Rectifier Test; Alternator Brush Inspection; Rotor Slip Ring Test - Honda Civic 2002-2003 Service Manual

Charging System
Alternator Overhaul (cont'd)
Rectifier Test
16. Check for continuity in each direction, between the
B terminal and P terminals, and between the E
terminal and P terminals of each diode pair.
All diodes should have continuity in only one
direction. Because the rectifier diodes are designed
to allow current to pass in one direction, and the
rectifier is made up of eight diodes Ifour pairs), you
must test each diode in both directions for
continuity with an ohmmeter that has diode
checking capability: a total of 16 checks.
p,
4-34
If any diode is faulty, replace the rectifier
assembly. IDiodes are not available separately.1
If all the diodes are OK, go to step 17.
- B
..•
/
E
BP',
, ,
,-l
I
p,
+---+--~l
p,
p,
P.
E
p.
p,
Alternator Brush Inspection
17. Measure the length of both brushes IAI with a
vernier caliper IBI.
If either brush is shorter than the service limit,
replace the brush assembly.
If brush length is OK, go to step 18.
Alternator Brush Length:
Standard INewl: 10.5 mm 10.41 in. I
Service Limit: 1.5 mm 10.06 in. I
B
A
Rotor Slip Ring Test
18. Check that there is continuity between the slip rings
IAI.
If there is continuity, go to step 19.
If there is no continuity, replace the alternator.
C
t
A
19. Check that there is no continuity between each slip
ring and the rotor IBI and the rotor shaft ICI.
If there is no continuity, go to step 20.
If there is continuity, replace the alternator.
•
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