, use the length of mechanic's wire to pull the switch harness through the column, then engage the connector.
  2.  

If the column support bracket or wiring protectors were removed, install them before proceeding.

  1. Position the switch in the column and secure using the retaining screws. Tighten the screws to 30 inch lbs. (3 Nm).
  2.  
  3. Install the switch actuator arm and retaining screw, then tighten the screw to 20 inch lbs. (2 Nm).
  4.  
  5. Install the hazard knob assembly, then install the multi-function lever.
  6.  
  7. Install the thrust washer and upper bearing spring (standard columns) or the inner race, upper bearing race seat and upper bearing spring (tilt columns), as applicable.
  8.  
  9. Lubricate the turn signal canceling cam using a suitable synthetic grease (usually included in the service kit), then install the cam assembly.
  10.  
  11. Position the shaft lock and a new snapring, then use the lock compressor to hold the lock down while you seat the new snapring. Make sure the ring is firmly seated in the groove, then carefully release the tool.
  12.  
  13. Install the shaft lock cover.
  14.  
  15. Align and install the steering wheel.
  16.  
  17. Make sure the ignition is OFF , then connect the negative battery cable.
  18.  
  19. Check and make sure the Air Bag functions properly.
  20.  

 
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