Toyota Tercel 1984-1994 Repair Guide




See Figures 1 through 5

Except IC Regulator

Some 1984-1986 models are equipped with a voltage regulator that is not integral with the alternator. It is located on the left fender apron of the engine compartment. If you are uncertain as to which regulator is in your car, a label on the alternator will specify if it has an internal (IC) regulator.

  1. Unplug the electrical connector.
  3. Remove the regulator attaching screws and remove it from the vehicle.
  5. Installation is the reverse of removal.

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Fig. Fig. 1: Removing the end frame attaching nuts

IC Regulator

The voltage regulator is contained within the alternator. It is called an Integrated Circuit (IC) type. The alternator must be removed to replace the regulator.

  1. Disconnect the negative battery cable.
  3. Remove the alternator following the procedures and cautions located earlier in this section.
  5. Support the alternator on a workbench, pulley end down, but do not let it rest on the pulley itself.
  7. On the side of the alternator, remove the plastic terminal insulator or dust cover, if applicable.
  9. Remove the three nuts and remove the end cover.
  11. Remove the five screws and carefully remove the brush holder and then the IC regulator. Be careful to keep track of various small parts (washers, etc)-they will be needed during reassembly.

To install:
  1. Place the cover over the brush holder. Install the regulator and the brush holder onto the alternator and secure them with the five screws. Make sure the brush holder's cover doesn't slip to one side during installation.

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Fig. Fig. 2: The brush holder has two attaching screws

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Fig. Fig. 3: Remove the three attaching screws and the IC regulator