CHARGING SYSTEM
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999 Page 4C-23
3. Meter should indicate a high or infinite resistance (no meter movement) when
connected one way and a low reading when connected the other. If both readings are
high or infinite, rectifier is open. If both readings are low, rectifier is shorted.
4. Repeat Steps 1 through 3 for two other rectifiers in heat sink.
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b
a
c
a-Stud
b-Rectifier Terminal
c-Repeat Test Between These Terminals And Stud
5. Replace assembly if any one of the rectifiers is shorted or open.
6. Connect one lead of an ohmmeter (set on R x1) to the common side of the diode and
the other lead to the other side, of one of the three diodes.
72148
a
b
a-Common Side Of Diode Circuit Board
b-Repeat Test For Two Diodes
7. Reverse leads and again note reading.
8. Meter should indicate a high or infinite resistance (no meter movement) when con-
nected one way and a low reading when connected the other. If both readings are high
or infinite, diode is open. If both readings are low, diode is shorted.
9. Repeat Steps 6 through 8 for the other two diodes.
10. Replace rectifier assembly if any one of the diodes is shorted or open.
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