Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Celica 1988-1989.1993-1994.2000 Approved Toyota Celica 1993 ALTERNAT

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                                                         ALTERNATOR & REGULATOR

                                                                      1993 Toyota Celica




                1993 ELECTRICAL
                Toyota Alternators & Regulators

                Celica

WARNING: Before performing service procedures on vehicle, disconnect
         negative battery cable. Wait at least one minute after
         disconnecting negative battery cable to avoid accidental air
         bag deployment on models so equipped.

        DESCRIPTION
         The alternator is a small, high RPM, high performance type
with an internal Integrated Circuit (IC) voltage regulator which
controls charging system voltage. A transistor inside IC regulator
controls alternator voltage output to maintain a constant voltage.
Charging system voltage is maintained within an operating range of 13.
2-15.0 volts. See ALTERNATOR REGULATED OUTPUT SPECIFICATIONS table for
specific model.
         When ignition is turned on, battery voltage flows from
alternator terminal "L" through IC regulator to terminal "E" and to
ground, causing discharge warning light to come on. When engine
starts, alternator RPM increases, which increases alternator voltage
output. When alternator output voltage is greater than battery
voltage, voltage to recharge battery flows from terminal "B". At the
same time voltage at terminal "L" increases and the potential
difference between battery and terminal "L" ceases, causing discharge
warning light to go off.

        TROUBLE SHOOTING
NOTE:           See TROUBLE SHOOTING - BASIC PROCEDURES article in
                GENERAL INFORMATION section.

         Check all fuses, fusible links, ignition switch, and
appropriate relays (if equipped). Check alternator output test. See
NO-LOAD TEST under ON-VEHICLE TESTING.

        ADJUSTMENTS
NOTE:           New Belt refers to a belt which has been used 5 minutes or
                less on a running engine. Used Belt refers to a belt which
                has been used more than 5 minutes on a running engine. After
                installing new belt(s), run engine for at least 5 minutes
                and recheck tension.

        BELT TENSION
BELT TENSION SPECIFICATIONS TABLE (1)
 

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