mxu 400 Manuel atelier : Page 99

           2. Select the OHMS position on the tester and con-         RESISTANCE (Charging Coil)
    nect the red tester lead to the lavender/red wire;
    then move the gear shift lever to the R (reverse)                         CAUTION
    position. The meter must read less than 1 ohm.
 3. Move the red tester lead and shift lever in turn to      Always disconnect the battery when performing
    the light green/red wire and N (neutral) position,       resistance tests to avoid damaging the multimeter.
    white/black wire and H (high) position, and
    white/red wire and L (low) position. The meter           1. Set the meter selector to OHMS position.
    must read less then 1 ohm in all positions. If not,      2. Test between the three yellow wires for a total of
    the gear shift linkage must be adjusted (see Sec-           three tests.
    tion 2) or the switch must be replaced.                  3. The meter reading must be within specification.
                                                            RESISTANCE (Trigger Coil)
               Stator Coil
                                                                               CAUTION
                                                             Always disconnect the battery when performing
VOLTAGE                                                      resistance tests to avoid damaging the multimeter.
(AC Generator - Regulated Output)
                                                             1. Disconnect the gray four-pin connector on the right
 1. Set the meter selector to the DC Voltage position.          side of the engine just above the starter motor.
 2. Connect the red tester lead to the positive battery      2. Set the meter selector to the OHMS position.
    post; then connect the black tester lead to the nega-    3. Connect the red tester lead to the green/white
    tive battery post.                                          wire; then connect the black tester lead to the
 3. With the engine running at a constant 3000 RPM              blue/yellow wire. The meter reading must be
    (with the headlights on), the meter must show 14-           within specification.
    15.5 DC volts.
                                                            PEAK VOLTAGE
                   CAUTION                                    NOTE: All of the peak voltage tests should be
                                                            made using the Fluke Model 73 Multimeter with
 Do not run the engine at high RPM for more than
 10 seconds.
                                                            Peak Voltage Reading Adapter. If any other type of
                                                            tester is used, readings may vary due to internal
  NOTE: If voltage is lower than specified, test            circuitry.
charging coil - no load.
                                                              NOTE: The battery must be at full charge for
VOLTAGE (Charging Coil - No                                 these tests.
Load)
                                                            Trigger Coil
The connector is the y e l l o w three-pin one on the
right side of the engine just above the starter motor.       1. Set the meter selector to the DC Voltage position.
                                                             2. Connect the red tester lead to the green/white
  NOTE: Test the engine-side of the connector.                  wire; then connect the black tester lead to the
                                                                blue/yellow wire.
 1. Set the meter selector to the AC Voltage position.       3. Crank the engine over using the electric starter.
 2. Test between the three yellow wires for a total of       4. The meter reading must be within specification.
    three tests.
 3. With the engine running at the specified RPM, all
    wire tests must show 60 AC volts.
                                                                        Starter Relay
                    CAUTION
Do not run the engine at high RPM for more than 10           1. Remove the seat; then using the multimeter set to
seconds.                                                        the DC Voltage position, check the relay as fol-
                                                                lows.
   NOTE: If both charging coil tests failed, check           2. Connect the red tester lead to the positive battery
all connections, etc., and test again. If no voltage is         terminal; then connect the black tester lead to the
present, replace the stator assembly.                           starter cable connection on the starter relay. The
                                                                meter must show battery voltage.



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